MEDSI2016 - List of Keywords (ion)

Paper	Title	Other Keywords	Page
MOPE01	Stabilization Methods for Force Actuators and Flexure Hinges	ECR, experiment, optics, site	1
	C. Colldelram, J. Nicolás, C. Ruget ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	In the framework of the design of an adaptive optics for x-ray mirrors a stabilization system* for force actuators and flexure hinges have been conceived. This corrector allows to deform the mirror surface at nanometre level but for this purpose it requires resolutions better than 0.02, by using ultra-low constant springs, and to preserve the introduced deformation it is needed to be stable at the same level. The corrector needs to be insensitive when dismantling and remounting the mirror. In the other hand in order to support the corrector its structure is attached to the bender frame and the spring force is transmitted through a level arm by means a bearing articulation. This introduces a small friction but it is still preferably to eliminate it. A new method based -k spring-like constant principle is proposed. Based on this technique it is possible to stabilize the force exerted on the mirror below 0,02N for an error range more than 1 mm. In addition applying the principle to a flexure it allows to compensate it in an angular range in within the torque variation tend to be null, below 0,005 Nm, thus becoming a short range, frictionless and zero torque articulation. * Patent Registered
	Poster MOPE01 [1.046 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE01
About •	paper received ※ 15 September 2016 paper accepted ※ 08 May 2017 issue date ※ 22 June 2017
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MOPE02	Studies on Flow-Induced Vibrations for the New High-Dynamics DCM for Sirius	experiment, controls, acceleration, synchrotron	8
	R.M. Caliari, O.R. Bagnato, F.R. Francisco, R.R. Geraldes, R.L. Parise, M. Saveri Silva, D.O. Tavares, L.,Jr. de Souza LNLS, Campinas, Brazil T.A.M. Ruijl MI-Partners, Eindhoven, The Netherlands
	The monochromator is known to be one of the most critical optical elements of a synchrotron beamline, since it directly affects the beam quality with respect to energy and position. Naturally, the new 4th generation machines, with their small emittances, start to bring about higher stability performance requirements, in spite of factors as high power loads, power load variation, and vibration sources. A new high-dynamics DCM (Double Crystal Monochromator) is under development at the Brazilian Light Source for the Sirius EMA beamline (Extreme Condition X-ray Methods of Analysis). The disturbances induced by the coolant flows are known to be among the most detrimental influences to a DCM performance, however, quantitative force numbers involved in such disturbances are not commonly investigated. According to the novel dynamic concept, these forces should be predictably translated into stability performance. Therefore, experimental setups that allow the indirect measurement of such forces in conditions close to those of operation were designed. The results comparing different indirect cooling profiles and manufacturing processes (brazing and additive manufacturing) are shown.
	Poster MOPE02 [3.064 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE02
About •	paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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MOPE05	Mechanical Design of Secondary Source Slits for Hard X-ray Beamlines at Taiwan Photon Source	controls, scattering, site, photon	12
	H.Y. Yan, C.H. Chang, S.H. Chang, C.Y. Chen, C.Y. Huang, J.M. Lin, D.G. Liu, D.-J. Wang NSRRC, Hsinchu, Taiwan
	The secondary source slits have been developed for specific hard X-ray beam-lines at Taiwan Photon Source. Especially for Coherent X-ray Scattering and X-ray Nanoprobe beam-lines, severe specifications of the slits are more necessary to define proper beam sizes in horizontal and vertical directions at sample. The opening size of each pair of slits assembled orthogonally is usually needed to range within several microns, so the UHV-compatible piezo-driven stages with closed-loop system were adopted for the purposes of fine adjustment, precise positional accuracy and repeatability. To reduce X-ray scattering effect, the rectangular single-crystal film was bonded on the edge of the slit blade. The machined rotary weak-link structure and piezo-driven actuators were used to slightly adjust parallelism of each pair of the blades with the method of single-slit diffraction. To enhance structural and thermal stability, the granite plinths with specified shape were designed and the precise temperature controlling system will be set up recently. The overall design, mechanical specifications and procedure of testing for secondary source slits will be introduced in this paper.
	Poster MOPE05 [0.795 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE05
About •	paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017
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MOPE07	Ground Motions Measurements for Synchrotron	ground-motion, experiment, synchrotron, operation	15
	D.T. Ziemianski CUT, Kraków, Poland M.P. Nowak Solaris, Kraków, Poland
	For more than two decades, ground vibration measurements were made by different teams for feasibility studies of linear accelerators. Recent measurements were performed in the SPS tunnel and at different CERN sites on the surface. The devices to measure vibrations of magnitude ranging in nanometres, the analysis techniques and the results are critically discussed and compared with the former measurements. The implication of the measured integrated R.M.S. displacements for the Crab cavities cavern is mentioned. The equipment used in this study consists of 2 state-of-the-art Guralp broadband triaxial seismometers. Models CMG-T60-0004 performed measurements in three directions V, N/S and E/W. The first analysis was to evaluate the power spectral density for each direction of sensors and event. The power spectral density is calculated from the auto power spectrum. The power spectral density shows a typical curve for the geophones with theμseismic peak between 0.2 and 0.4 [Hz]. It is import ant to point that ground vibrations should not be ignored in planning accelerator facility. Actually it is one of the limiting factor in the optimization of future accelerators.
	Poster MOPE07 [4.968 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE07
About •	paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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MOPE08	The LNLS Metrology Building	controls, SRF, instrumentation, synchrotron	17
	H.G.P. de Oliveira, C. Esper Neto, P.T. Fonseca, R.R. Geraldes, B.C. Meyer, M.A. Pereira, G.L.M.P. Rodrigues, L. Sanfelici, L.G. da Silva LNLS, Campinas, Brazil L. Buccianti, M.H.A. Costa Biotec Controle Ambiental, São José dos Campos, SP, Brazil C. Prudente Prudente Engenharia Ltda., Uberlândia, Minas Gerais, Brazil
	Funding: Brazilian Ministry of Science, Technology, Innovation and Communication. The increasing demands of instrumentation projects for SIRIUS require more sensitive equipment to be devel-oped and characterized in theμand nanometer scale. To achieve this level of precision it is necessary to work within a controlled environment, minimizing instabilities and disturbance effects such as temperature variation and vibrations. Based on metrology labs as those at BESSY, ESRF, DLS and others, a new facility is currently under final construction stage at the LNLS, which will be dedi-cated to high precision optical and mechanical metrolo-gies. This work describes in detail the project of the new LNLS Metrology Building.
	Poster MOPE08 [2.829 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE08
About •	paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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MOPE09	Preliminary Design and Test of Damping Mechanism for Reducing Vibration of TPS SR Vacuum Chamber	damping, vacuum, site, experiment	20
	K.H. Hsu, M.L. Chen, C.M. Cheng, H.C. Ho, D.-G. Huang, C.K. Kuan, W.Y. Lai, C.J. Lin, S.Y. Perng, T.C. Tseng, H.S. Wang NSRRC, Hsinchu, Taiwan
	Since flow-induced vibration of vacuum chamber effects of the stability of the electron beam storage ring in Taiwan Photon Source (TPS), a damping mechanism was designed and installed to reduce vibration. The damping mechanism is composed of a clamper of vacuum chamber, a fixed fixture on the girder and a sandwiched stain-less steel support with damping materials inside. Different kinds of materials were applied in the damping mechanism for vacuum chamber. The vibration of vacuum chamber were obtained and compared. The design and vibration measurement results of damping mechanism for vacuum chamber are presented in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE09
About •	paper received ※ 11 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017
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MOPE10	Dynamic Analysis and Measurement of Ground Motion for the Solaris - National Synchrotron Radiation Centre in Cracow	experiment, ground-motion, synchrotron-radiation, synchrotron	24
	D.T. Ziemianski CUT, Kraków, Poland M.P. Nowak Solaris National Synchrotron Radiation Centre, Jagiellonian University, Kraków, Poland
	The paper presents the results of the ground motion measurements and dynamic analysis performed in the Polish synchrotron radiation facility Solaris. The analysis has been carried out within the framework of the installation experimental lines inside Solaris building and accelerator tunnel. The equipment used in this study consists of 4 seismic, high sensitivity, ceramic flexural ICP accelerometer Models 393B31 (PCB), which performed measurements in one vertical directions. The first analysis was to evaluate the power spectral density for each sensors and event. The power spectral density is calculated from the auto power spectrum. The power spectral density shows a typical curve with theμseismic peak between 0.2 and 0.4 Hz. It is important to point that ground vibrations should not be ignored in planning accelerator facility. All over the measurement, the RMS integrated level in the vertical direction at 1 Hz were calculated and presented in paper.
	Poster MOPE10 [2.916 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE10
About •	paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017
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MOPE11	Preliminary Active Vibration Elimination Study of the TPS Girder System	storage-ring, synchrotron, ion-source, alignment	26
	T.C. Tseng, M.L. Chen, H.C. Ho, K.H. Hsu, D.-G. Huang, C.K. Kuan, W.Y. Lai, C.J. Lin, S.Y. Perng, C.W. Tsai, H.S. Wang NSRRC, Hsinchu, Taiwan
	The Taiwan Photon Source (TPS) had delivered the first synchrotron light on the last day of 2014 and is to open to the users from September 2016 after one and half years of commissioning and insertion devices installation. However, the instability is still an obvious problem to the beam quality and the deviation amplification factor of the magnets to the electron beam plays an important contribution role. Since the magnets are firmly installed on the girders and the contribution is mainly transferred from the girder vibration. This study tries to eliminate the obvious vibration frequencies amplitude exerted on the girder from outside sources such as the utility system with the PZT actuators installed on the locking wedges between girder and pedestals. By the amplitude and inverse phase searching iteration, some vibration frequency peaks in phase domain can be eliminated and the instability is also reduced.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE11
About •	paper received ※ 11 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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MOPE13	The 20m/s CERN Fast Vacuum Wire Scanner Conceptual Design and Implementation	vacuum, controls, feedback, ISOL	29
	J. Herranz Proactive Research and Development, Barcelona, Spain W. Andreazza, N. Chritin, B. Dehning, J. Emery, D. Gudkov, P. Magagnin, S. Samuelsson, J.L. Sirvent, R. Veness CERN, Geneva, Switzerland A. Barjau Universitat Politécnica de Catalunya, Barcelona, Spain
	In the next years the luminosity of the LHC will be significantly increased. Therefore a much higher accuracy of beam profile measurement than actually achievable by the current wire scanner is required. The new performance demands a wire travelling speed up to 20 m/s and a position measurement accuracy of the order of 1 µm. In order to minimize the error source of the wire position measurement, a challenging concept has been developed which consists of the placement of the motor rotor and the angular position sensor in vacuum. The implementation of this new concept requires the use of a magnetic brake, hybrid vacuum bearings, the design and production of very thin (<0.5mm) wall vacuum chamber regions and the production of titanium components by 3D additive technologies. The implementation of this new concept has required different optimization processes as the structural optimization under dynamic load of the most critical rotating elements or the optimization of the control system and the motion pattern. This contribution gives an overview of the new device design and shows the different technical solution applied to develop the new concept in a successful way.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE13
About •	paper received ※ 10 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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MOPE15	Cam Mover Alignment System Positioning with Wire Position Sensor Feedback for CLIC	target, alignment, controls, electron	32
	J. Kemppinen, Z.S. Kostka, H. Mainaud Durand CERN, Geneva, Switzerland J. Kemppinen ETH, Zurich, Switzerland
	Compact Linear Collider (CLIC) is a study of an electron-positron collider with nominal energy of 3 TeV and luminosity of 2·10³⁴ cm^-2·s^-1. The luminosity goal leads to stringent alignment requirements for single quadrupole magnets. Vertical and lateral offset deviations with regards to a given orbit reference in both ends of a quadrupole shall be below 1 µm and quadrupole roll deviation shall be below 100 µrad. Translation in the direction of particle beam is not controlled but mechanically locked. A parallel kinematic platform based on cam movers was chosen as system for detailed studies. Earlier studies have shown that cam movers can reach the CLIC requirements through an iterative process. The paper presents new modular off-the-shelf control electronics and software including three optional positioning algorithms based on iterations as well as a more advanced algorithm which can reach target position in one movement. The advanced algorithm reads wire position sensors (WPS), calculates quadrupole orientation based on the readings and updates the remaining trajectory during motion. All of the optional positioning methods reach the CLIC positioning requirements within minutes.
	Poster MOPE15 [0.425 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE15
About •	paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017
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MOPE16	Development of the RIXS Manipulator	vacuum, scattering, operation	35
	H. Jöhri, C. Hess, L. Nue, L. Patthey, T. Schmitt PSI, Villigen PSI, Switzerland
	The RIXS Manipulator (RIXS = Resonant Inelastic X-ray Scattering) is a further development of the Carving Manipulator. The carving manipulator has six independent degree of freedom. (Three translations and three rotations). All three rotations are exactly in the middle of the sample surface. The head of the manipulator is in UHV and the sample can be cooled down to 10K. For the RIXS manipulator there is a new requirement to have a field of view from 0-180°. There are mainly two parts in the carving manipulator that set the probe in the shadow of the beam at small angles. - A bellow - The bearings To solve these problems we shifted the bellow behind the pivot point. This give some strange movements of the bellows and we had to analyse this in a separate test installation. For the bearings, we developed a goniometer bearing with ceramic bearing shells. Meanwhile the RIXS manipulator is implemented and in routine operation
	Poster MOPE16 [1.357 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE16
About •	paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017
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MOPE17	OCTOGLIDE - Table Positioning Device for Diffraction Applications	controls, software, GUI, synchrotron	38
	G. Olea, N. Huber HUBER Diffraktiontechnik GmbH&Co.KG, Rimsting, Germany
	A new Table Positioning Device(TPD) for high precision and heavy load manipulations has been developed. Conceived as an alternative to the precision hexapods it fulfils the gap of sample (and/or, instruments) positioning in small (height) available working spaces of synchrotron Diffractometers (Dm). The concept is based on a Redundant Parallel Kinematic Structure (Rd-PKS) with four (4) legs having 2 dof active joints (actuators). In this Proof of Functionality (PoF) step, a stacked solution has been adopted for actuators design using the existent XY translation Positioning Units (Pu). The symmetrically modular 6-4(PP)PS precision mechanism - OCTOGLIDE(OG) having eight (8) gliding actuators (P) is implying also a pair of wedges - Elevation (El) and socket/ball - Guiding (G) Pu, as passive joints (P and S) forming one of the Positioning modules (Pm). Spatial positions can be reached without any singularities and planar motions along/around X or Y axis are performed very intuitively with some of the actuators (decoupled) motion. The first tests of the prototype are revealing both, high accuracy (straightness, flatness, etc) and stiffness capabilities. * Merlet JP, Parallel robots, Springer, 2006
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE17
About •	paper received ※ 09 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017
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MOPE18	Real-Time Motor Control System for Beamlines	controls, FPGA, hardware, real-time	41
	C.F. Chang NSRRC, Hsinchu, Taiwan
	To improve the stability and accuracy of motor control system for beamlines, the beamlines with motor adjustment mechanism collocate with the real-time firmware motor control system through the high-definition motor mechanism. Because the real-time motor control system does not need to be connected with the computer for a long time, it improves the speed, stability and accuracy of closed loop operation and thus promotes the controlling ability of motor. As a result, the real-time motor control system will improve the stability and accuracy of the entire motor control system with beamlines.
	Poster MOPE18 [2.797 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE18
About •	paper received ※ 09 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017
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MOPE19	Mechatronics Concepts for the New High-Dynamics DCM for Sirius	controls, synchrotron, alignment, resonance	44
	R.R. Geraldes, R.M. Caliari, G.B.Z.L. Moreno LNLS, Campinas, Brazil M.J.C. Ronde, T.A.M. Ruijl, R.M. Schneider MI-Partners, Eindhoven, The Netherlands
	Funding: Brazilian Ministry of Science, Technology, Innovation and Communication The monochromator is known to be one of the most critical optical elements of a synchrotron beamline. The new 4th generation machines, with emittances in the range of order of 100 pm rad, require even higher stability performances, in spite of the still conflicting factors such as high power loads, power load variation, and vibration sources. A new high-dynamics DCM is under development at LNLS for the future X-ray undulator and superbend beamlines of Sirius. Aiming at inter-crystal stability of a few tens of nrad and considering the limitations of the current DCM implementations, several aspects of DCM engineering are being revisited. The system concept is chosen such that a control bandwidth in the order of 200 to 300 Hz can be achieved. This requires well-designed system dynamics, which can be realized by applying a fundamentally different architecture than that used in common DCM designs, based on principles used in ultra-precision systems for semiconductor manufacturing. As a result, known disturbances can be attenuated or suppressed, and internally excited modes can be effectively handled. The mechatronics concepts and analyses, including the metrological details, are shown.
	Poster MOPE19 [5.423 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE19
About •	paper received ※ 11 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017
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MOPE20	Ultra Stiffness And Ultra Low Wawing LM Guide	GUI, experiment, ECR	48
	M. Miret THK GmbH Sucursal en España, Badalona, Spain
	The abstract porpoise is explain how is providing the LM Guide for high performance machine by realizing the waving of Nano-level and achieves super-low waving and ultra-high rigidity by adopting 8 rows of raceways in the LM Guide. These models adopt (1) 8 rows of raceways, (2) small-diameter balls and (3) super-long blocks, in order to realize super-low waving and ultra-high rigidity that surpass the conventional LM Guide. With this approach, the number of effective balls is substantially increased, and the amplitude of the rolling element in motion is minimized. The new models realize super-low waving comparable to hydrostatic guides. In addition, the deformation of the ball is minimized to achieve ultra-high rigidity that surpasses even roller guides. Primary applications Super-precision processing machines/High-precision machining centre/Lathe/Surface grinder/Semiconductor manufacturing equipment/FPD manufacturing machines/High-performance measuring machines. [Waving evaluation] The waving values are approximately 1/10 of that (100 to 300 nm) of conventional ordinary LM Guides.
	Poster MOPE20 [1.600 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE20
About •	paper received ※ 07 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017
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MOPE22	Mechanical Design of the MID Split-and-Delay Line at the European XFEL	FEL, alignment, controls, laser	50
	B. Friedrich, S. Eisebitt, T. Noll MBI, Berlin, Germany S. Eisebitt, B. Friedrich Technische Universität Berlin, Berlin, Germany W. Lu, T. Roth European XFEL, Schenefeld, Germany A. Madsen XFEL. EU, Hamburg, Germany
	A new split-and-delay line (SDL) is under development for the Materials Imaging and Dynamics (MID) end station at the European XFEL.* The device utilises Bragg reflection to provide pairs of X-ray pulses with an energy of (5 - 10) keV and a continuously tunable time delay of (-10 - 800) ps - thus allowing zero-crossing of the time delay. The mechanical concept features separate positioning stages for each optical element. Those are based on a serial combination of coarse motion axes and a fine alignment 6 DoF Cartesian parallel kinematics*. That allows to meet the contradictory demands of a fast long-range travel of up to 1000 mm and in the same time a precise alignment with a resolution in the nanometer range. Multiple laser interferometers monitor the position of the optical elements and allow an active control of their alignment. All optical elements and mechanics will be installed inside an UHV chamber, including the interferometer and about 100 stepper motors. With this paper we present the mechanical design for the SDL. It will additionally show the design of a prototype of a positioning stage which allows extensive testing of the implemented concepts and techniques. A. Madsen et al., Technical Design Report: Scientific Instrument MID, 2013. ** T. Noll et al., Parallel kinematics for nanoscale Cartesian motions, Precision Engineering, vol. 33, no. 3, 2009.
	Poster MOPE22 [4.691 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE22
About •	paper received ※ 11 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017
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MOPE23	An Assembling Calibration Method of XBPM Diamond Blades in TPS	survey, alignment, network, photon	54
	H.C. Ho, M.L. Chen, K.H. Hsu, D.-G. Huang, C.K. Kuan, W.Y. Lai, C.J. Lin, S.Y. Perng, T.C. Tseng, H.S. Wang NSRRC, Hsinchu, Taiwan
	Diamond blade type X-ray Beam Position Monitors (XBPM) were adopted to monitor photon position at the beamline front-end in Taiwan Photon Source (TPS). Due to the thin thickness (125um) and fragile characteristic, the assembling precision of the diamond blades are hard to measure and influence the accuracy of monitor. A non-contact method was thus developed by using a led laser with telecentric objective lens and a CCD-array to calibrate the diamond blades assembling configuration within micrometer accuracy. According to the measurement results, XBPM can be correlated to four fiducial points for survey network. This paper describes this method and calibrating results in detail.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE23
About •	paper received ※ 10 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017
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MOPE24	The Precision Adjustment Holder for Montel Mirrors	focusing, optics, alignment, photon	57
	B.Y. Chen, S.H. Chang, H.Y. Chen, C.Y. Lee, B.H. Lin, M.T. Tang, S.C. Tseng, J.X. Wu, G.C. Yin NSRRC, Hsinchu, Taiwan M. Hong National Taiwan University, Taipei, Taiwan J.R. Kwo NTHU, Hsinchu, Taiwan
	The focusing of X-ray nanoprobe at TPS relay upon the special designed Montel mirrors and its adjustment holder. The holder includes two major parts: (1) fundamental-position alignment part and (2) relative-position adjustment part. The fundamental-position alignment part has the ability to adjust the two mirrors together in 6 DOF., such as X, Y, Z, pitch, roll, and yaw. These translation stages have several-tens mm travel range and nm resolution, while the rotational stages have 40 mrad azimuthal angular range and 0.1~0.01 µrad resolution. The relative-position adjustment part can further adjust the two mirrors to minimize the focal spot. During the pre-alignment process, one of the mirrors can be manual adjusted by micrometer heads in three translation directions with several mm travel range and micro-meters resolution. These micrometer heads also provide this mirror three rotational degree of freedoms with sub-mrad resolution. For the further alignment in vacuum, the additional four piezo-motor actuators can precisely adjust the other Montel mirror in the Y and Z direction with several nm resolution, and its pitch and roll with 1 urad and 0.05 urad resolution, respectively.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE24
About •	paper received ※ 14 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017
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MOPE26	Front End Photon Shutter Water Leak to Vacuum at the Canadian Light Source	photon, operation, vacuum, cavity	60
	G.R. Henneberg, M.J.P. Adam, G.R. Barkway CLS, Saskatoon, Saskatchewan, Canada
	In early July 2016 CLS experienced a water to vacuum leak in the storage ring. The source of the leak was a pin hole in the absorbing surface of Photon Shutter 1 in the front end of the HXMA Beamline. The leak was caused by high velocity cooling water erosion of the internal cooling water path of the copper photon shutter block. The poster will present the root cause analysis of the leak, implications for other identical photon shutters and currently in service and the current remedial action plan.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE26
About •	paper received ※ 11 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017
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MOPE27	The Influences of Material Properties to Micro Damages on Vacuum Chamber CF Flanges	vacuum, FEL, simulation, diagnostics	63
	S. Vilcins, M. Holz, M. Lemke, D. Nölle, Ch. Wiebers DESY, Hamburg, Germany
	The European-XFEL, a 3.3 km long X-Ray laser facility, powered by a 17.5 GeV superconducting linear accelerator, is located at DESY in Hamburg [1]. For the diagnostics ultra-high vacuum components with high mechanical precision and strict requirements on particle cleanliness had to be developed, designed and produced. For the screen system of the facility, enabling to observe the size and shape of the electron beam, massive vessels, precisely milled out of stainless steel blocks 1.4435 (316L) have been produced. For these chambers all flange-connections are milled into these blocks. This paper will report onμdamages in these integrated knife edges and will present simulations of the damage mechanisms. It will also describe the influences of material properties of two different stainless steel brands, effects on the ¿knife edge¿ due to the penetration into the gaskets as well as the non-elastic deformation of the sealing area. The dependence of tightening forces under special conditions, like the very clean conditions in particle free applications due to the non-lubricated conditions will be reported. A ¿cooking recipe¿ to avoid suchμdamages will be given.
	Poster MOPE27 [0.187 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE27
About •	paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017
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MOPE28	Vacuum System of SESAME Storage Ring	vacuum, storage-ring, simulation, injection	71
	M.A. Al-Najdawi, H. Al-Mohammad, E. Huttel, F. Makahleh, M.M. Shehab SESAME, Allan, Jordan
	Funding: N/A SESAME* is a third-generation synchrotron light source under construction near Amman (Jordan). The storage ring has 16 Dipole arc chambers, 8 short and 8 long straight chambers. The general layout and detailed design of the vacuum chambers, crotch absorbers, RF bellows, injection and RF sections will be presented in this contribution, also the testing of the chambers prototype, bake out process and final installation. * Synchrotron-light for Experimental Science and Applications in the Middle East
	Poster MOPE28 [2.696 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE28
About •	paper received ※ 10 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017
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MOPE29	Vacuum System of HLS-II Storage Ring	storage-ring, vacuum, synchrotron, MMI	74
	Y. Wang, L. Fan, Y.Z. Hong, X.T. Pei, W. Wei, B. Zhang USTC/NSRL, Hefei, Anhui, People’s Republic of China
	Hefei Light Source (HLS) has been operated for more than twenty-five years. From 2010 to 2014, the upgrading project of HLS has been carried out and the new machine is called HLS-II. The main improvement include: the emittance is reduced to 40 nm·rad, 3 new insertion devices (2 IVU and 1 EPU undulators) are added and the injection energy increases to 800 MeV. The typical life time is 300 mins at 300mA, 800 MeV. The average pressure of static and dynamic vacuum are below 2·10⁸ Pa and 1.2·10^-7 Pa respectively. The design, installing and commissioning of the vacuum system of the storage ring are detailed stated in in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE29
About •	paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017
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MOPE30	The Development of CuCrZr High Heat Load Absorber in TPS	vacuum, synchrotron, radiation, synchrotron-radiation	77
	I.C. Sheng, C.K. Chan, C.-C. Chang, C. Shueh, L.H. Wu NSRRC, Hsinchu, Taiwan S.K. Sharma BNL, Upton, Long Island, New York, USA
	TPS project in National Synchrotron Radiation Research Center (NSRRC) in Taiwan has reached 500mA design goal. Several upgrades and design enhancements is also under development. CuCrZr copper alloy material has been selected to examine its UHV compatibility, machinability and high heat load sustainability. Most importantly, the absorber is made entirely by CuCrZr (including two end flanges) and installed in the mid-section of double minimum of tandem EPU48 undulators to shadow beam miss-steered synchrotron radiation from upstream EPU. Both the result and fabrication time (without brazing) are promising.
	Poster MOPE30 [0.547 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE30
About •	paper received ※ 06 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017
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MOPE31	Dynamic Performance of a Support System for BBA Components in SXFEL	FEL, undulator, electron, quadrupole	80
	F. Gao, R.B. Deng, Y.X. Dong, X. Hu, Z. Jiang, S. Sun, L. Wang, Y.M. Wen SINAP, Shanghai, People’s Republic of China
	The electron beam orbit stability is very important for the Free Electron Laser (FEL) facility. The high beam position stability requirement results in the high position stability for the FEL key components, such as quadruple magnet (Q) and beam position monitor (BPM). This work focus on the research of the dynamic performance of a mechanical support system composed of mechanical supports - including sheets and adjustments - and a granite block mounted on them. It will be applied for the beam based alignment (BBA) Q magnet and BPM for the Soft X-ray FEL project (SXFEL). The Finite-element -FE- calculations of the model characteristics were carried out to guide the subsequent tests. The test results show that the support system can meet the requirement of the SXFEL project.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE31
About •	paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017
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MOPE32	Preliminary Design and Analysis of the FODO Module Support System for the APS-U Storage Ring	storage-ring, alignment, experiment, damping	83
	J. Nudell, H. Cease, J.T. Collins, Z. Liu, C.A. Preissner ANL, Argonne, Illinois, USA
	Funding: Work supported by: Argonne is managed by UChicago Argonne, LLC, for the U.S. Department of Energy under con-tract DE-AC02-06CH11357. The most technically challenging module of the planned APS Upgrade (APS-U) project is the Focusing-Defocusing (FODO) module. The girder for the FODO must support a ~6m long string of three Q-bend and four quadrupole mag-nets. The challenges which emanate from retrofitting the existing APS tunnel with new hardware along with the stringent requirements for alignment and vibrational stability * necessitate a unique engineering solution for the magnet support system. FEA is heavily relied upon in order to create an optimized solution and reduce the number of design iterations required to meet specifications. The prototype FODO magnet support design is presented from the ground up, along with FEA justification and the expected vibrational performance of the module. * Glenn Decker (2014) Design Study of an MBA Lattice for the Advanced Photon Source, Synchrotron Radiation News, 27:6, 13-17, DOI: 10.1080/08940886.2014.970932
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE32
About •	paper received ※ 09 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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MOPE34	Preliminary Design of the Magnet Support and Alignment Systems for the Aps-U Storage Ring	alignment, storage-ring, lattice, MMI	87
	J.T. Collins, H. Cease, S.J. Izzo, Z. Liu, J. Nudell, C.A. Preissner ANL, Argonne, Illinois, USA
	Funding: Work supported by: Argonne is managed by UChicago Argonne, LLC, for the U.S. Department of Energy under con-tract DE-AC02-06CH11357. As part of the Advanced Photon Source Upgrade pro-ject (APS-U), the storage ring will be upgraded to a multibend achromat (MBA) lattice [1]. This upgrade will provide dramatically enhanced hard x-ray brightness and coherent flux to beamline experiments in comparison to the present machine. The accelerator physics require-ments for the upgrade impose very stringent alignment, assembly and installation tolerances and tight vibrational tolerances on the magnet support and alignment system designs. The short installation duration dictates a need for transporting groups of fully assembled magnet mod-ules into the storage ring enclosure while preserving magnet-to-magnet alignment. The current magnet sup-port and alignment systems preliminary design status for the APS-U storage ring will be presented along with an overview of the R&D program required to validate design performance. Magnet module transportation and installa-tion logistics will also be discussed. * Glenn Decker (2014) Design Study of an MBA Lattice for the Advanced Photon Source, Synchrotron Radiation News, 27:6, 13-17, DOI: 10.1080/08940886.2014.970932
	Poster MOPE34 [0.975 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE34
About •	paper received ※ 07 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017
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MOPE37	Diamond Multi-Bend Achromats for Low Emittance and New Insertion Devices	vacuum, alignment, emittance, storage-ring	90
	J. Kay, N.P. Hammond DLS, Oxfordshire, United Kingdom
	Diamond Light Source is pioneering the move to a Multi Bend Achromat storage ring lattice for low emittance combined with the creation of new straight sections available for Insertion Devices (ID). Diamond is at an advanced stage of replacing one Double Bend Achromat (DBA) cell of the existing storage ring with a Double Double Bend Achromat (DDBA). The DDBA cell which is to be installed in Autumn 2016 has 4 dipoles and has been designed with a new straight section in the middle. This allows a new ID source point to be installed on an existing Bending Magnet port in the shield wall for a new micro-focus protein crystallography beamline called VMX-m. This same principle will be applied to the proposed Diamond II project which will be based on a Double Triple Bend Achromat with 6 dipoles per cell achieving even lower emittance whilst providing many more IDs. This paper describes the engineering challenges of these projects.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE37
About •	paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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MOPE38	Milliprobe Scanner Station	detector, alignment, synchrotron, controls	93
	J. Divitcos, M. De Jonge, D. Howard, J. McKinlay ANSTO, Menai, New South Wales, Australia
	The research team at the Commonwealth Scientific & Industrial Research Organisation, Clayton CSIRO) have developed a high energy detector referred to as the Maia. The rapid scanning, high resolution detector offers technological advances, including non-invasive technical study of highly valued artworks. A vital application of the Maia detector is scanning x-ray fluorescence microscopy for obtaining the elemental composition of a large number of materials. The innovative detector allows connection between scientists & art communities to increase their understanding of historical artworks, broadening the field of authentication and potentially aiding the fight against art forgery as well as historical information. We have designed a new dedicated station that offers improvements in high stability, motion control and mounting. It is designed to support & scan various samples in size as well as shape powered by X & Y stages. A slide & hold clamping concept has been implemented which provides easy & rapid assembling of samples. This arrangement provides excellent interchangeability, supporting a variety of planar & non-planar samples for scanning.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE38
About •	paper received ※ 07 September 2016 paper accepted ※ 29 September 2016 issue date ※ 22 June 2017
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MOPE40	Designing the Flash II Photon Diagnostic Beamline and Components	diagnostics, vacuum, experiment, photon	96
	D. Meissner, M. Brachmanski, M. Hesse, U. Jastrow, M. Kuhlmann, H. Mahn, F. Marutzky, E. Plönjes-Palm, M. Röhling, H. Schulte-Schrepping, K.I. Tiedtke, R. Treusch DESY, Hamburg, Germany
	From 2013 to 2016 the free electron laser FLASH at DESY in Hamburg, Germany was upgraded with a second undulator line, photon diagnostic line, beam distribution and experimental hall connected to the same linear accelerator. This paper shows the layout of the photon diagnostic section and an overview of the civil engineering challenges. The mechanical design of selected components, e.g. vacuum components, diagnostic equipment and safety related components is presented.
	Poster MOPE40 [1.081 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE40
About •	paper received ※ 08 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017
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MOPE41	Design and Construction of a PW Experimental System of HV Chamber Adaptable, Modular and Stable	laser, vacuum, experiment, resonance	99
	A. Carballedo, C. Colldelram, J.R. García, R. Monge, L. Nikitina ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain J. Hernandez-Toro, L. Roso CLPU, Villamayor, Spain
	Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no 654148 Laserlab-Europe In the recent years, the number of high power lasers devoted to particle acceleration has increased in Europe. Additionally to this, some synchrotrons and accelerators are integrating these lasers in its lines, increasing the scientific synergies. The HP laser must be transported in HV. The use of HV also permits good cleanliness in the optical set up. As addition, is necessary to create an adaptable and modular design where several chambers could be assembled together. One additional constrain is the stability. A new model of HV chambers is presented. These consist in a frame where the walls are exchangeable panels, which make easier the introduction of a new configuration of ports. The system was designed as construction blocks. For a proper connection of the chambers a new interior fixation and pushers system was designed. Thanks to this, coupling new HV chambers, the volume total can be also easily modified. Finally, a third generation decoupled system is integrated inside, consisting of a stable breadboard, this supported by six columns that implement a preloaded kinematical mount, providing both an outstanding stability and a fine regulation (1st RM: 77Hz).
	Poster MOPE41 [0.938 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE41
About •	paper received ※ 09 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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MOPE42	Experimental and Numerical Study of the ALBA LINAC Cooling System	linac, experiment, operation, cavity	102
	M. Ferrater UPC, Barcelona, Spain J.J. Casas, C. Colldelram, D. Lanaia, R. Muñoz Horta, F. Pérez, M. Quispe ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	This work investigates experimentally and numerically the performance of the ALBA LINAC cooling system. The main objective is to enhance the hydraulic system in order to significantly improve its thermal and water flow stability. In normal operation some problems have been identified that affect the performance of the LINAC: flowrate below the nominal values and water flow decreasing in time. The cooling subsystems have been experimentally characterized in terms of the pressure drop and flowrate. The measurements were taken using a portable hydraulic unit made at ALBA as well as a set of ultrasonic flowmeters. For the numerical studies the cooling network has been simulated using the software Pipe Flow Expert. The experimental results have shown that a number of components are too restrictive. In some cases the possibility to increase the flowrate is limited. The numerical results show that the velocity magnitude is inadequate in some places, producing air bubble entrapment, high pressure drop at pipes and insufficient flow. Based on this study several modifications are presented in order to raise the nominal flow and to adequate the water flow velocities between 0.5 and 3 m/s.
	Poster MOPE42 [1.073 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE42
About •	paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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MOPE43	Hydraulic Failure Caused by Air in Pipelines of the Experimental Area Ring of ALBA Synchrotron Light Source: Research, Simulations and Solutions	experiment, controls, simulation, operation	105
	L. Macià UPC, Barcelona, Spain J.J. Casas, C. Colldelram, M. Quispe ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	After five years in operation of the ALBA Synchrotron Light Source a hydraulic failure caused a maximum decreasing of water flow about 40% of its nominal value, hampering the refrigeration of the local components. The problem was mainly caused by the air accumulated in pipes due to very low velocities of water flow. A literature review was conducted about the minimum water flow velocity for removing air in pipelines as design criteria. The aim of this work is to develop hydraulic solutions in order to achieve the minimum flowrate in pipelines of the Experimental Area (EA) ring. In the short term it is proposed to install a controlled bypass in the EA. A numerical simulation using the software Pipe Flow Expert has been implemented in order to determine the requirements of the bypass that works under different conditions to assure a minimum flowrate all along the ring. The velocity map in EA ring is simulated for different scenarios: 180 and 360 degrees distribution for both clockwise and anticlockwise rotation. For the long term a design of pipes with variable cross section is proposed which optimizes the flow velocity magnitude in EA ring in agreement with the design criteria.
	Poster MOPE43 [1.347 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE43
About •	paper received ※ 10 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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TUAA01	Precision Mechanical Design of a Miniature Dynamic Mirror Bender for the SSRF Beamline Upgrade Project	controls, SRF, synchrotron-radiation, synchrotron	108
	D. Shu, J.W.J. Anton, S.P. Kearney ANL, Argonne, Illinois, USA J.W.J. Anton University of Illinois at Chicago, Chicago, USA A. Li, C. Mao, Y. Pan SINAP, Shanghai, People’s Republic of China
	Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357 and Argonne SPP project 85·10⁷⁷. Work at SINAP supported by NNSF of China No. U1332120. Dynamic mirror benders which enable high precision figuring of planar substrates for x-ray focusing are widely used as conventional optical equipment in various synchrotron radiation beamlines. Especially, in cases for x-ray focusing optics coated with multilayers in a Kirkpatrick-Baez configuration as the final focusing elements immediately upstream of the sample, the dynamic mirror benders provide high precision figuring to allow the mirror figure to be tuned to optimize the focusing at different incidence angles to cover a wide energy range . Recently, collaboration between Argonne National Laboratory and Shanghai Institute of Applied Physics (SINAP) has produced designs of a new miniature dynamic mirror bender with Argonne’s laminar nanopositioning flexure technique * for beamline upgrade project at the Shanghai Synchrotron Radiation Facility (SSRF). The mechanical design and finite element analyses of the miniature dynamic mirror bender, as well as its initial mechanical test results with laser interferometer are described in this paper. * R. Barrett, J. Härtwig, C. Morawe et al, Synchrotron Radiation News, 23, No.1, 36-42(2010) ** U.S. Patent granted No. 6,984, 335, D. Shu, T. S. Toellner, and E. E. Alp, 2006.
	Slides TUAA01 [7.411 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUAA01
About •	paper received ※ 10 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017
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TUAA02	Earth, Wind, and Fire: The New Fast Scanning Velociprobe	controls, optics, GUI, coupling	112
	C.A. Preissner, J. Deng, C. Jacobsen, B. Lai, F.S. Marin, J. Maser, S.T. Mashrafi, C. Roehrig, S. Sullivan, S. Vogt ANL, Argonne, Illinois, USA
	Funding: Argonne is managed by UChicago Argonne, LLC, for the U.S. Department of Energy under contract DE-AC02-06CH11357. The Advanced Photon Source Upgrade (APS-U) project will include a suite of new beam-lines. In preparation for this, a team at the APS is developing an X-ray microscope with a novel granite (Earth), air bearing (Wind) supported stage to take advantage of the two orders of magnitude increased coherent flux (Fire) that will be available with the APS-U. The instrument will be able to operate as a scanning probe for fluorescence microscopy and as a ptychoprobe for the ultimate in spatial resolution. Both are combined with tomography. The goals for the instrument while operating at the current APS are to demonstrate fast scanning of large samples at high resolution and ptychography at the highest resolution (speed and resolution limited by available flux). This presentation will discuss the unique mechanics, interferometry scheme, the advanced scanning control, and instrument integration.
	Slides TUAA02 [25.518 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUAA02
About •	paper received ※ 10 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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TUBA01	The Design of a Precision Mechanical Assembly for a Hard X-ray Polarizer	experiment, simulation, controls, synchrotron-radiation	116
	S.P. Kearney, D. Shu, T.S. Toellner ANL, Argonne, Illinois, USA
	Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357 Hard x-ray polarisers are commonly applied in synchrotron radiation research to produce photons in a pure polarization state, and as polarization filters to analyse the photon’s polarization state after their interaction with a sample medium. We present the design of a mechanical assembly suitable for a hard X-ray polariser that requires multiple degrees of freedom with the base stage capable of handling at least 2-3 kg loads. The intermediary stages (roll, yaw, and translation directions) consist of commercially available tip/tilt and translational stages (Kohzu Precision Co., LTD). However, the requirements of the pitch stage are much more demanding and require a custom-designed flexure-based rotation stage. The design and analysis of this flexure-based rotation stage will be discussed in this study. This will include FEA analysis of the dynamic response and rotation range capabilities which will then be compared to mechanical performance test results using laser interferometers and accelerometer sensors.
	Slides TUBA01 [1.586 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUBA01
About •	paper received ※ 09 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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TUBA03	The Generic Mirror Chamber for the European XFEL	FEL, alignment, optics, software	121
	T. Noll BESSY GmbH, Berlin, Germany H. Sinn, A. Trapp XFEL. EU, Hamburg, Germany
	For the high demanding requirements of the beam-lines of the European XFEL [] new mirror chambers were developed, designed and tested. A prototype contains the main features of all needed ten units which are tested extensively. The concept of the mirror chamber is a further development of our Cartesian parallel kinematics for X-ray optics in the UHV []. The stiffness and vibration behaviour were further improved and the position resolution was increased compared to earlier implementations at Bessy and Flash. For that the drives were redesigned and now feature a stroke of 100 mm with nanometer resolution. H. Sinn, TDR: X-Ray Optics and Beam Transport, December 2012, XFEL. EU TR-2012-006 doi:10.3204 ** T. Noll, Parallel kinematics for nanoscale Car-tesian motions, Precision Engineering Vol.33/3 Pg.291
	Slides TUBA03 [38.484 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUBA03
About •	paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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TUBA04	Mechanical Design and Development of Compact Linear Nanopositioning Flexure Stages with Centimeter-Level Travel Range and Nanometer-Level Resolution	GUI, controls, laser, photon	124
	D. Shu, J.W.J. Anton, S.P. Kearney, B. Lai, W. Liu, J. Maser, C. Roehrig, J.Z. Tischler ANL, Argonne, Illinois, USA J.W.J. Anton University of Illinois at Chicago, Chicago, USA
	Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357. Nanopositioning techniques present an important capability to support the state-of-the-art synchrotron radiation instrumentation research for the APS operations and upgrade project. To overcome the performance limitations of precision ball-bearing-based or roller-bearing-based linear stage systems, two compact linear nanopositiioning flexure stages have been designed and developed at the APS with centimeter-level travel range and nanometer-level resolution for x-ray experimental applications. The APS T8-54 linear flexure stage is designed to perform a precision wire scan as a differential aperture for the 3-D diffraction microscope at the APS sector 34, and the APS T8-56 linear flexure stage is designed for a horizontal sample scanning stage for a hard x-ray microscope at the APS sector 2. Both linear flexure stages are using a similar improved deformation compensated linear guiding mechanism which was developed initially at the APS for the T8-52 flexural linear stage . The mechanical design and finite element analyses of the APS T8-54 and T8-56 flexural stages, as well as its initial mechanical test results with laser interferometer are described in this paper. U.S. Patent granted No. 8,957, 567, D. Shu, S. Kearney, and C. Preissner, 2015.
	Slides TUBA04 [7.057 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUBA04
About •	paper received ※ 10 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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TUCA02	Structural Dynamic Modelling and Measurement of SwissFEL Bunch Compressor	GUI, FEL, acceleration, damping	128
	X. Wang, H. Jöhri, F. Löhl, M. Pedrozzi, T. Stapf PSI, Villigen PSI, Switzerland
	Magnetic chicanes are used in accelerator facilities to longitudinally compress the accelerated particle bunches. The second compression chicane (BC2) of SwissFEL consists of four dipole magnets bending the beam on the horizontal plane along a C-shaped orbit and has a total length of 17 m. The position of the two central dipoles can be continuously adjusted to achieve the required transverse offset in order to realize a wide range of compression schemes. To ensure the requires mechanical stability of the accelerator components sitting on the long and movable steel girder (7.7 m), it is essential to design a stiff support structure with high eigen frequencies. In the design stage, displacement frequency responses are calculated in a modal based linear dynamic analysis using finite element method to ensure vibration amplitude below 1 micrometer. Special considerations are given to the modelling of linear guide systems, as they introduce nonlinear support conditions and need to be adequately simplified in the calculation. After completing the BC2 assembly, vibration measurements were performed. Finally, the validation of the numerical model by measurement results will be presented.
	Slides TUCA02 [3.884 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUCA02
About •	paper received ※ 10 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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TUCA03	Estimation of the Temperature Fluctuations Harshness Regarding Stability of Structures in the Nanometer Range	experiment, ECR, simulation, operation	133
	N. Jobert, F. Alves, S.K. Kubsky SOLEIL, Gif-sur-Yvette, France
	Thermally induced distortions are a key contributor to the overall positional and pointing performance of high-stability systems. Though stability scales with temperature fluctuations, there is some hidden complexity is the subject. Firstly, not all temperature oscillations will distort the structure: fast variations will hardly propagate into the structure, little change in overall dimensions but primarily pointing errors. Conversely, slow variations will result in quasi uniform temperature fields that change dimensions, hence mainly positional errors. Secondly, there is randomness in temperature fluctuations which obscures the actual severity of a given environment: randomness occurs timewise, but also space-wise. For highly stable situations, random part of the temperature field becomes prominent, and discarding this component becomes questionable. No harshness indicator exists that could help quantifying the actual severity of a given thermal environment. It is the objective of this paper to provide some insight on the matter, and propose a simple yet efficient numerical method allowing the evaluation of actual structural response to any realistic thermal environment.
	Slides TUCA03 [7.080 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUCA03
About •	paper received ※ 01 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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TUCA05	The New High Dynamics DCM for Sirius	controls, synchrotron, GUI, feedback	141
	R.R. Geraldes, R.M. Caliari, G.B.Z.L. Moreno, L. Sanfelici, M. Saveri Silva, N.M. Souza Neto, H.C.N. Tolentino, H. Westfahl Jr. LNLS, Campinas, Brazil T.A.M. Ruijl, R.M. Schneider MI-Partners, Eindhoven, The Netherlands
	Funding: Brazilian Ministry of Science, Technology, Innovation and Communication The monochromator is known to be one of the most critical optical elements of a synchrotron beamline, since it directly affects the beam quality with respect to energy and position. The new 4th generation machines, with emittances in the range of order of 100 pm rad, require even higher stability performances, in spite of the still conflicting factors such as high power loads, power load variation, and vibration sources. A new high-dynamics DCM (Double Crystal Monochromator) is under development at the Brazilian Synchrotron Light Laboratory for the future X-ray undulator and superbend beamlines of Sirius. Aiming at an inter-crystal stability of a few tens of nrad (even during the Bragg angle motion for flyscans) and considering the limitations of current DCM implementations, several aspects of the DCM engineering are being revisited. In order to achieve a highly repeatable dynamic system, with a servocontrol bandwidth in the range of 200 Hz to 300 Hz, solutions are proposed for a few topics, including: actuators and guides, metrology and feedback, LN2 indirect cooling, crystal clamping, thermal management and shielding. The concept of this high-dynamics DCM will be presented.
	Slides TUCA05 [2.254 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUCA05
About •	paper received ※ 11 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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TUCA06	The Girders System for the New ESRF Storage Ring	alignment, SRF, storage-ring, resonance	147
	F. Cianciosi, T. Brochard, Y. Dabin, L. Goirand, M. Lesourd, P. Marion, L. Zhang ESRF, Grenoble, France
	The ESRF is proceeding with the design and procurement of its new low emittance storage ring (Extremely Brilliant Source project). This completely new storage ring requires a high performance support system, providing high stability (first resonance frequency about 50Hz) and a precise alignment capability (50µm, manual in transverse direction and motorized in the vertical one). In order to meet these requirements we decided to support the magnets of each of the 32 cells of the synchrotron with four identical girders that was considered the best compromise between cost, complexity and performances. Each of the resulting 128 girders is 5.1m long, carries about seven tons of magnets, and its weight including fixed basement and adjusting system is six tons. The adjustment system relies on modified commercial wedges; their stiffness was evaluated through laboratory tests. The FEA calculations carried out to optimize the design will be presented, together with the results obtained on a complete prototype girder system which was built and extensively tested and confirmed the modal calculations.
	Slides TUCA06 [17.229 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUCA06
About •	paper received ※ 07 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017
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TUPE01	DMM Thermal Mechanical Design	optics, detector, operation, experiment	152
	J.H. Kelly DLS, Oxfordshire, United Kingdom
	A Double Multilayer Monochromator (DMM) was designed in-house for the VMXi beamline. Thermal mechanical finite element analysis was performed to design a novel optic geometry, employing In/Ga eutectic cooling. The integration of a DMM into the existing beamline required additional power management components, such as a low energy power filter, a power detector and compact CuCrZr masks. This paper describes the thermal management challenges and their solutions. The DMM has been fully commissioned and is operational within the original I02 beamline.
	Poster TUPE01 [6.566 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE01
About •	paper received ※ 08 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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TUPE02	Experimental Validated CFD Analysis on Helium Discharge	simulation, experiment, SRF, cryogenics	156
	J.-C. Chang, Y.C. Chang, F.Z. Hsiao, S.P. Kao, H.C. Li, W.R. Liao, C.Y. Liu NSRRC, Hsinchu, Taiwan
	National Synchrotron Radiation Research Center in Taiwan (NSRRC) had set up three cryogenic systems to provide liquid helium to superconducting radio-frequency (SRF) cavities, insertion devices, and highly brilliant hard X-ray. The first one could produce liquid helium 134 LPH, with maximum cooling capacity of 469 W at 4.5 K. The second one could produce liquid helium 138 LPH, with maximum cooling capacity of 475 W at 4.5 K. The third one could produce liquid helium 239 LPH, with maximum cooling capacity of 890 W at 4.5 K. However, large liquid helium discharge in a closed space will cause personnel danger of lack of oxygen. We performed Computational Fluid Dynamic (CFD) simulation to analyse helium discharge through a SRF cavity in the Taiwan Light Source (TPS) tunnel. We simulated cases of helium discharge flow rates from 0.1 kg/s to 4.2 kg/s with and without fresh air supplied from the air conditioning system. We also set up both physical and numerical models within a space of 2.4m in length, 1.2m in width and 0.8m in height with nitrogen discharge inside to validate the CFD simulation.
	Poster TUPE02 [0.671 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE02
About •	paper received ※ 08 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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TUPE04	Coherent Soft X-Ray EPU Vacuum Chamber Thermal Analysis for Synchrotron Radiation Protection	vacuum, synchrotron-radiation, synchrotron, radiation	159
	H.C. Fernandes, P.L. Cappadoro, D.A. Harder, D.A. Hidas, C.A. Kitégi, M. Musardo, J. Rank, T. Tanabe BNL, Upton, Long Island, New York, USA
	Funding: Department of Energy The purpose of this study was to determine the effect of beam mis-steering, on the temperature of the vacuum chamber. The chamber used for this study was for the Coherent Soft X-Ray (CSX) Elliptically Polarizing Undulator (EPU). Finite Element Analysis was conducted on the vacuum chamber to determine the temperature distribution on the chamber for set values of beam mis-steer, for NSLS-II. These results were then compared with on-site temperature measurements taken using RTD¿s, as well as thermal sensitive cameras. The accuracy of these results was analyzed and further FEA studies were proposed for steeper beam mis-steers and beam offsets.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE04
About •	paper received ※ 09 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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TUPE05	Numerical Simulation of the ALBA Synchrotron Light Source Cooling System Response for Failure Prevention	ECR, simulation, synchrotron, operation	162
	X. Escaler UPC, Barcelona, Spain J.J. Casas, C. Colldelram, M. Prieto, M. Quispe ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	The ALBA Synchrotron Light Source cooling system is designed with a common return pipe that interconnects the four consumption rings. Such configuration is believed to compromise its optimal operation. To understand its thermo-fluid dynamic behaviour, a detailed 1D model has been built comprising all the components such as the pipes, fittings, bends, valves, pumping stations, heat exchangers and so on, and the various regulation mechanisms. Preliminarily, the model results in steady state operating conditions have been compared with experimental measurements and the maximum deviations have been found below 13%. Then, a series of transient numerical simulations have been carried out to determine the system response. Specifically, effects of the blockage and leakage of a consumption line as well as the increase and decrease of heat duty for the tunnel rings have been investigated. As a result, the stability of the system has been evaluated and the operational limits have been estimated in front of hydraulic and thermal load variations. Moreover, particular behaviors have been identified which can be used to design monitoring and control strategies to prevent unexpected failures.
	Poster TUPE05 [0.615 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE05
About •	paper received ※ 07 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017
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TUPE06	Thermo-Fluid Numerical Simulation of the Crotch Absorbers’ Cooling Pinholes for ALBA Storage Ring	storage-ring, synchrotron, simulation, radiation	165
	X. Escaler, V. Arbo Sangüesa UPC, Barcelona, Spain J.J. Casas, C. Colldelram, M. Prieto, M. Quispe ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	The ALBA Synchrotron Light Facility crotch absorbers, that remove the unused storage ring radiation, incorporate an internal cooling system composed by a number of parallel pinholes and by the corresponding stainless steel inner tubes inserted into each of them. Water flows in the resulting annular sections to evacuate the total heat power. Around each inner tube, a spiral wire is fixed along the whole length with a given pitch height in order to enhance the convection heat transfer. The influence of several design parameters on the absorber thermo-fluid behavior has been evaluated by means of the CFD software ANSYS CFX. In particular, the wall heat transfer coefficients and the pressure losses through a single pinhole have been evaluated for a range of different flow rates and pitch heights. Moreover, some modifications of the end wall geometry have been simulated as well as the effect of reversing the flow direction inside the channels. Finally, the critical crotch absorber type 3 has also been simulated and the limiting pitch height-flow rate combinations have been found based on the available driving pressure of the cooling system.
	Poster TUPE06 [1.546 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE06
About •	paper received ※ 07 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017
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TUPE08	Finite Element Analysis of a Photon Absorber Based on Volumetric Absorption of the Photon Beam	photon, radiation, simulation, synchrotron-radiation	169
	K.J. Suthar, P.K. Den Hartog ANL, Argonne, Illinois, USA
	Funding: This research used resources of the APS, a U.S. Department of Energy (DOE) Office of Science User Facility operated by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Designing photon absorbers for next generation multibend achromat storage rings can be challenging considering the high power densities and limited space that will typically be present. The potential for problematically high material temperatures and thermal gradients can be expected to be greater than that for previous generation machines on account of the shorter source-to-receiving surface distances. Conventionally, photon absorbers are made from copper which is highly opaque to x-rays. A consequence of this is that the majority of the heat is absorbed within a very short distance of the surface. Utilizing materials that allow a more volumetric absorption of the radiation can improve the efficiency of heat removal as it can keep surface temperatures and thermal gradients lower than would otherwise be possible. This paper discusses multiphysics analysis of a crotch absorber for the APS Upgrade project (APS-U) via full-coupling of heat-transfer and structural mechanics. The simulation results are discussed in detail.
	Poster TUPE08 [1.943 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE08
About •	paper received ※ 10 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017
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TUPE09	Thermo-Fluid Study of the UPC Race-Track Microtron Cooling System	linac, microtron, simulation, vacuum	173
	X. Escaler, V. Blasco, Yu.A. Kubyshin, J.A. Romero, A. Sanchez UPC, Barcelona, Spain M. Prieto ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain V.I. Shvedunov SINP MSU, Moscow, Russia
	The cooling system of the race-track microtron (RTM), which is under construction at the Universitat Politècnica de Catalunya (UPC), has been simulated by means of a computational fluid dynamics (CFD) software. The hydraulic and thermal performance of the system has been studied for various operation conditions. Firstly, the hydraulic model has been validated by comparison with experimental measurements at different flow rates. Then, the cooling fluid temperatures and the pressure losses of the system have been determined and the capacity of the current design to remove the generated heat at nominal power has been confirmed. Finally, the wall maximum and average temperatures and heat transfer coefficients inside the magnets and the accelerating structure have been calculated. These results have allowed us to localize sections of the cooling system with a low convection due to detached flows where, therefore, a risk of zones of high temperatures exists. An optimization of the cooling circuit with the aim to reduce such high temperature zones has been proposed.
	Poster TUPE09 [0.552 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE09
About •	paper received ※ 02 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017
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TUPE10	A Thermal Exploration of Different Monochromator Crystal Designs	lattice, synchrotron, cryogenics, synchrotron-radiation	176
	J.S. Stimson, M.C.L. Ward BCU, Birmingham, United Kingdom S. Diaz-Moreno, P. Docker, J. Kay, J. Sutter DLS, Oxfordshire, United Kingdom
	Eight potential monochromator crystal designs were subjected to a combination of three different beam powers on two different footprints. The temperature and thermal deformation were determined for each. It was found that thermal deformation of the lattice is negligible compared to the surface curvature, and that while the thinnest crystal wafer showed the smallest temperature increase, crystals cooled from the bottom alone demonstrated a far more uniform thermal deformation and a larger radius of curvature.
	Poster TUPE10 [3.411 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE10
About •	paper received ※ 10 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017
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TUPE11	Study on Thermal Mechanical Design and Optimization Analysis for the ALBA Infrared Microspectroscopy Beamline (MIRAS) Extraction Mirror Based on Finite Element Analysis	extraction, radiation, dipole, synchrotron	179
	M. Quispe, A. Carballedo, J.J. Casas, C. Colldelram, A. Crisol, G. Peña, L. Ribó, I. Sics, I. Yousef ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	This paper reports design, modelling, simulation and optimization results for the ALBA MIRAS infrared radiation extraction mirror. Finite element analysis (FEA) was used to simulate the thermal mechanical behaviour of the device. With the aim to ensure a good thermal performance, conservative assumptions were applied: all of the incident Bending Magnet (BM) radiation is absorbed at the mirror surface, constant bending magnetic field and low thermal contact between the mirror Al 6061 and the OFHC copper arm. A novel solution has been implemented in order to provide an effective cooling by a natural convection on the in-air part of extraction mirror assembly. This has voided the necessity for a water cooling that often causes problems due to the associated vibrations. The power conditions were calculated by using SynRad+. The main ALBA Storage Ring design parameters are: 3 GeV, 400 mA and 1.42 T. According to these conditions, the mirror absorbs 15 W with a peak power density of 0.51 W/mm2. The peak temperature calculated was 63.2 °C. The real measurements reported during the commissioning stage showed a good thermal performance, in agreement with the results predicted by FEA.
	Poster TUPE11 [0.881 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE11
About •	paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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TUPE12	Developing White Beam Components of TPS Beamline 24A	simulation, shielding, laser, target	183
	M.H. Lee, C.Y. Chang, C.H. Chang, S.H. Chang, C. Chen, C.C. Chiu, L. Huang, L. Lai, L. Lee, D.G. Liu, Y. Su, H.Y. Yan NSRRC, Hsinchu, Taiwan
	The TPS 24A, Soft X-ray Tomography (SXT) beamline, is one of the beamlines in the second construction phase at the Taiwan Photon Source (TPS). This bending magnet (BM) beamline has high flux in the range between 260 eV and 2600 eV. It is designed for transmission full-field imaging of frozen-hydrated biological samples. At the exit slit, the beam flux optimized in 520 eV is 282 billion photons/second with resolving power 2000, the beam size is 0.05 mm × 0.06 mm (V × H, FWHM) and the beam divergence is 1.73 mrad × 1.57 mrad (V × H, FWHM). By contributions of the generic beamline components project in recent years, modular mechanisms would be used in this beamline such as mask, X-ray beam position monitor (XBPM), photon absorber (PAB), and screens. However, these beamline components were designed for ID beamlines, so they should be redesigned for BM beamlines. This paper generally introduce these beamline components decided and redesigned for the TPS 24A. They will play important roles at the BM beam-lines in the future.
	Poster TUPE12 [1.355 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE12
About •	paper received ※ 09 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017
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TUPE13	Numerical Simulation of the ALBA Synchrotron Light Source Cooling System Response to Pump Start-Up and Shut-Down	controls, synchrotron, simulation, network	187
	X. Escaler, D. Juan Garcia UPC, Barcelona, Spain J.J. Casas, C. Colldelram, M. Prieto, M. Quispe ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	The ALBA Synchrotron Light Source cooling system is submitted to regular pump start-ups and shut-downs. Moreover, pumps can trip due to motor power failures. As a result, the piping system can be subjected to surges and pressure oscillations. The 1D thermo-fluid simulation software Flowmaster has been used to predict these transient conditions taking into account the fluid compressibility, the pipe elasticity, the characteristic time response of the check valves and the pump/motors moments of inertia. During pump start-ups, significant pressure rises are detected that can be reduced by readjusting the PID controller parameters. Unexpected pump shut-downs do not appear to provoke significant water hammer conditions. However, pressure fluctuations are generated mainly in the same pumping line but also in the rest of the system due to the particular common return configuration. In all the cases the pressure regulation mechanisms acting on the pump rotating speeds serve to attenuate the consequences of these transients. Finally, the feasibility of the model to simulate the effect on the system response of trapped air inside the pipes has also been evaluated.
	Poster TUPE13 [0.743 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE13
About •	paper received ※ 07 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017
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TUPE14	Study, Design and Optimization Analysis of the ALBA LOREA Dipole Vacuum Chamber and Crotch Absorbers Based on Finite Element Analysis	dipole, radiation, vacuum, simulation	191
	M. Quispe, J. Campmany, J.J. Casas, C. Colldelram, A. Crisol, J. Marcos, G. Peña, M. Tallarida ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	This work deals with the FEA study, design and optimization of the LOREA dipole vacuum chamber and Glidcop Al-15 crotch absorbers. At present LOREA is the ninth beam-line being designed at ALBA with an Insertion Device (ID) consisting of an Apple II-type helical undulator. For the standard dipole chamber the vertical polarized light hits the walls because of the very narrow vertical aperture between the cooling channels. In vertical mode the ID vertical divergence equals ± 2.2 mrad and the peak power density and total power are 5.6 kW/mrad² and 5.5 kW, respectively. Due to the high power a temperature as high as more than 600 °C is calculated. In consequence the dipole chamber has to be modified and the absorbers have to withstand the Bending Magnet (BM) and ID radiation. The new absorbers have to be thicker and its cooling channels are farer from BM power deposition than the standard absorbers. The thermal mechanical simulations show good results, the new absorbers are in a safe range, the maximum temperature, stress and strain are 309.2 °C, 164.2 MPa and 0.14%, respectively. The main ALBA Storage Ring design parameters used in the simulations are: 3 GeV, 400 mA and 1.42 T (BM).
	Poster TUPE14 [1.524 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE14
About •	paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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TUPE15	Thermal Management and Crystal Clamping Concepts for the New High-Dynamics DCM for Sirius	synchrotron, radiation, simulation, undulator	194
	M. Saveri Silva, R.R. Geraldes, A. Gilmour LNLS, Campinas, Brazil T.A.M. Ruijl, R.M. Schneider MI-Partners, Eindhoven, The Netherlands
	Funding: Brazilian Ministry of Science, Technology and Inovation The monochromator is known to be one of the most critical optical elements of a synchrotron beamline, since it directly affects the beam quality with respect to energy and position. Naturally, the new 4th generation machines, with their small emittances, start to bring about higher stability performance requirements, in spite of factors as high power loads, power load variation, and vibration sources. A new high-dynamics DCM (Double Crystal Monochromator) is under development at the Brazilian Light Source for the Sirius EMA beamline (Extreme Condition X-ray Methods of Analysis). In order to achieve high-bandwidth control and stability of a few nrad, as well as to prevent unpredicted mounting and clamping distortions, new solutions are proposed for crystal fixation and thermal management. Since the design is based on flexural elements, it should be indeed highly predictable, so that the work was developed using mechanical and thermal FEA, including CFD. Efforts were made to predict thermal boundaries associated with the synchrotron beam, including incident, diffracted and scattered power, for which the undulator spectrum was employed in the Monte Carlo simulation package - FLUKA . "FLUKA: a multi-particle transport code", A. Ferrari, P.R. Sala, A. Fasso‘, and J. Ranft, CERN-2005-10 (2005), INFN/TC₀5/11, SLAC-R-773
	Poster TUPE15 [2.630 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE15
About •	paper received ※ 08 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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TUPE16	Design of A Leaf Spring Bender for Double Laue Crystal Monochromator at SSRF	SRF, synchrotron, focusing, optics	198
	H.L. Qin, K. Yang SSRF, Shanghai, People’s Republic of China L. Jin, H. Zhang, W. Zhu SINAP, Shanghai, People’s Republic of China
	A leaf spring bender geometry for water-cooled double Laue crystal monochromator (DLM) is presented. The DLM will be employed to acquire high energy mono-chromatic X-ray (60keV to 120keV) on the ultra-hard applications beamline at SSRF. A compact bending mechanism is designed in order to get horizontally fo-cused high energy monochromatic X-ray as small as 0.5mm. The bender applies a piece of thin asymmetric crystal and a pair of leaf springs which push the crystal to a sagittally bent radius as small as 1 meter by a pair of symmetry moments. An optimized crystal geometry is achieved by taking into account the meridional and sagit-tal bendings coupled and defined by the anisotropic elas-ticity of the asymmetric crystal. Furthermore, thermal slope error and structural stress of the bent crystal are analyzed by finite element method (FEA).
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE16
About •	paper received ※ 09 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017
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TUPE18	Design and FEA of a 3D Printed Detector Window Frame	detector, scattering, vacuum, experiment	201
	W. Tizzano DLS, Oxfordshire, United Kingdom
	The purpose of the project was to design and simulate a window assembly to be used in GISAX/GIWAX experiments. The window lies between the sample and the WAXS detector, a modified, in-vacuum detector, with modules removed to allow scattered radiation to pass through to a SAXS* detector positioned downstream. The window uses 75um thick Kapton HN film and given the size, pressure and the short distance to the sensors, it was necessary to support it on a frame. To avoid any information loss from shadowing of the detector, a frame was designed so that shadows will be projected into the gaps between the detector modules. The geometry was such that DMLS**** was an effective way of producing the item. Given the slenderness of the structure and the forces it supports, the material approaches or exceeds its yield point, so a bilinear, isotropic, hardening material model was chosen; moreover, large deflections were enabled. Also, the contacts were modelled with augmented Lagrange frictional formulation. All these assumptions made the analysis strongly non-linear. Grazing Incidence Small/Wide Angle X-ray scattering Wide Angle X-ray Scattering Small Angle X-ray Scattering **Digital Metal Laser Sintering
	Poster TUPE18 [7.079 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE18
About •	paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017
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TUPE19	Application of a NEG Coated Chamber at the Canadian Light Source	vacuum, storage-ring, undulator, survey	205
	S.Y. Chen, D. Bertwistle, K. Kei, C. Murray, T.M. Pedersen CLS, Saskatoon, Saskatchewan, Canada
	In the Fall of 2015 a 4800 mm long NEG coated chamber was installed in the Canadian Light Source in cell 9 straight section. The chamber will occupy to majority of the straight length. The chambers vacuum has been monitored for +1 year and no obvious issues has been found. The chamber body is 10 mm thick and the aperture is an ellipse with a 8 mm height and a 65 mm width. A design feature of the chamber is a lack of support in-between the ends of the chamber. The lack of support space is due to the double elliptically polarizing undulator (54 mm, and 180 mm period). This proceeding details the following: a.The structure design and Finite Element Analysis for the deflection and strength; b.Heat loads and cooling calculation; c.Supports design; d.Deflection and correction with the supports; e.Current strips installation f.Activation;
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE19
About •	paper received ※ 15 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017
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TUPE21	CLSI BMIT’s Super-Conducting Wiggler Cryogenic Safety Improvements*	wiggler, cryogenics, operation, vacuum	209
	L.X. Lin, T.W. Wysokinski CLS, Saskatoon, Saskatchewan, Canada
	4.1 T superconducting (SC) wiggler on CLS Biomedical Imaging and Therapy (BMIT) beamline [1-4] developed a critical problem in the cryogenic safety relief and refill paths. Ice blockage formed and prevented helium gas from relieving during liquid helium (LHe) refill. This resulted in an internal pressure built up, which caused expelling of the LHe and cold gas helium (GHe) from the wiggler cryostat. Several improvements were performed over the years including replacement of the original rupture disk, the pressure relief valves and installation of metal O-ring seals at external ports. Following these improvements, a major upgrade on the wiggler safety relief path was implemented by adding a new vent pipe directly connected to the cryostat for safety exhaust. The LHe refill path was also modified to eliminate possibility of ice blockage. During initial tests after the up-grades, we experienced significant heat load increase which was linked to the thermal acoustic oscillations in the LHe transfer line. The problem was resolved by improving the insulation vacuum in the transfer line and adding a super insulation assembly into the direct vent pipe along with a plug at the refill path. *Work supported by Budker Institute of Nuclear Physics under contract No. C60109-029 ¿ Linda. Lin@lightsource.ca
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE21
About •	paper received ※ 08 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017
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TUPE22	Low-Order Aberrations Correction of Extreme Ultraviolet Imaging Objective with Deformable Multilayer Mirrors	alignment, controls, optics, software	213
	M. Toyoda, R. Sunayama, M. Yanagihara Tohoku University, Institute of Multidisciplinary Research for Advanced Materials, Sendai, Japan
	For at-wavelength observation of a lithography mask, recently, we proposed an EUV microscope consisting of multilayer-mirror objective (operating wavelength: 13.5 nm, numerical aperture: 0.25). To provide diffraction-limited spatial resolution below 30 nm, reduction of wave aberrations of low order, i.e., spherical aberration, coma, and astigmatism, should be key technical challenge for the microscope. In this paper, firstly, we describe detail of optical design and instrumentation of the point diffraction interferometer (PDI), so as to provide high enough sensing accuracy of 100 pm, which would be required for an optical axis adjustment of the EUV objective. Next, experimental results of wave front correction on the EUV objective are reported. We corrected spherical aberration and coma by precisely aligning an optical axis of the mirrors, while effects of astigmatism were also minimized with a figure-deformable mirror which can control radius of curvature in two mutually orthogonal directions. We confirmed that these low order terms should be less than 0.3 nm RMS.
	Poster TUPE22 [3.217 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE22
About •	paper received ※ 06 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017
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TUPE23	Glidcop Brazing in Sirius’ High Heat Load Front-End Components	vacuum, synchrotron, operation, photon	216
	G.V. Claudiano, O.R. Bagnato, P.T. Fonseca, F.R. Francisco, R.L. Parise, L.M. Volpe LNLS, Campinas, Brazil
	Sirius is a 4th generation synchrotron light source in project. Some of Sirius’ beamlines will have a very high power density, more than 50 kW/mrad², to be dissipated in components that have a limited space condition. Thus, the refrigeration of these components is complex when one has in mind that the coolant flow cannot be too turbulent in order to not induce much vibration in the components. Oxygen Free Electrolytic Cu (OFEC) has been replaced by the Glidcop, on 4th generation synchrotron applications, due to its good thermal conductivity and preservation of mechanical properties after heating cycles. However, as this material is not very workable in terms of union with other materials, which led to the development of a brazing process for Glidcop and stainless steel union. Glidcop samples were submitted to a Cu-electroplating process and a silver base alloy (BVAg-8) was used to join the parts in a high vacuum furnace. Electroplating was used to improve the filler metal wettability. The results were very satisfactory, ensuring water and vacuum tightness. A desirable characteristic not yet proved is the virtual leak property. This paper will discourse about this brazing method.
	Poster TUPE23 [1.553 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE23
About •	paper received ※ 09 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017
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TUPE25	Metallurgical Evaluation of Dissimilar Metal Joints for Accelerator Vacuum Chamber Construction at the Advanced Photon Source Upgrade Project	vacuum, ECR, interface, laser	220
	G. Navrotski, B. Brajuskovic ANL, Argonne, Illinois, USA
	Funding: Funding provided by the Advanced Photon Source, U.S. Department of Energy, Office of Science, Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Tubular vacuum chamber assemblies made of aluminum, copper and stainless steel alloys will be used in the new Multi Bend Achromat (MBA) storage ring that is being developed at Advanced Photon Source (APS). Details of the new lattice magnet system design and ring impedance considerations continue to drive these vacuum chambers to smaller dimensions and thinner walls with tighter geometric tolerances under higher thermal loads. It is important to carefully evaluate the methods used to join these dissimilar metal components looking for compromise in primary strength, permeability, electrical and thermal properties while still creating structures that are ultra-high vacuum compatible and leak-tight. This paper visually details the underlying metallurgical changes that occur when joining various combinations of aluminum, OFE copper, GlidCop® and stainless steel using brazing, bonding and welding techniques. Each of the techniques has its advantages and disadvantages with engineering and economic consequences.
	Poster TUPE25 [2.312 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE25
About •	paper received ※ 07 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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TUPE26	Carbon-Steel/poliethylene Radiation Enclosures for the Sirius Beamlines	radiation, shielding, simulation, neutron	223
	L. Sanfelici, H.F. Canova, F.H. Cardoso, R. Madacki, M.A. Pereira, M.L. Roca Santo, L.G. Silva, M.S. Silva, J.E. dos Santos LNLS, Campinas, Brazil L. Buccianti, M.H.A. Costa, E. Palombarini Biotec Controle Ambiental, São José dos Campos, SP, Brazil C. Prudente Prudente Engenharia Ltda., Uberlândia, Minas Gerais, Brazil
	Funding: Brazilian Ministry of Science, Technology, Innovation and Communication Lead enclosures have been used over the past decades for radiation protection at mid and high-energy synchrotron light-sources, requiring nearly 10% of the investment needed to set up a new beamline. Due to the increasing concern about neutron levels, in part due to the reduction of the photon radiation levels with the increased thickness of the hutch walls, the existing constructive models were revisited and a new constructive approach based on Carbon-Steel (CS) and High-Density Polyethylene (HDPE) is proposed for the SIRIUS beamlines, leading to increased overall radiation protection and potentially lower cost. This work is going to show preliminary simulation results, cost-comparison, as well as a few mechanical design details and prototyping initiatives.
	Poster TUPE26 [2.930 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE26
About •	paper received ※ 09 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017
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TUPE28	Characterization of the Acoustic Field Generated by the Single-Axis Acoustic Levitator	experiment, simulation, LabView, photon	226
	A. Chavan GIT/ECE, Atlanta, Georgia, USA A. DiChiara, P.D. Hartog, B. Hu, K.J. Suthar ANL, Argonne, Illinois, USA
	The acoustic levitator utilizes two transducers that emit acoustic waves. A standing wave is generated between the two transducers that allows for the levitation of particles at the nodes of the standing wave. These levitated particles experience an instability. In order to aid in the process of solving this instability, the acoustic field created by one of the transducers was characterized in this experiment. This characterization helps to understand the intensity of the acoustic field at different points throughout the region and how the acoustic wave diverges as it travels away from the transducer.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE28
About •	paper received ※ 10 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017
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TUPE29	Integration of a Stripline Kicker Prototype for CLIC Project Into ALBA Storage Ring	kicker, synchrotron, vacuum, distributed	230
	R. Monge, J.C. Giraldo, J. Ladrera Fernández, M.L. Llonch, L. Nikitina, M. Pont, M. Quispe ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	The Compact Linear Collider (CLIC) project is an international collaboration with CERN for developing a high-energy and high-luminosity machine which accelerates and collides electrons and positrons at energies up to several tera-electron volts. The extraction system for the Damping Rings of the CLIC shall follow very tight requirements in order to maintain the ultra-low emittance of the extracted bunches. A first prototype of the extraction kicker based on stripline technologies has been built and characterized at CERN without beam. The stripline chamber will be shortly installed in the ALBA Synchrotron to be tested under beam. In situ measurements of the impedance, transversal field homogeneity and flat-top ripple aims to complete its characterization. This contribution presents the design of the set up for the integration of the stripline chamber in one of the medium straight sections of ALBA storage ring.
	Poster TUPE29 [4.469 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE29
About •	paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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TUPE31	Manufacturing of Photon Beam-Intercepting Components from CuCrZr	vacuum, photon, operation, synchrotron	233
	F.A. DePaola, C. Amundsen, S.K. Sharma BNL, Upton, Long Island, New York, USA
	Photon beam-intercepting components in synchrotron light sources have usually been made as water-cooled Glidcop bodies brazed to stainless steel conflate flanges. This fabrication method involves many manufacturing steps which result in increased cost, long procurement time and lower manufacturing reliability. A new design approach was recently proposed which simplifies fabrication by eliminating brazing and utilizes a readily available copper alloy, CuCrZr. This paper describes the manufacturing experience gained at NSLS-II from fabricating many components of this new design. Results of an investigation of various techniques for joining CuCrZr to itself and to SS304 and AL-6061 are also presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE31
About •	paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

Paper

Title

Other Keywords

Page

MOPE01

Stabilization Methods for Force Actuators and Flexure Hinges

ECR, experiment, optics, site

1

C. Colldelram, J. Nicolás, C. Ruget
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

In the framework of the design of an adaptive optics for x-ray mirrors a stabilization system* for force actuators and flexure hinges have been conceived. This corrector allows to deform the mirror surface at nanometre level but for this purpose it requires resolutions better than 0.02, by using ultra-low constant springs, and to preserve the introduced deformation it is needed to be stable at the same level. The corrector needs to be insensitive when dismantling and remounting the mirror. In the other hand in order to support the corrector its structure is attached to the bender frame and the spring force is transmitted through a level arm by means a bearing articulation. This introduces a small friction but it is still preferably to eliminate it. A new method based -k spring-like constant principle is proposed. Based on this technique it is possible to stabilize the force exerted on the mirror below 0,02N for an error range more than 1 mm. In addition applying the principle to a flexure it allows to compensate it in an angular range in within the torque variation tend to be null, below 0,005 Nm, thus becoming a short range, frictionless and zero torque articulation.
* Patent Registered

Poster MOPE01 [1.046 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE01

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paper received ※ 15 September 2016 paper accepted ※ 08 May 2017 issue date ※ 22 June 2017

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MOPE02

Studies on Flow-Induced Vibrations for the New High-Dynamics DCM for Sirius

experiment, controls, acceleration, synchrotron

8

R.M. Caliari, O.R. Bagnato, F.R. Francisco, R.R. Geraldes, R.L. Parise, M. Saveri Silva, D.O. Tavares, L.,Jr. de Souza
LNLS, Campinas, Brazil
T.A.M. Ruijl
MI-Partners, Eindhoven, The Netherlands

The monochromator is known to be one of the most critical optical elements of a synchrotron beamline, since it directly affects the beam quality with respect to energy and position. Naturally, the new 4th generation machines, with their small emittances, start to bring about higher stability performance requirements, in spite of factors as high power loads, power load variation, and vibration sources. A new high-dynamics DCM (Double Crystal Monochromator) is under development at the Brazilian Light Source for the Sirius EMA beamline (Extreme Condition X-ray Methods of Analysis). The disturbances induced by the coolant flows are known to be among the most detrimental influences to a DCM performance, however, quantitative force numbers involved in such disturbances are not commonly investigated. According to the novel dynamic concept, these forces should be predictably translated into stability performance. Therefore, experimental setups that allow the indirect measurement of such forces in conditions close to those of operation were designed. The results comparing different indirect cooling profiles and manufacturing processes (brazing and additive manufacturing) are shown.

Poster MOPE02 [3.064 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE02

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paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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MOPE05

Mechanical Design of Secondary Source Slits for Hard X-ray Beamlines at Taiwan Photon Source

controls, scattering, site, photon

12

H.Y. Yan, C.H. Chang, S.H. Chang, C.Y. Chen, C.Y. Huang, J.M. Lin, D.G. Liu, D.-J. Wang
NSRRC, Hsinchu, Taiwan

The secondary source slits have been developed for specific hard X-ray beam-lines at Taiwan Photon Source. Especially for Coherent X-ray Scattering and X-ray Nanoprobe beam-lines, severe specifications of the slits are more necessary to define proper beam sizes in horizontal and vertical directions at sample. The opening size of each pair of slits assembled orthogonally is usually needed to range within several microns, so the UHV-compatible piezo-driven stages with closed-loop system were adopted for the purposes of fine adjustment, precise positional accuracy and repeatability. To reduce X-ray scattering effect, the rectangular single-crystal film was bonded on the edge of the slit blade. The machined rotary weak-link structure and piezo-driven actuators were used to slightly adjust parallelism of each pair of the blades with the method of single-slit diffraction. To enhance structural and thermal stability, the granite plinths with specified shape were designed and the precise temperature controlling system will be set up recently. The overall design, mechanical specifications and procedure of testing for secondary source slits will be introduced in this paper.

Poster MOPE05 [0.795 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE05

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paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017

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MOPE07

Ground Motions Measurements for Synchrotron

ground-motion, experiment, synchrotron, operation

15

D.T. Ziemianski
CUT, Kraków, Poland
M.P. Nowak
Solaris, Kraków, Poland

For more than two decades, ground vibration measurements were made by different teams for feasibility studies of linear accelerators. Recent measurements were performed in the SPS tunnel and at different CERN sites on the surface. The devices to measure vibrations of magnitude ranging in nanometres, the analysis techniques and the results are critically discussed and compared with the former measurements. The implication of the measured integrated R.M.S. displacements for the Crab cavities cavern is mentioned. The equipment used in this study consists of 2 state-of-the-art Guralp broadband triaxial seismometers. Models CMG-T60-0004 performed measurements in three directions V, N/S and E/W. The first analysis was to evaluate the power spectral density for each direction of sensors and event. The power spectral density is calculated from the auto power spectrum. The power spectral density shows a typical curve for the geophones with theμseismic peak between 0.2 and 0.4 [Hz]. It is import ant to point that ground vibrations should not be ignored in planning accelerator facility. Actually it is one of the limiting factor in the optimization of future accelerators.

Poster MOPE07 [4.968 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE07

About •

paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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MOPE08

The LNLS Metrology Building

controls, SRF, instrumentation, synchrotron

17

H.G.P. de Oliveira, C. Esper Neto, P.T. Fonseca, R.R. Geraldes, B.C. Meyer, M.A. Pereira, G.L.M.P. Rodrigues, L. Sanfelici, L.G. da Silva
LNLS, Campinas, Brazil
L. Buccianti, M.H.A. Costa
Biotec Controle Ambiental, São José dos Campos, SP, Brazil
C. Prudente
Prudente Engenharia Ltda., Uberlândia, Minas Gerais, Brazil

Funding: Brazilian Ministry of Science, Technology, Innovation and Communication.
The increasing demands of instrumentation projects for SIRIUS require more sensitive equipment to be devel-oped and characterized in theμand nanometer scale. To achieve this level of precision it is necessary to work within a controlled environment, minimizing instabilities and disturbance effects such as temperature variation and vibrations. Based on metrology labs as those at BESSY, ESRF, DLS and others, a new facility is currently under final construction stage at the LNLS, which will be dedi-cated to high precision optical and mechanical metrolo-gies. This work describes in detail the project of the new LNLS Metrology Building.

Poster MOPE08 [2.829 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE08

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paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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MOPE09

Preliminary Design and Test of Damping Mechanism for Reducing Vibration of TPS SR Vacuum Chamber

damping, vacuum, site, experiment

20

K.H. Hsu, M.L. Chen, C.M. Cheng, H.C. Ho, D.-G. Huang, C.K. Kuan, W.Y. Lai, C.J. Lin, S.Y. Perng, T.C. Tseng, H.S. Wang
NSRRC, Hsinchu, Taiwan

Since flow-induced vibration of vacuum chamber effects of the stability of the electron beam storage ring in Taiwan Photon Source (TPS), a damping mechanism was designed and installed to reduce vibration. The damping mechanism is composed of a clamper of vacuum chamber, a fixed fixture on the girder and a sandwiched stain-less steel support with damping materials inside. Different kinds of materials were applied in the damping mechanism for vacuum chamber. The vibration of vacuum chamber were obtained and compared. The design and vibration measurement results of damping mechanism for vacuum chamber are presented in this paper.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE09

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paper received ※ 11 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017

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MOPE10

Dynamic Analysis and Measurement of Ground Motion for the Solaris - National Synchrotron Radiation Centre in Cracow

experiment, ground-motion, synchrotron-radiation, synchrotron

24

D.T. Ziemianski
CUT, Kraków, Poland
M.P. Nowak
Solaris National Synchrotron Radiation Centre, Jagiellonian University, Kraków, Poland

The paper presents the results of the ground motion measurements and dynamic analysis performed in the Polish synchrotron radiation facility Solaris. The analysis has been carried out within the framework of the installation experimental lines inside Solaris building and accelerator tunnel. The equipment used in this study consists of 4 seismic, high sensitivity, ceramic flexural ICP accelerometer Models 393B31 (PCB), which performed measurements in one vertical directions. The first analysis was to evaluate the power spectral density for each sensors and event. The power spectral density is calculated from the auto power spectrum. The power spectral density shows a typical curve with theμseismic peak between 0.2 and 0.4 Hz. It is important to point that ground vibrations should not be ignored in planning accelerator facility. All over the measurement, the RMS integrated level in the vertical direction at 1 Hz were calculated and presented in paper.

Poster MOPE10 [2.916 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE10

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paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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MOPE11

Preliminary Active Vibration Elimination Study of the TPS Girder System

storage-ring, synchrotron, ion-source, alignment

26

T.C. Tseng, M.L. Chen, H.C. Ho, K.H. Hsu, D.-G. Huang, C.K. Kuan, W.Y. Lai, C.J. Lin, S.Y. Perng, C.W. Tsai, H.S. Wang
NSRRC, Hsinchu, Taiwan

The Taiwan Photon Source (TPS) had delivered the first synchrotron light on the last day of 2014 and is to open to the users from September 2016 after one and half years of commissioning and insertion devices installation. However, the instability is still an obvious problem to the beam quality and the deviation amplification factor of the magnets to the electron beam plays an important contribution role. Since the magnets are firmly installed on the girders and the contribution is mainly transferred from the girder vibration. This study tries to eliminate the obvious vibration frequencies amplitude exerted on the girder from outside sources such as the utility system with the PZT actuators installed on the locking wedges between girder and pedestals. By the amplitude and inverse phase searching iteration, some vibration frequency peaks in phase domain can be eliminated and the instability is also reduced.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE11

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paper received ※ 11 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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MOPE13

The 20m/s CERN Fast Vacuum Wire Scanner Conceptual Design and Implementation

vacuum, controls, feedback, ISOL

29

J. Herranz
Proactive Research and Development, Barcelona, Spain
W. Andreazza, N. Chritin, B. Dehning, J. Emery, D. Gudkov, P. Magagnin, S. Samuelsson, J.L. Sirvent, R. Veness
CERN, Geneva, Switzerland
A. Barjau
Universitat Politécnica de Catalunya, Barcelona, Spain

In the next years the luminosity of the LHC will be significantly increased. Therefore a much higher accuracy of beam profile measurement than actually achievable by the current wire scanner is required. The new performance demands a wire travelling speed up to 20 m/s and a position measurement accuracy of the order of 1 µm. In order to minimize the error source of the wire position measurement, a challenging concept has been developed which consists of the placement of the motor rotor and the angular position sensor in vacuum. The implementation of this new concept requires the use of a magnetic brake, hybrid vacuum bearings, the design and production of very thin (<0.5mm) wall vacuum chamber regions and the production of titanium components by 3D additive technologies. The implementation of this new concept has required different optimization processes as the structural optimization under dynamic load of the most critical rotating elements or the optimization of the control system and the motion pattern. This contribution gives an overview of the new device design and shows the different technical solution applied to develop the new concept in a successful way.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE13

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paper received ※ 10 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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MOPE15

Cam Mover Alignment System Positioning with Wire Position Sensor Feedback for CLIC

target, alignment, controls, electron

32

J. Kemppinen, Z.S. Kostka, H. Mainaud Durand
CERN, Geneva, Switzerland
J. Kemppinen
ETH, Zurich, Switzerland

Compact Linear Collider (CLIC) is a study of an electron-positron collider with nominal energy of 3 TeV and luminosity of 2·10³⁴ cm^-2·s^-1. The luminosity goal leads to stringent alignment requirements for single quadrupole magnets. Vertical and lateral offset deviations with regards to a given orbit reference in both ends of a quadrupole shall be below 1 µm and quadrupole roll deviation shall be below 100 µrad. Translation in the direction of particle beam is not controlled but mechanically locked. A parallel kinematic platform based on cam movers was chosen as system for detailed studies. Earlier studies have shown that cam movers can reach the CLIC requirements through an iterative process. The paper presents new modular off-the-shelf control electronics and software including three optional positioning algorithms based on iterations as well as a more advanced algorithm which can reach target position in one movement. The advanced algorithm reads wire position sensors (WPS), calculates quadrupole orientation based on the readings and updates the remaining trajectory during motion. All of the optional positioning methods reach the CLIC positioning requirements within minutes.

Poster MOPE15 [0.425 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE15

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paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017

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MOPE16

Development of the RIXS Manipulator

vacuum, scattering, operation

35

H. Jöhri, C. Hess, L. Nue, L. Patthey, T. Schmitt
PSI, Villigen PSI, Switzerland

The RIXS Manipulator (RIXS = Resonant Inelastic X-ray Scattering) is a further development of the Carving Manipulator. The carving manipulator has six independent degree of freedom. (Three translations and three rotations). All three rotations are exactly in the middle of the sample surface. The head of the manipulator is in UHV and the sample can be cooled down to 10K. For the RIXS manipulator there is a new requirement to have a field of view from 0-180°. There are mainly two parts in the carving manipulator that set the probe in the shadow of the beam at small angles. - A bellow - The bearings To solve these problems we shifted the bellow behind the pivot point. This give some strange movements of the bellows and we had to analyse this in a separate test installation. For the bearings, we developed a goniometer bearing with ceramic bearing shells. Meanwhile the RIXS manipulator is implemented and in routine operation

Poster MOPE16 [1.357 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE16

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paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017

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MOPE17

OCTOGLIDE - Table Positioning Device for Diffraction Applications

controls, software, GUI, synchrotron

38

G. Olea, N. Huber
HUBER Diffraktiontechnik GmbH&Co.KG, Rimsting, Germany

A new Table Positioning Device(TPD) for high precision and heavy load manipulations has been developed. Conceived as an alternative to the precision hexapods it fulfils the gap of sample (and/or, instruments) positioning in small (height) available working spaces of synchrotron Diffractometers (Dm). The concept is based on a Redundant Parallel Kinematic Structure (Rd-PKS) with four (4) legs having 2 dof active joints (actuators). In this Proof of Functionality (PoF) step, a stacked solution has been adopted for actuators design using the existent XY translation Positioning Units (Pu). The symmetrically modular 6-4(PP)PS precision mechanism - OCTOGLIDE(OG) having eight (8) gliding actuators (P) is implying also a pair of wedges - Elevation (El) and socket/ball - Guiding (G) Pu, as passive joints (P and S) forming one of the Positioning modules (Pm). Spatial positions can be reached without any singularities and planar motions along/around X or Y axis are performed very intuitively with some of the actuators (decoupled) motion. The first tests of the prototype are revealing both, high accuracy (straightness, flatness, etc) and stiffness capabilities.
* Merlet JP, Parallel robots, Springer, 2006

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE17

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paper received ※ 09 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017

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MOPE18

Real-Time Motor Control System for Beamlines

controls, FPGA, hardware, real-time

41

C.F. Chang
NSRRC, Hsinchu, Taiwan

To improve the stability and accuracy of motor control system for beamlines, the beamlines with motor adjustment mechanism collocate with the real-time firmware motor control system through the high-definition motor mechanism. Because the real-time motor control system does not need to be connected with the computer for a long time, it improves the speed, stability and accuracy of closed loop operation and thus promotes the controlling ability of motor. As a result, the real-time motor control system will improve the stability and accuracy of the entire motor control system with beamlines.

Poster MOPE18 [2.797 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE18

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paper received ※ 09 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017

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MOPE19

Mechatronics Concepts for the New High-Dynamics DCM for Sirius

controls, synchrotron, alignment, resonance

44

R.R. Geraldes, R.M. Caliari, G.B.Z.L. Moreno
LNLS, Campinas, Brazil
M.J.C. Ronde, T.A.M. Ruijl, R.M. Schneider
MI-Partners, Eindhoven, The Netherlands

Funding: Brazilian Ministry of Science, Technology, Innovation and Communication
The monochromator is known to be one of the most critical optical elements of a synchrotron beamline. The new 4th generation machines, with emittances in the range of order of 100 pm rad, require even higher stability performances, in spite of the still conflicting factors such as high power loads, power load variation, and vibration sources. A new high-dynamics DCM is under development at LNLS for the future X-ray undulator and superbend beamlines of Sirius. Aiming at inter-crystal stability of a few tens of nrad and considering the limitations of the current DCM implementations, several aspects of DCM engineering are being revisited. The system concept is chosen such that a control bandwidth in the order of 200 to 300 Hz can be achieved. This requires well-designed system dynamics, which can be realized by applying a fundamentally different architecture than that used in common DCM designs, based on principles used in ultra-precision systems for semiconductor manufacturing. As a result, known disturbances can be attenuated or suppressed, and internally excited modes can be effectively handled. The mechatronics concepts and analyses, including the metrological details, are shown.

Poster MOPE19 [5.423 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE19

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paper received ※ 11 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017

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MOPE20

Ultra Stiffness And Ultra Low Wawing LM Guide

GUI, experiment, ECR

48

M. Miret
THK GmbH Sucursal en España, Badalona, Spain

The abstract porpoise is explain how is providing the LM Guide for high performance machine by realizing the waving of Nano-level and achieves super-low waving and ultra-high rigidity by adopting 8 rows of raceways in the LM Guide. These models adopt (1) 8 rows of raceways, (2) small-diameter balls and (3) super-long blocks, in order to realize super-low waving and ultra-high rigidity that surpass the conventional LM Guide. With this approach, the number of effective balls is substantially increased, and the amplitude of the rolling element in motion is minimized. The new models realize super-low waving comparable to hydrostatic guides. In addition, the deformation of the ball is minimized to achieve ultra-high rigidity that surpasses even roller guides. Primary applications Super-precision processing machines/High-precision machining centre/Lathe/Surface grinder/Semiconductor manufacturing equipment/FPD manufacturing machines/High-performance measuring machines. [Waving evaluation] The waving values are approximately 1/10 of that (100 to 300 nm) of conventional ordinary LM Guides.

Poster MOPE20 [1.600 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE20

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paper received ※ 07 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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MOPE22

Mechanical Design of the MID Split-and-Delay Line at the European XFEL

FEL, alignment, controls, laser

50

B. Friedrich, S. Eisebitt, T. Noll
MBI, Berlin, Germany
S. Eisebitt, B. Friedrich
Technische Universität Berlin, Berlin, Germany
W. Lu, T. Roth
European XFEL, Schenefeld, Germany
A. Madsen
XFEL. EU, Hamburg, Germany

A new split-and-delay line (SDL) is under development for the Materials Imaging and Dynamics (MID) end station at the European XFEL.* The device utilises Bragg reflection to provide pairs of X-ray pulses with an energy of (5 - 10) keV and a continuously tunable time delay of (-10 - 800) ps - thus allowing zero-crossing of the time delay. The mechanical concept features separate positioning stages for each optical element. Those are based on a serial combination of coarse motion axes and a fine alignment 6 DoF Cartesian parallel kinematics**. That allows to meet the contradictory demands of a fast long-range travel of up to 1000 mm and in the same time a precise alignment with a resolution in the nanometer range. Multiple laser interferometers monitor the position of the optical elements and allow an active control of their alignment. All optical elements and mechanics will be installed inside an UHV chamber, including the interferometer and about 100 stepper motors. With this paper we present the mechanical design for the SDL. It will additionally show the design of a prototype of a positioning stage which allows extensive testing of the implemented concepts and techniques.
* A. Madsen et al., Technical Design Report: Scientific Instrument MID, 2013.
** T. Noll et al., Parallel kinematics for nanoscale Cartesian motions, Precision Engineering, vol. 33, no. 3, 2009.

Poster MOPE22 [4.691 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE22

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paper received ※ 11 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017

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MOPE23

An Assembling Calibration Method of XBPM Diamond Blades in TPS

survey, alignment, network, photon

54

H.C. Ho, M.L. Chen, K.H. Hsu, D.-G. Huang, C.K. Kuan, W.Y. Lai, C.J. Lin, S.Y. Perng, T.C. Tseng, H.S. Wang
NSRRC, Hsinchu, Taiwan

Diamond blade type X-ray Beam Position Monitors (XBPM) were adopted to monitor photon position at the beamline front-end in Taiwan Photon Source (TPS). Due to the thin thickness (125um) and fragile characteristic, the assembling precision of the diamond blades are hard to measure and influence the accuracy of monitor. A non-contact method was thus developed by using a led laser with telecentric objective lens and a CCD-array to calibrate the diamond blades assembling configuration within micrometer accuracy. According to the measurement results, XBPM can be correlated to four fiducial points for survey network. This paper describes this method and calibrating results in detail.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE23

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paper received ※ 10 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017

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MOPE24

The Precision Adjustment Holder for Montel Mirrors

focusing, optics, alignment, photon

57

B.Y. Chen, S.H. Chang, H.Y. Chen, C.Y. Lee, B.H. Lin, M.T. Tang, S.C. Tseng, J.X. Wu, G.C. Yin
NSRRC, Hsinchu, Taiwan
M. Hong
National Taiwan University, Taipei, Taiwan
J.R. Kwo
NTHU, Hsinchu, Taiwan

The focusing of X-ray nanoprobe at TPS relay upon the special designed Montel mirrors and its adjustment holder. The holder includes two major parts: (1) fundamental-position alignment part and (2) relative-position adjustment part. The fundamental-position alignment part has the ability to adjust the two mirrors together in 6 DOF., such as X, Y, Z, pitch, roll, and yaw. These translation stages have several-tens mm travel range and nm resolution, while the rotational stages have 40 mrad azimuthal angular range and 0.1~0.01 µrad resolution. The relative-position adjustment part can further adjust the two mirrors to minimize the focal spot. During the pre-alignment process, one of the mirrors can be manual adjusted by micrometer heads in three translation directions with several mm travel range and micro-meters resolution. These micrometer heads also provide this mirror three rotational degree of freedoms with sub-mrad resolution. For the further alignment in vacuum, the additional four piezo-motor actuators can precisely adjust the other Montel mirror in the Y and Z direction with several nm resolution, and its pitch and roll with 1 urad and 0.05 urad resolution, respectively.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE24

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paper received ※ 14 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017

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MOPE26

Front End Photon Shutter Water Leak to Vacuum at the Canadian Light Source

photon, operation, vacuum, cavity

60

G.R. Henneberg, M.J.P. Adam, G.R. Barkway
CLS, Saskatoon, Saskatchewan, Canada

In early July 2016 CLS experienced a water to vacuum leak in the storage ring. The source of the leak was a pin hole in the absorbing surface of Photon Shutter 1 in the front end of the HXMA Beamline. The leak was caused by high velocity cooling water erosion of the internal cooling water path of the copper photon shutter block. The poster will present the root cause analysis of the leak, implications for other identical photon shutters and currently in service and the current remedial action plan.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE26

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paper received ※ 11 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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MOPE27

The Influences of Material Properties to Micro Damages on Vacuum Chamber CF Flanges

vacuum, FEL, simulation, diagnostics

63

S. Vilcins, M. Holz, M. Lemke, D. Nölle, Ch. Wiebers
DESY, Hamburg, Germany

The European-XFEL, a 3.3 km long X-Ray laser facility, powered by a 17.5 GeV superconducting linear accelerator, is located at DESY in Hamburg [1]. For the diagnostics ultra-high vacuum components with high mechanical precision and strict requirements on particle cleanliness had to be developed, designed and produced. For the screen system of the facility, enabling to observe the size and shape of the electron beam, massive vessels, precisely milled out of stainless steel blocks 1.4435 (316L) have been produced. For these chambers all flange-connections are milled into these blocks. This paper will report onμdamages in these integrated knife edges and will present simulations of the damage mechanisms. It will also describe the influences of material properties of two different stainless steel brands, effects on the ¿knife edge¿ due to the penetration into the gaskets as well as the non-elastic deformation of the sealing area. The dependence of tightening forces under special conditions, like the very clean conditions in particle free applications due to the non-lubricated conditions will be reported. A ¿cooking recipe¿ to avoid suchμdamages will be given.

Poster MOPE27 [0.187 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE27

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paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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MOPE28

Vacuum System of SESAME Storage Ring

vacuum, storage-ring, simulation, injection

71

M.A. Al-Najdawi, H. Al-Mohammad, E. Huttel, F. Makahleh, M.M. Shehab
SESAME, Allan, Jordan

Funding: N/A
SESAME* is a third-generation synchrotron light source under construction near Amman (Jordan). The storage ring has 16 Dipole arc chambers, 8 short and 8 long straight chambers. The general layout and detailed design of the vacuum chambers, crotch absorbers, RF bellows, injection and RF sections will be presented in this contribution, also the testing of the chambers prototype, bake out process and final installation.
* Synchrotron-light for Experimental Science and Applications in the Middle East

Poster MOPE28 [2.696 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE28

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paper received ※ 10 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017

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MOPE29

Vacuum System of HLS-II Storage Ring

storage-ring, vacuum, synchrotron, MMI

74

Y. Wang, L. Fan, Y.Z. Hong, X.T. Pei, W. Wei, B. Zhang
USTC/NSRL, Hefei, Anhui, People’s Republic of China

Hefei Light Source (HLS) has been operated for more than twenty-five years. From 2010 to 2014, the upgrading project of HLS has been carried out and the new machine is called HLS-II. The main improvement include: the emittance is reduced to 40 nm·rad, 3 new insertion devices (2 IVU and 1 EPU undulators) are added and the injection energy increases to 800 MeV. The typical life time is 300 mins at 300mA, 800 MeV. The average pressure of static and dynamic vacuum are below 2·10⁸ Pa and 1.2·10^-7 Pa respectively. The design, installing and commissioning of the vacuum system of the storage ring are detailed stated in in this paper.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE29

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paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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MOPE30

The Development of CuCrZr High Heat Load Absorber in TPS

vacuum, synchrotron, radiation, synchrotron-radiation

77

I.C. Sheng, C.K. Chan, C.-C. Chang, C. Shueh, L.H. Wu
NSRRC, Hsinchu, Taiwan
S.K. Sharma
BNL, Upton, Long Island, New York, USA

TPS project in National Synchrotron Radiation Research Center (NSRRC) in Taiwan has reached 500mA design goal. Several upgrades and design enhancements is also under development. CuCrZr copper alloy material has been selected to examine its UHV compatibility, machinability and high heat load sustainability. Most importantly, the absorber is made entirely by CuCrZr (including two end flanges) and installed in the mid-section of double minimum of tandem EPU48 undulators to shadow beam miss-steered synchrotron radiation from upstream EPU. Both the result and fabrication time (without brazing) are promising.

Poster MOPE30 [0.547 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE30

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paper received ※ 06 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017

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MOPE31

Dynamic Performance of a Support System for BBA Components in SXFEL

FEL, undulator, electron, quadrupole

80

F. Gao, R.B. Deng, Y.X. Dong, X. Hu, Z. Jiang, S. Sun, L. Wang, Y.M. Wen
SINAP, Shanghai, People’s Republic of China

The electron beam orbit stability is very important for the Free Electron Laser (FEL) facility. The high beam position stability requirement results in the high position stability for the FEL key components, such as quadruple magnet (Q) and beam position monitor (BPM). This work focus on the research of the dynamic performance of a mechanical support system composed of mechanical supports - including sheets and adjustments - and a granite block mounted on them. It will be applied for the beam based alignment (BBA) Q magnet and BPM for the Soft X-ray FEL project (SXFEL). The Finite-element -FE- calculations of the model characteristics were carried out to guide the subsequent tests. The test results show that the support system can meet the requirement of the SXFEL project.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE31

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paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017

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MOPE32

Preliminary Design and Analysis of the FODO Module Support System for the APS-U Storage Ring

storage-ring, alignment, experiment, damping

83

J. Nudell, H. Cease, J.T. Collins, Z. Liu, C.A. Preissner
ANL, Argonne, Illinois, USA

Funding: Work supported by: Argonne is managed by UChicago Argonne, LLC, for the U.S. Department of Energy under con-tract DE-AC02-06CH11357.
The most technically challenging module of the planned APS Upgrade (APS-U) project is the Focusing-Defocusing (FODO) module. The girder for the FODO must support a ~6m long string of three Q-bend and four quadrupole mag-nets. The challenges which emanate from retrofitting the existing APS tunnel with new hardware along with the stringent requirements for alignment and vibrational stability * necessitate a unique engineering solution for the magnet support system. FEA is heavily relied upon in order to create an optimized solution and reduce the number of design iterations required to meet specifications. The prototype FODO magnet support design is presented from the ground up, along with FEA justification and the expected vibrational performance of the module.
* Glenn Decker (2014) Design Study of an MBA Lattice for the Advanced Photon Source, Synchrotron Radiation News, 27:6, 13-17, DOI: 10.1080/08940886.2014.970932

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE32

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paper received ※ 09 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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MOPE34

Preliminary Design of the Magnet Support and Alignment Systems for the Aps-U Storage Ring

alignment, storage-ring, lattice, MMI

87

J.T. Collins, H. Cease, S.J. Izzo, Z. Liu, J. Nudell, C.A. Preissner
ANL, Argonne, Illinois, USA

Funding: Work supported by: Argonne is managed by UChicago Argonne, LLC, for the U.S. Department of Energy under con-tract DE-AC02-06CH11357.
As part of the Advanced Photon Source Upgrade pro-ject (APS-U), the storage ring will be upgraded to a multibend achromat (MBA) lattice [1]. This upgrade will provide dramatically enhanced hard x-ray brightness and coherent flux to beamline experiments in comparison to the present machine. The accelerator physics require-ments for the upgrade impose very stringent alignment, assembly and installation tolerances and tight vibrational tolerances on the magnet support and alignment system designs. The short installation duration dictates a need for transporting groups of fully assembled magnet mod-ules into the storage ring enclosure while preserving magnet-to-magnet alignment. The current magnet sup-port and alignment systems preliminary design status for the APS-U storage ring will be presented along with an overview of the R&D program required to validate design performance. Magnet module transportation and installa-tion logistics will also be discussed.
* Glenn Decker (2014) Design Study of an MBA Lattice for the Advanced Photon Source, Synchrotron Radiation News, 27:6, 13-17, DOI: 10.1080/08940886.2014.970932

Poster MOPE34 [0.975 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE34

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paper received ※ 07 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017

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MOPE37

Diamond Multi-Bend Achromats for Low Emittance and New Insertion Devices

vacuum, alignment, emittance, storage-ring

90

J. Kay, N.P. Hammond
DLS, Oxfordshire, United Kingdom

Diamond Light Source is pioneering the move to a Multi Bend Achromat storage ring lattice for low emittance combined with the creation of new straight sections available for Insertion Devices (ID). Diamond is at an advanced stage of replacing one Double Bend Achromat (DBA) cell of the existing storage ring with a Double Double Bend Achromat (DDBA). The DDBA cell which is to be installed in Autumn 2016 has 4 dipoles and has been designed with a new straight section in the middle. This allows a new ID source point to be installed on an existing Bending Magnet port in the shield wall for a new micro-focus protein crystallography beamline called VMX-m. This same principle will be applied to the proposed Diamond II project which will be based on a Double Triple Bend Achromat with 6 dipoles per cell achieving even lower emittance whilst providing many more IDs. This paper describes the engineering challenges of these projects.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE37

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paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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MOPE38

Milliprobe Scanner Station

detector, alignment, synchrotron, controls

93

J. Divitcos, M. De Jonge, D. Howard, J. McKinlay
ANSTO, Menai, New South Wales, Australia

The research team at the Commonwealth Scientific & Industrial Research Organisation, Clayton CSIRO) have developed a high energy detector referred to as the Maia. The rapid scanning, high resolution detector offers technological advances, including non-invasive technical study of highly valued artworks. A vital application of the Maia detector is scanning x-ray fluorescence microscopy for obtaining the elemental composition of a large number of materials. The innovative detector allows connection between scientists & art communities to increase their understanding of historical artworks, broadening the field of authentication and potentially aiding the fight against art forgery as well as historical information. We have designed a new dedicated station that offers improvements in high stability, motion control and mounting. It is designed to support & scan various samples in size as well as shape powered by X & Y stages. A slide & hold clamping concept has been implemented which provides easy & rapid assembling of samples. This arrangement provides excellent interchangeability, supporting a variety of planar & non-planar samples for scanning.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE38

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paper received ※ 07 September 2016 paper accepted ※ 29 September 2016 issue date ※ 22 June 2017

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MOPE40

Designing the Flash II Photon Diagnostic Beamline and Components

diagnostics, vacuum, experiment, photon

96

D. Meissner, M. Brachmanski, M. Hesse, U. Jastrow, M. Kuhlmann, H. Mahn, F. Marutzky, E. Plönjes-Palm, M. Röhling, H. Schulte-Schrepping, K.I. Tiedtke, R. Treusch
DESY, Hamburg, Germany

From 2013 to 2016 the free electron laser FLASH at DESY in Hamburg, Germany was upgraded with a second undulator line, photon diagnostic line, beam distribution and experimental hall connected to the same linear accelerator. This paper shows the layout of the photon diagnostic section and an overview of the civil engineering challenges. The mechanical design of selected components, e.g. vacuum components, diagnostic equipment and safety related components is presented.

Poster MOPE40 [1.081 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE40

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paper received ※ 08 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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MOPE41

Design and Construction of a PW Experimental System of HV Chamber Adaptable, Modular and Stable

laser, vacuum, experiment, resonance

99

A. Carballedo, C. Colldelram, J.R. García, R. Monge, L. Nikitina
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
J. Hernandez-Toro, L. Roso
CLPU, Villamayor, Spain

Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no 654148 Laserlab-Europe
In the recent years, the number of high power lasers devoted to particle acceleration has increased in Europe. Additionally to this, some synchrotrons and accelerators are integrating these lasers in its lines, increasing the scientific synergies. The HP laser must be transported in HV. The use of HV also permits good cleanliness in the optical set up. As addition, is necessary to create an adaptable and modular design where several chambers could be assembled together. One additional constrain is the stability. A new model of HV chambers is presented. These consist in a frame where the walls are exchangeable panels, which make easier the introduction of a new configuration of ports. The system was designed as construction blocks. For a proper connection of the chambers a new interior fixation and pushers system was designed. Thanks to this, coupling new HV chambers, the volume total can be also easily modified. Finally, a third generation decoupled system is integrated inside, consisting of a stable breadboard, this supported by six columns that implement a preloaded kinematical mount, providing both an outstanding stability and a fine regulation (1st RM: 77Hz).

Poster MOPE41 [0.938 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE41

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paper received ※ 09 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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MOPE42

Experimental and Numerical Study of the ALBA LINAC Cooling System

linac, experiment, operation, cavity

102

M. Ferrater
UPC, Barcelona, Spain
J.J. Casas, C. Colldelram, D. Lanaia, R. Muñoz Horta, F. Pérez, M. Quispe
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

This work investigates experimentally and numerically the performance of the ALBA LINAC cooling system. The main objective is to enhance the hydraulic system in order to significantly improve its thermal and water flow stability. In normal operation some problems have been identified that affect the performance of the LINAC: flowrate below the nominal values and water flow decreasing in time. The cooling subsystems have been experimentally characterized in terms of the pressure drop and flowrate. The measurements were taken using a portable hydraulic unit made at ALBA as well as a set of ultrasonic flowmeters. For the numerical studies the cooling network has been simulated using the software Pipe Flow Expert. The experimental results have shown that a number of components are too restrictive. In some cases the possibility to increase the flowrate is limited. The numerical results show that the velocity magnitude is inadequate in some places, producing air bubble entrapment, high pressure drop at pipes and insufficient flow. Based on this study several modifications are presented in order to raise the nominal flow and to adequate the water flow velocities between 0.5 and 3 m/s.

Poster MOPE42 [1.073 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE42

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paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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MOPE43

Hydraulic Failure Caused by Air in Pipelines of the Experimental Area Ring of ALBA Synchrotron Light Source: Research, Simulations and Solutions

experiment, controls, simulation, operation

105

L. Macià
UPC, Barcelona, Spain
J.J. Casas, C. Colldelram, M. Quispe
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

After five years in operation of the ALBA Synchrotron Light Source a hydraulic failure caused a maximum decreasing of water flow about 40% of its nominal value, hampering the refrigeration of the local components. The problem was mainly caused by the air accumulated in pipes due to very low velocities of water flow. A literature review was conducted about the minimum water flow velocity for removing air in pipelines as design criteria. The aim of this work is to develop hydraulic solutions in order to achieve the minimum flowrate in pipelines of the Experimental Area (EA) ring. In the short term it is proposed to install a controlled bypass in the EA. A numerical simulation using the software Pipe Flow Expert has been implemented in order to determine the requirements of the bypass that works under different conditions to assure a minimum flowrate all along the ring. The velocity map in EA ring is simulated for different scenarios: 180 and 360 degrees distribution for both clockwise and anticlockwise rotation. For the long term a design of pipes with variable cross section is proposed which optimizes the flow velocity magnitude in EA ring in agreement with the design criteria.

Poster MOPE43 [1.347 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE43

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paper received ※ 10 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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TUAA01

Precision Mechanical Design of a Miniature Dynamic Mirror Bender for the SSRF Beamline Upgrade Project

controls, SRF, synchrotron-radiation, synchrotron

108

D. Shu, J.W.J. Anton, S.P. Kearney
ANL, Argonne, Illinois, USA
J.W.J. Anton
University of Illinois at Chicago, Chicago, USA
A. Li, C. Mao, Y. Pan
SINAP, Shanghai, People’s Republic of China

Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357 and Argonne SPP project 85·10⁷⁷. Work at SINAP supported by NNSF of China No. U1332120.
Dynamic mirror benders which enable high precision figuring of planar substrates for x-ray focusing are widely used as conventional optical equipment in various synchrotron radiation beamlines. Especially, in cases for x-ray focusing optics coated with multilayers in a Kirkpatrick-Baez configuration as the final focusing elements immediately upstream of the sample, the dynamic mirror benders provide high precision figuring to allow the mirror figure to be tuned to optimize the focusing at different incidence angles to cover a wide energy range *. Recently, collaboration between Argonne National Laboratory and Shanghai Institute of Applied Physics (SINAP) has produced designs of a new miniature dynamic mirror bender with Argonne’s laminar nanopositioning flexure technique ** for beamline upgrade project at the Shanghai Synchrotron Radiation Facility (SSRF). The mechanical design and finite element analyses of the miniature dynamic mirror bender, as well as its initial mechanical test results with laser interferometer are described in this paper.
* R. Barrett, J. Härtwig, C. Morawe et al, Synchrotron Radiation News, 23, No.1, 36-42(2010)
** U.S. Patent granted No. 6,984, 335, D. Shu, T. S. Toellner, and E. E. Alp, 2006.

Slides TUAA01 [7.411 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUAA01

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paper received ※ 10 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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TUAA02

Earth, Wind, and Fire: The New Fast Scanning Velociprobe

controls, optics, GUI, coupling

112

C.A. Preissner, J. Deng, C. Jacobsen, B. Lai, F.S. Marin, J. Maser, S.T. Mashrafi, C. Roehrig, S. Sullivan, S. Vogt
ANL, Argonne, Illinois, USA

Funding: Argonne is managed by UChicago Argonne, LLC, for the U.S. Department of Energy under contract DE-AC02-06CH11357.
The Advanced Photon Source Upgrade (APS-U) project will include a suite of new beam-lines. In preparation for this, a team at the APS is developing an X-ray microscope with a novel granite (Earth), air bearing (Wind) supported stage to take advantage of the two orders of magnitude increased coherent flux (Fire) that will be available with the APS-U. The instrument will be able to operate as a scanning probe for fluorescence microscopy and as a ptychoprobe for the ultimate in spatial resolution. Both are combined with tomography. The goals for the instrument while operating at the current APS are to demonstrate fast scanning of large samples at high resolution and ptychography at the highest resolution (speed and resolution limited by available flux). This presentation will discuss the unique mechanics, interferometry scheme, the advanced scanning control, and instrument integration.

Slides TUAA02 [25.518 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUAA02

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paper received ※ 10 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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TUBA01

The Design of a Precision Mechanical Assembly for a Hard X-ray Polarizer

experiment, simulation, controls, synchrotron-radiation

116

S.P. Kearney, D. Shu, T.S. Toellner
ANL, Argonne, Illinois, USA

Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357
Hard x-ray polarisers are commonly applied in synchrotron radiation research to produce photons in a pure polarization state, and as polarization filters to analyse the photon’s polarization state after their interaction with a sample medium. We present the design of a mechanical assembly suitable for a hard X-ray polariser that requires multiple degrees of freedom with the base stage capable of handling at least 2-3 kg loads. The intermediary stages (roll, yaw, and translation directions) consist of commercially available tip/tilt and translational stages (Kohzu Precision Co., LTD). However, the requirements of the pitch stage are much more demanding and require a custom-designed flexure-based rotation stage. The design and analysis of this flexure-based rotation stage will be discussed in this study. This will include FEA analysis of the dynamic response and rotation range capabilities which will then be compared to mechanical performance test results using laser interferometers and accelerometer sensors.

Slides TUBA01 [1.586 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUBA01

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paper received ※ 09 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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TUBA03

The Generic Mirror Chamber for the European XFEL

FEL, alignment, optics, software

121

T. Noll
BESSY GmbH, Berlin, Germany
H. Sinn, A. Trapp
XFEL. EU, Hamburg, Germany

For the high demanding requirements of the beam-lines of the European XFEL [*] new mirror chambers were developed, designed and tested. A prototype contains the main features of all needed ten units which are tested extensively. The concept of the mirror chamber is a further development of our Cartesian parallel kinematics for X-ray optics in the UHV [**]. The stiffness and vibration behaviour were further improved and the position resolution was increased compared to earlier implementations at Bessy and Flash. For that the drives were redesigned and now feature a stroke of 100 mm with nanometer resolution.
* H. Sinn, TDR: X-Ray Optics and Beam Transport, December 2012, XFEL. EU TR-2012-006 doi:10.3204
** T. Noll, Parallel kinematics for nanoscale Car-tesian motions, Precision Engineering Vol.33/3 Pg.291

Slides TUBA03 [38.484 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUBA03

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paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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TUBA04

Mechanical Design and Development of Compact Linear Nanopositioning Flexure Stages with Centimeter-Level Travel Range and Nanometer-Level Resolution

GUI, controls, laser, photon

124

D. Shu, J.W.J. Anton, S.P. Kearney, B. Lai, W. Liu, J. Maser, C. Roehrig, J.Z. Tischler
ANL, Argonne, Illinois, USA
J.W.J. Anton
University of Illinois at Chicago, Chicago, USA

Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357.
Nanopositioning techniques present an important capability to support the state-of-the-art synchrotron radiation instrumentation research for the APS operations and upgrade project. To overcome the performance limitations of precision ball-bearing-based or roller-bearing-based linear stage systems, two compact linear nanopositiioning flexure stages have been designed and developed at the APS with centimeter-level travel range and nanometer-level resolution for x-ray experimental applications. The APS T8-54 linear flexure stage is designed to perform a precision wire scan as a differential aperture for the 3-D diffraction microscope at the APS sector 34, and the APS T8-56 linear flexure stage is designed for a horizontal sample scanning stage for a hard x-ray microscope at the APS sector 2. Both linear flexure stages are using a similar improved deformation compensated linear guiding mechanism which was developed initially at the APS for the T8-52 flexural linear stage *. The mechanical design and finite element analyses of the APS T8-54 and T8-56 flexural stages, as well as its initial mechanical test results with laser interferometer are described in this paper.
* U.S. Patent granted No. 8,957, 567, D. Shu, S. Kearney, and C. Preissner, 2015.

Slides TUBA04 [7.057 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUBA04

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paper received ※ 10 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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TUCA02

Structural Dynamic Modelling and Measurement of SwissFEL Bunch Compressor

GUI, FEL, acceleration, damping

128

X. Wang, H. Jöhri, F. Löhl, M. Pedrozzi, T. Stapf
PSI, Villigen PSI, Switzerland

Magnetic chicanes are used in accelerator facilities to longitudinally compress the accelerated particle bunches. The second compression chicane (BC2) of SwissFEL consists of four dipole magnets bending the beam on the horizontal plane along a C-shaped orbit and has a total length of 17 m. The position of the two central dipoles can be continuously adjusted to achieve the required transverse offset in order to realize a wide range of compression schemes. To ensure the requires mechanical stability of the accelerator components sitting on the long and movable steel girder (7.7 m), it is essential to design a stiff support structure with high eigen frequencies. In the design stage, displacement frequency responses are calculated in a modal based linear dynamic analysis using finite element method to ensure vibration amplitude below 1 micrometer. Special considerations are given to the modelling of linear guide systems, as they introduce nonlinear support conditions and need to be adequately simplified in the calculation. After completing the BC2 assembly, vibration measurements were performed. Finally, the validation of the numerical model by measurement results will be presented.

Slides TUCA02 [3.884 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUCA02

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paper received ※ 10 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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TUCA03

Estimation of the Temperature Fluctuations Harshness Regarding Stability of Structures in the Nanometer Range

experiment, ECR, simulation, operation

133

N. Jobert, F. Alves, S.K. Kubsky
SOLEIL, Gif-sur-Yvette, France

Thermally induced distortions are a key contributor to the overall positional and pointing performance of high-stability systems. Though stability scales with temperature fluctuations, there is some hidden complexity is the subject. Firstly, not all temperature oscillations will distort the structure: fast variations will hardly propagate into the structure, little change in overall dimensions but primarily pointing errors. Conversely, slow variations will result in quasi uniform temperature fields that change dimensions, hence mainly positional errors. Secondly, there is randomness in temperature fluctuations which obscures the actual severity of a given environment: randomness occurs timewise, but also space-wise. For highly stable situations, random part of the temperature field becomes prominent, and discarding this component becomes questionable. No harshness indicator exists that could help quantifying the actual severity of a given thermal environment. It is the objective of this paper to provide some insight on the matter, and propose a simple yet efficient numerical method allowing the evaluation of actual structural response to any realistic thermal environment.

Slides TUCA03 [7.080 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUCA03

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paper received ※ 01 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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TUCA05

The New High Dynamics DCM for Sirius

controls, synchrotron, GUI, feedback

141

R.R. Geraldes, R.M. Caliari, G.B.Z.L. Moreno, L. Sanfelici, M. Saveri Silva, N.M. Souza Neto, H.C.N. Tolentino, H. Westfahl Jr.
LNLS, Campinas, Brazil
T.A.M. Ruijl, R.M. Schneider
MI-Partners, Eindhoven, The Netherlands

Funding: Brazilian Ministry of Science, Technology, Innovation and Communication
The monochromator is known to be one of the most critical optical elements of a synchrotron beamline, since it directly affects the beam quality with respect to energy and position. The new 4th generation machines, with emittances in the range of order of 100 pm rad, require even higher stability performances, in spite of the still conflicting factors such as high power loads, power load variation, and vibration sources. A new high-dynamics DCM (Double Crystal Monochromator) is under development at the Brazilian Synchrotron Light Laboratory for the future X-ray undulator and superbend beamlines of Sirius. Aiming at an inter-crystal stability of a few tens of nrad (even during the Bragg angle motion for flyscans) and considering the limitations of current DCM implementations, several aspects of the DCM engineering are being revisited. In order to achieve a highly repeatable dynamic system, with a servocontrol bandwidth in the range of 200 Hz to 300 Hz, solutions are proposed for a few topics, including: actuators and guides, metrology and feedback, LN2 indirect cooling, crystal clamping, thermal management and shielding. The concept of this high-dynamics DCM will be presented.

Slides TUCA05 [2.254 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUCA05

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paper received ※ 11 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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TUCA06

The Girders System for the New ESRF Storage Ring

alignment, SRF, storage-ring, resonance

147

F. Cianciosi, T. Brochard, Y. Dabin, L. Goirand, M. Lesourd, P. Marion, L. Zhang
ESRF, Grenoble, France

The ESRF is proceeding with the design and procurement of its new low emittance storage ring (Extremely Brilliant Source project). This completely new storage ring requires a high performance support system, providing high stability (first resonance frequency about 50Hz) and a precise alignment capability (50µm, manual in transverse direction and motorized in the vertical one). In order to meet these requirements we decided to support the magnets of each of the 32 cells of the synchrotron with four identical girders that was considered the best compromise between cost, complexity and performances. Each of the resulting 128 girders is 5.1m long, carries about seven tons of magnets, and its weight including fixed basement and adjusting system is six tons. The adjustment system relies on modified commercial wedges; their stiffness was evaluated through laboratory tests. The FEA calculations carried out to optimize the design will be presented, together with the results obtained on a complete prototype girder system which was built and extensively tested and confirmed the modal calculations.

Slides TUCA06 [17.229 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUCA06

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paper received ※ 07 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017

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TUPE01

DMM Thermal Mechanical Design

optics, detector, operation, experiment

152

J.H. Kelly
DLS, Oxfordshire, United Kingdom

A Double Multilayer Monochromator (DMM) was designed in-house for the VMXi beamline. Thermal mechanical finite element analysis was performed to design a novel optic geometry, employing In/Ga eutectic cooling. The integration of a DMM into the existing beamline required additional power management components, such as a low energy power filter, a power detector and compact CuCrZr masks. This paper describes the thermal management challenges and their solutions. The DMM has been fully commissioned and is operational within the original I02 beamline.

Poster TUPE01 [6.566 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE01

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paper received ※ 08 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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TUPE02

Experimental Validated CFD Analysis on Helium Discharge

simulation, experiment, SRF, cryogenics

156

J.-C. Chang, Y.C. Chang, F.Z. Hsiao, S.P. Kao, H.C. Li, W.R. Liao, C.Y. Liu
NSRRC, Hsinchu, Taiwan

National Synchrotron Radiation Research Center in Taiwan (NSRRC) had set up three cryogenic systems to provide liquid helium to superconducting radio-frequency (SRF) cavities, insertion devices, and highly brilliant hard X-ray. The first one could produce liquid helium 134 LPH, with maximum cooling capacity of 469 W at 4.5 K. The second one could produce liquid helium 138 LPH, with maximum cooling capacity of 475 W at 4.5 K. The third one could produce liquid helium 239 LPH, with maximum cooling capacity of 890 W at 4.5 K. However, large liquid helium discharge in a closed space will cause personnel danger of lack of oxygen. We performed Computational Fluid Dynamic (CFD) simulation to analyse helium discharge through a SRF cavity in the Taiwan Light Source (TPS) tunnel. We simulated cases of helium discharge flow rates from 0.1 kg/s to 4.2 kg/s with and without fresh air supplied from the air conditioning system. We also set up both physical and numerical models within a space of 2.4m in length, 1.2m in width and 0.8m in height with nitrogen discharge inside to validate the CFD simulation.

Poster TUPE02 [0.671 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE02

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paper received ※ 08 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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TUPE04

Coherent Soft X-Ray EPU Vacuum Chamber Thermal Analysis for Synchrotron Radiation Protection

vacuum, synchrotron-radiation, synchrotron, radiation

159

H.C. Fernandes, P.L. Cappadoro, D.A. Harder, D.A. Hidas, C.A. Kitégi, M. Musardo, J. Rank, T. Tanabe
BNL, Upton, Long Island, New York, USA

Funding: Department of Energy
The purpose of this study was to determine the effect of beam mis-steering, on the temperature of the vacuum chamber. The chamber used for this study was for the Coherent Soft X-Ray (CSX) Elliptically Polarizing Undulator (EPU). Finite Element Analysis was conducted on the vacuum chamber to determine the temperature distribution on the chamber for set values of beam mis-steer, for NSLS-II. These results were then compared with on-site temperature measurements taken using RTD¿s, as well as thermal sensitive cameras. The accuracy of these results was analyzed and further FEA studies were proposed for steeper beam mis-steers and beam offsets.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE04

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paper received ※ 09 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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TUPE05

Numerical Simulation of the ALBA Synchrotron Light Source Cooling System Response for Failure Prevention

ECR, simulation, synchrotron, operation

162

X. Escaler
UPC, Barcelona, Spain
J.J. Casas, C. Colldelram, M. Prieto, M. Quispe
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

The ALBA Synchrotron Light Source cooling system is designed with a common return pipe that interconnects the four consumption rings. Such configuration is believed to compromise its optimal operation. To understand its thermo-fluid dynamic behaviour, a detailed 1D model has been built comprising all the components such as the pipes, fittings, bends, valves, pumping stations, heat exchangers and so on, and the various regulation mechanisms. Preliminarily, the model results in steady state operating conditions have been compared with experimental measurements and the maximum deviations have been found below 13%. Then, a series of transient numerical simulations have been carried out to determine the system response. Specifically, effects of the blockage and leakage of a consumption line as well as the increase and decrease of heat duty for the tunnel rings have been investigated. As a result, the stability of the system has been evaluated and the operational limits have been estimated in front of hydraulic and thermal load variations. Moreover, particular behaviors have been identified which can be used to design monitoring and control strategies to prevent unexpected failures.

Poster TUPE05 [0.615 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE05

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paper received ※ 07 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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TUPE06

Thermo-Fluid Numerical Simulation of the Crotch Absorbers’ Cooling Pinholes for ALBA Storage Ring

storage-ring, synchrotron, simulation, radiation

165

X. Escaler, V. Arbo Sangüesa
UPC, Barcelona, Spain
J.J. Casas, C. Colldelram, M. Prieto, M. Quispe
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

The ALBA Synchrotron Light Facility crotch absorbers, that remove the unused storage ring radiation, incorporate an internal cooling system composed by a number of parallel pinholes and by the corresponding stainless steel inner tubes inserted into each of them. Water flows in the resulting annular sections to evacuate the total heat power. Around each inner tube, a spiral wire is fixed along the whole length with a given pitch height in order to enhance the convection heat transfer. The influence of several design parameters on the absorber thermo-fluid behavior has been evaluated by means of the CFD software ANSYS CFX. In particular, the wall heat transfer coefficients and the pressure losses through a single pinhole have been evaluated for a range of different flow rates and pitch heights. Moreover, some modifications of the end wall geometry have been simulated as well as the effect of reversing the flow direction inside the channels. Finally, the critical crotch absorber type 3 has also been simulated and the limiting pitch height-flow rate combinations have been found based on the available driving pressure of the cooling system.

Poster TUPE06 [1.546 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE06

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paper received ※ 07 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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TUPE08

Finite Element Analysis of a Photon Absorber Based on Volumetric Absorption of the Photon Beam

photon, radiation, simulation, synchrotron-radiation

169

K.J. Suthar, P.K. Den Hartog
ANL, Argonne, Illinois, USA

Funding: This research used resources of the APS, a U.S. Department of Energy (DOE) Office of Science User Facility operated by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.
Designing photon absorbers for next generation multibend achromat storage rings can be challenging considering the high power densities and limited space that will typically be present. The potential for problematically high material temperatures and thermal gradients can be expected to be greater than that for previous generation machines on account of the shorter source-to-receiving surface distances. Conventionally, photon absorbers are made from copper which is highly opaque to x-rays. A consequence of this is that the majority of the heat is absorbed within a very short distance of the surface. Utilizing materials that allow a more volumetric absorption of the radiation can improve the efficiency of heat removal as it can keep surface temperatures and thermal gradients lower than would otherwise be possible. This paper discusses multiphysics analysis of a crotch absorber for the APS Upgrade project (APS-U) via full-coupling of heat-transfer and structural mechanics. The simulation results are discussed in detail.

Poster TUPE08 [1.943 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE08

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paper received ※ 10 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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TUPE09

Thermo-Fluid Study of the UPC Race-Track Microtron Cooling System

linac, microtron, simulation, vacuum

173

X. Escaler, V. Blasco, Yu.A. Kubyshin, J.A. Romero, A. Sanchez
UPC, Barcelona, Spain
M. Prieto
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
V.I. Shvedunov
SINP MSU, Moscow, Russia

The cooling system of the race-track microtron (RTM), which is under construction at the Universitat Politècnica de Catalunya (UPC), has been simulated by means of a computational fluid dynamics (CFD) software. The hydraulic and thermal performance of the system has been studied for various operation conditions. Firstly, the hydraulic model has been validated by comparison with experimental measurements at different flow rates. Then, the cooling fluid temperatures and the pressure losses of the system have been determined and the capacity of the current design to remove the generated heat at nominal power has been confirmed. Finally, the wall maximum and average temperatures and heat transfer coefficients inside the magnets and the accelerating structure have been calculated. These results have allowed us to localize sections of the cooling system with a low convection due to detached flows where, therefore, a risk of zones of high temperatures exists. An optimization of the cooling circuit with the aim to reduce such high temperature zones has been proposed.

Poster TUPE09 [0.552 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE09

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paper received ※ 02 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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TUPE10

A Thermal Exploration of Different Monochromator Crystal Designs

lattice, synchrotron, cryogenics, synchrotron-radiation

176

J.S. Stimson, M.C.L. Ward
BCU, Birmingham, United Kingdom
S. Diaz-Moreno, P. Docker, J. Kay, J. Sutter
DLS, Oxfordshire, United Kingdom

Eight potential monochromator crystal designs were subjected to a combination of three different beam powers on two different footprints. The temperature and thermal deformation were determined for each. It was found that thermal deformation of the lattice is negligible compared to the surface curvature, and that while the thinnest crystal wafer showed the smallest temperature increase, crystals cooled from the bottom alone demonstrated a far more uniform thermal deformation and a larger radius of curvature.

Poster TUPE10 [3.411 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE10

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paper received ※ 10 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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TUPE11

Study on Thermal Mechanical Design and Optimization Analysis for the ALBA Infrared Microspectroscopy Beamline (MIRAS) Extraction Mirror Based on Finite Element Analysis

extraction, radiation, dipole, synchrotron

179

M. Quispe, A. Carballedo, J.J. Casas, C. Colldelram, A. Crisol, G. Peña, L. Ribó, I. Sics, I. Yousef
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

This paper reports design, modelling, simulation and optimization results for the ALBA MIRAS infrared radiation extraction mirror. Finite element analysis (FEA) was used to simulate the thermal mechanical behaviour of the device. With the aim to ensure a good thermal performance, conservative assumptions were applied: all of the incident Bending Magnet (BM) radiation is absorbed at the mirror surface, constant bending magnetic field and low thermal contact between the mirror Al 6061 and the OFHC copper arm. A novel solution has been implemented in order to provide an effective cooling by a natural convection on the in-air part of extraction mirror assembly. This has voided the necessity for a water cooling that often causes problems due to the associated vibrations. The power conditions were calculated by using SynRad+. The main ALBA Storage Ring design parameters are: 3 GeV, 400 mA and 1.42 T. According to these conditions, the mirror absorbs 15 W with a peak power density of 0.51 W/mm2. The peak temperature calculated was 63.2 °C. The real measurements reported during the commissioning stage showed a good thermal performance, in agreement with the results predicted by FEA.

Poster TUPE11 [0.881 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE11

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paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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TUPE12

Developing White Beam Components of TPS Beamline 24A

simulation, shielding, laser, target

183

M.H. Lee, C.Y. Chang, C.H. Chang, S.H. Chang, C. Chen, C.C. Chiu, L. Huang, L. Lai, L. Lee, D.G. Liu, Y. Su, H.Y. Yan
NSRRC, Hsinchu, Taiwan

The TPS 24A, Soft X-ray Tomography (SXT) beamline, is one of the beamlines in the second construction phase at the Taiwan Photon Source (TPS). This bending magnet (BM) beamline has high flux in the range between 260 eV and 2600 eV. It is designed for transmission full-field imaging of frozen-hydrated biological samples. At the exit slit, the beam flux optimized in 520 eV is 282 billion photons/second with resolving power 2000, the beam size is 0.05 mm × 0.06 mm (V × H, FWHM) and the beam divergence is 1.73 mrad × 1.57 mrad (V × H, FWHM). By contributions of the generic beamline components project in recent years, modular mechanisms would be used in this beamline such as mask, X-ray beam position monitor (XBPM), photon absorber (PAB), and screens. However, these beamline components were designed for ID beamlines, so they should be redesigned for BM beamlines. This paper generally introduce these beamline components decided and redesigned for the TPS 24A. They will play important roles at the BM beam-lines in the future.

Poster TUPE12 [1.355 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE12

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paper received ※ 09 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017

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TUPE13

Numerical Simulation of the ALBA Synchrotron Light Source Cooling System Response to Pump Start-Up and Shut-Down

controls, synchrotron, simulation, network

187

X. Escaler, D. Juan Garcia
UPC, Barcelona, Spain
J.J. Casas, C. Colldelram, M. Prieto, M. Quispe
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

The ALBA Synchrotron Light Source cooling system is submitted to regular pump start-ups and shut-downs. Moreover, pumps can trip due to motor power failures. As a result, the piping system can be subjected to surges and pressure oscillations. The 1D thermo-fluid simulation software Flowmaster has been used to predict these transient conditions taking into account the fluid compressibility, the pipe elasticity, the characteristic time response of the check valves and the pump/motors moments of inertia. During pump start-ups, significant pressure rises are detected that can be reduced by readjusting the PID controller parameters. Unexpected pump shut-downs do not appear to provoke significant water hammer conditions. However, pressure fluctuations are generated mainly in the same pumping line but also in the rest of the system due to the particular common return configuration. In all the cases the pressure regulation mechanisms acting on the pump rotating speeds serve to attenuate the consequences of these transients. Finally, the feasibility of the model to simulate the effect on the system response of trapped air inside the pipes has also been evaluated.

Poster TUPE13 [0.743 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE13

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paper received ※ 07 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017

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TUPE14

Study, Design and Optimization Analysis of the ALBA LOREA Dipole Vacuum Chamber and Crotch Absorbers Based on Finite Element Analysis

dipole, radiation, vacuum, simulation

191

M. Quispe, J. Campmany, J.J. Casas, C. Colldelram, A. Crisol, J. Marcos, G. Peña, M. Tallarida
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

This work deals with the FEA study, design and optimization of the LOREA dipole vacuum chamber and Glidcop Al-15 crotch absorbers. At present LOREA is the ninth beam-line being designed at ALBA with an Insertion Device (ID) consisting of an Apple II-type helical undulator. For the standard dipole chamber the vertical polarized light hits the walls because of the very narrow vertical aperture between the cooling channels. In vertical mode the ID vertical divergence equals ± 2.2 mrad and the peak power density and total power are 5.6 kW/mrad² and 5.5 kW, respectively. Due to the high power a temperature as high as more than 600 °C is calculated. In consequence the dipole chamber has to be modified and the absorbers have to withstand the Bending Magnet (BM) and ID radiation. The new absorbers have to be thicker and its cooling channels are farer from BM power deposition than the standard absorbers. The thermal mechanical simulations show good results, the new absorbers are in a safe range, the maximum temperature, stress and strain are 309.2 °C, 164.2 MPa and 0.14%, respectively. The main ALBA Storage Ring design parameters used in the simulations are: 3 GeV, 400 mA and 1.42 T (BM).

Poster TUPE14 [1.524 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE14

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paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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TUPE15

Thermal Management and Crystal Clamping Concepts for the New High-Dynamics DCM for Sirius

synchrotron, radiation, simulation, undulator

194

M. Saveri Silva, R.R. Geraldes, A. Gilmour
LNLS, Campinas, Brazil
T.A.M. Ruijl, R.M. Schneider
MI-Partners, Eindhoven, The Netherlands

Funding: Brazilian Ministry of Science, Technology and Inovation
The monochromator is known to be one of the most critical optical elements of a synchrotron beamline, since it directly affects the beam quality with respect to energy and position. Naturally, the new 4th generation machines, with their small emittances, start to bring about higher stability performance requirements, in spite of factors as high power loads, power load variation, and vibration sources. A new high-dynamics DCM (Double Crystal Monochromator) is under development at the Brazilian Light Source for the Sirius EMA beamline (Extreme Condition X-ray Methods of Analysis). In order to achieve high-bandwidth control and stability of a few nrad, as well as to prevent unpredicted mounting and clamping distortions, new solutions are proposed for crystal fixation and thermal management. Since the design is based on flexural elements, it should be indeed highly predictable, so that the work was developed using mechanical and thermal FEA, including CFD. Efforts were made to predict thermal boundaries associated with the synchrotron beam, including incident, diffracted and scattered power, for which the undulator spectrum was employed in the Monte Carlo simulation package - FLUKA *.
* "FLUKA: a multi-particle transport code", A. Ferrari, P.R. Sala, A. Fasso‘, and J. Ranft, CERN-2005-10 (2005), INFN/TC₀5/11, SLAC-R-773

Poster TUPE15 [2.630 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE15

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paper received ※ 08 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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TUPE16

Design of A Leaf Spring Bender for Double Laue Crystal Monochromator at SSRF

SRF, synchrotron, focusing, optics

198

H.L. Qin, K. Yang
SSRF, Shanghai, People’s Republic of China
L. Jin, H. Zhang, W. Zhu
SINAP, Shanghai, People’s Republic of China

A leaf spring bender geometry for water-cooled double Laue crystal monochromator (DLM) is presented. The DLM will be employed to acquire high energy mono-chromatic X-ray (60keV to 120keV) on the ultra-hard applications beamline at SSRF. A compact bending mechanism is designed in order to get horizontally fo-cused high energy monochromatic X-ray as small as 0.5mm. The bender applies a piece of thin asymmetric crystal and a pair of leaf springs which push the crystal to a sagittally bent radius as small as 1 meter by a pair of symmetry moments. An optimized crystal geometry is achieved by taking into account the meridional and sagit-tal bendings coupled and defined by the anisotropic elas-ticity of the asymmetric crystal. Furthermore, thermal slope error and structural stress of the bent crystal are analyzed by finite element method (FEA).

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE16

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paper received ※ 09 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017

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TUPE18

Design and FEA of a 3D Printed Detector Window Frame

detector, scattering, vacuum, experiment

201

W. Tizzano
DLS, Oxfordshire, United Kingdom

The purpose of the project was to design and simulate a window assembly to be used in GISAX/GIWAX experiments. The window lies between the sample and the WAXS** detector, a modified, in-vacuum detector, with modules removed to allow scattered radiation to pass through to a SAXS*** detector positioned downstream. The window uses 75um thick Kapton HN film and given the size, pressure and the short distance to the sensors, it was necessary to support it on a frame. To avoid any information loss from shadowing of the detector, a frame was designed so that shadows will be projected into the gaps between the detector modules. The geometry was such that DMLS**** was an effective way of producing the item. Given the slenderness of the structure and the forces it supports, the material approaches or exceeds its yield point, so a bilinear, isotropic, hardening material model was chosen; moreover, large deflections were enabled. Also, the contacts were modelled with augmented Lagrange frictional formulation. All these assumptions made the analysis strongly non-linear.
*Grazing Incidence Small/Wide Angle X-ray scattering
**Wide Angle X-ray Scattering
***Small Angle X-ray Scattering
****Digital Metal Laser Sintering

Poster TUPE18 [7.079 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE18

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paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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TUPE19

Application of a NEG Coated Chamber at the Canadian Light Source

vacuum, storage-ring, undulator, survey

205

S.Y. Chen, D. Bertwistle, K. Kei, C. Murray, T.M. Pedersen
CLS, Saskatoon, Saskatchewan, Canada

In the Fall of 2015 a 4800 mm long NEG coated chamber was installed in the Canadian Light Source in cell 9 straight section. The chamber will occupy to majority of the straight length. The chambers vacuum has been monitored for +1 year and no obvious issues has been found. The chamber body is 10 mm thick and the aperture is an ellipse with a 8 mm height and a 65 mm width. A design feature of the chamber is a lack of support in-between the ends of the chamber. The lack of support space is due to the double elliptically polarizing undulator (54 mm, and 180 mm period). This proceeding details the following: a.The structure design and Finite Element Analysis for the deflection and strength; b.Heat loads and cooling calculation; c.Supports design; d.Deflection and correction with the supports; e.Current strips installation f.Activation;

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE19

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paper received ※ 15 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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TUPE21

CLSI BMIT’s Super-Conducting Wiggler Cryogenic Safety Improvements*

wiggler, cryogenics, operation, vacuum

209

L.X. Lin, T.W. Wysokinski
CLS, Saskatoon, Saskatchewan, Canada

4.1 T superconducting (SC) wiggler on CLS Biomedical Imaging and Therapy (BMIT) beamline [1-4] developed a critical problem in the cryogenic safety relief and refill paths. Ice blockage formed and prevented helium gas from relieving during liquid helium (LHe) refill. This resulted in an internal pressure built up, which caused expelling of the LHe and cold gas helium (GHe) from the wiggler cryostat. Several improvements were performed over the years including replacement of the original rupture disk, the pressure relief valves and installation of metal O-ring seals at external ports. Following these improvements, a major upgrade on the wiggler safety relief path was implemented by adding a new vent pipe directly connected to the cryostat for safety exhaust. The LHe refill path was also modified to eliminate possibility of ice blockage. During initial tests after the up-grades, we experienced significant heat load increase which was linked to the thermal acoustic oscillations in the LHe transfer line. The problem was resolved by improving the insulation vacuum in the transfer line and adding a super insulation assembly into the direct vent pipe along with a plug at the refill path.
*Work supported by Budker Institute of Nuclear Physics under contract No. C60109-029
¿ Linda. Lin@lightsource.ca

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE21

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paper received ※ 08 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017

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TUPE22

Low-Order Aberrations Correction of Extreme Ultraviolet Imaging Objective with Deformable Multilayer Mirrors

alignment, controls, optics, software

213

M. Toyoda, R. Sunayama, M. Yanagihara
Tohoku University, Institute of Multidisciplinary Research for Advanced Materials, Sendai, Japan

For at-wavelength observation of a lithography mask, recently, we proposed an EUV microscope consisting of multilayer-mirror objective (operating wavelength: 13.5 nm, numerical aperture: 0.25). To provide diffraction-limited spatial resolution below 30 nm, reduction of wave aberrations of low order, i.e., spherical aberration, coma, and astigmatism, should be key technical challenge for the microscope. In this paper, firstly, we describe detail of optical design and instrumentation of the point diffraction interferometer (PDI), so as to provide high enough sensing accuracy of 100 pm, which would be required for an optical axis adjustment of the EUV objective. Next, experimental results of wave front correction on the EUV objective are reported. We corrected spherical aberration and coma by precisely aligning an optical axis of the mirrors, while effects of astigmatism were also minimized with a figure-deformable mirror which can control radius of curvature in two mutually orthogonal directions. We confirmed that these low order terms should be less than 0.3 nm RMS.

Poster TUPE22 [3.217 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE22

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paper received ※ 06 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017

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TUPE23

Glidcop Brazing in Sirius’ High Heat Load Front-End Components

vacuum, synchrotron, operation, photon

216

G.V. Claudiano, O.R. Bagnato, P.T. Fonseca, F.R. Francisco, R.L. Parise, L.M. Volpe
LNLS, Campinas, Brazil

Sirius is a 4th generation synchrotron light source in project. Some of Sirius’ beamlines will have a very high power density, more than 50 kW/mrad², to be dissipated in components that have a limited space condition. Thus, the refrigeration of these components is complex when one has in mind that the coolant flow cannot be too turbulent in order to not induce much vibration in the components. Oxygen Free Electrolytic Cu (OFEC) has been replaced by the Glidcop, on 4th generation synchrotron applications, due to its good thermal conductivity and preservation of mechanical properties after heating cycles. However, as this material is not very workable in terms of union with other materials, which led to the development of a brazing process for Glidcop and stainless steel union. Glidcop samples were submitted to a Cu-electroplating process and a silver base alloy (BVAg-8) was used to join the parts in a high vacuum furnace. Electroplating was used to improve the filler metal wettability. The results were very satisfactory, ensuring water and vacuum tightness. A desirable characteristic not yet proved is the virtual leak property. This paper will discourse about this brazing method.

Poster TUPE23 [1.553 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE23

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paper received ※ 09 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017

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TUPE25

Metallurgical Evaluation of Dissimilar Metal Joints for Accelerator Vacuum Chamber Construction at the Advanced Photon Source Upgrade Project

vacuum, ECR, interface, laser

220

G. Navrotski, B. Brajuskovic
ANL, Argonne, Illinois, USA

Funding: Funding provided by the Advanced Photon Source, U.S. Department of Energy, Office of Science, Argonne National Laboratory under Contract No. DE-AC02-06CH11357.
Tubular vacuum chamber assemblies made of aluminum, copper and stainless steel alloys will be used in the new Multi Bend Achromat (MBA) storage ring that is being developed at Advanced Photon Source (APS). Details of the new lattice magnet system design and ring impedance considerations continue to drive these vacuum chambers to smaller dimensions and thinner walls with tighter geometric tolerances under higher thermal loads. It is important to carefully evaluate the methods used to join these dissimilar metal components looking for compromise in primary strength, permeability, electrical and thermal properties while still creating structures that are ultra-high vacuum compatible and leak-tight. This paper visually details the underlying metallurgical changes that occur when joining various combinations of aluminum, OFE copper, GlidCop® and stainless steel using brazing, bonding and welding techniques. Each of the techniques has its advantages and disadvantages with engineering and economic consequences.

Poster TUPE25 [2.312 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE25

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paper received ※ 07 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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TUPE26

Carbon-Steel/poliethylene Radiation Enclosures for the Sirius Beamlines

radiation, shielding, simulation, neutron

223

L. Sanfelici, H.F. Canova, F.H. Cardoso, R. Madacki, M.A. Pereira, M.L. Roca Santo, L.G. Silva, M.S. Silva, J.E. dos Santos
LNLS, Campinas, Brazil
L. Buccianti, M.H.A. Costa, E. Palombarini
Biotec Controle Ambiental, São José dos Campos, SP, Brazil
C. Prudente
Prudente Engenharia Ltda., Uberlândia, Minas Gerais, Brazil

Funding: Brazilian Ministry of Science, Technology, Innovation and Communication
Lead enclosures have been used over the past decades for radiation protection at mid and high-energy synchrotron light-sources, requiring nearly 10% of the investment needed to set up a new beamline. Due to the increasing concern about neutron levels, in part due to the reduction of the photon radiation levels with the increased thickness of the hutch walls, the existing constructive models were revisited and a new constructive approach based on Carbon-Steel (CS) and High-Density Polyethylene (HDPE) is proposed for the SIRIUS beamlines, leading to increased overall radiation protection and potentially lower cost. This work is going to show preliminary simulation results, cost-comparison, as well as a few mechanical design details and prototyping initiatives.

Poster TUPE26 [2.930 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE26

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paper received ※ 09 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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TUPE28

Characterization of the Acoustic Field Generated by the Single-Axis Acoustic Levitator

experiment, simulation, LabView, photon

226

A. Chavan
GIT/ECE, Atlanta, Georgia, USA
A. DiChiara, P.D. Hartog, B. Hu, K.J. Suthar
ANL, Argonne, Illinois, USA

The acoustic levitator utilizes two transducers that emit acoustic waves. A standing wave is generated between the two transducers that allows for the levitation of particles at the nodes of the standing wave. These levitated particles experience an instability. In order to aid in the process of solving this instability, the acoustic field created by one of the transducers was characterized in this experiment. This characterization helps to understand the intensity of the acoustic field at different points throughout the region and how the acoustic wave diverges as it travels away from the transducer.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE28

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paper received ※ 10 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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TUPE29

Integration of a Stripline Kicker Prototype for CLIC Project Into ALBA Storage Ring

kicker, synchrotron, vacuum, distributed

230

R. Monge, J.C. Giraldo, J. Ladrera Fernández, M.L. Llonch, L. Nikitina, M. Pont, M. Quispe
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

The Compact Linear Collider (CLIC) project is an international collaboration with CERN for developing a high-energy and high-luminosity machine which accelerates and collides electrons and positrons at energies up to several tera-electron volts. The extraction system for the Damping Rings of the CLIC shall follow very tight requirements in order to maintain the ultra-low emittance of the extracted bunches. A first prototype of the extraction kicker based on stripline technologies has been built and characterized at CERN without beam. The stripline chamber will be shortly installed in the ALBA Synchrotron to be tested under beam. In situ measurements of the impedance, transversal field homogeneity and flat-top ripple aims to complete its characterization. This contribution presents the design of the set up for the integration of the stripline chamber in one of the medium straight sections of ALBA storage ring.

Poster TUPE29 [4.469 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE29

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paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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TUPE31

Manufacturing of Photon Beam-Intercepting Components from CuCrZr

vacuum, photon, operation, synchrotron

233

F.A. DePaola, C. Amundsen, S.K. Sharma
BNL, Upton, Long Island, New York, USA

Photon beam-intercepting components in synchrotron light sources have usually been made as water-cooled Glidcop bodies brazed to stainless steel conflate flanges. This fabrication method involves many manufacturing steps which result in increased cost, long procurement time and lower manufacturing reliability. A new design approach was recently proposed which simplifies fabrication by eliminating brazing and utilizes a readily available copper alloy, CuCrZr. This paper describes the manufacturing experience gained at NSLS-II from fabricating many components of this new design. Results of an investigation of various techniques for joining CuCrZr to itself and to SS304 and AL-6061 are also presented.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE31

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paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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TUPE32

A Girder-Free Magnet Support System Design

alignment, storage-ring, vacuum, brightness

236

S.K. Sharma
BNL, Upton, Long Island, New York, USA

Magnet support systems for the new light sources are required to satisfy several rigorous performance specifications. The support system must be rigid so that its static deflection under its own weight and the combined weight of the magnets is small and repeatable. For vibration stability the lowest natural frequency of the magnet-support assembly should be greater than 50 Hz. To meet thermal stability requirements it is desirable to minimize bending deformation of the support system when subjected to temperature changes. In addition, the magnet support system should be easy to transport, easy to align, and cost effective. Altogether these requirements are difficult to satisfy, especially if the main structural component of the support system is a girder of length greater than 3 meters. In this paper we propose a magnet support system design consisting of column-type supports joined by removable C-beams. The column-type supports provide a superior stability performance without compromising the alignment capability. Analysis results are presented to characterize the performance of this support system.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE32

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paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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TUPE33

NSLS-II Beam Aperture Slit Vibration Studies

controls, vacuum, alignment, storage-ring

239

C.J. Spataro, C. Amundsen, H. Bassan, S.K. Sharma
BNL, Upton, Long Island, New York, USA

Beam aperture slits mounted on stepper-motor driven X-Y stages are used in NSLS-II frontends to define the beam size and to limit thermal loads on downstream optical components. The X-Y stages have positional and resolution requirements of 1 µm and 0.1 µm, respectively. This is achieved by micro-stepping the stepper motor by a Delta-Tau GeoBrick-LV-NSLS-II controller. During the initial operation of the X-Y stages unacceptable levels of vibration when the stages were in motion, and an intermittent sharp squealing when they were at rest, were discovered. In this paper we present the studies that were undertaken to investigate these issues and the solutions that were implemented.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE33

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paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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TUPE36

Ground Vibration Monitoring for SXFEL Construction at SSRF

SRF, experiment, FEL, site

242

R.B. Deng, F. Gao, L. Yin
SINAP, Shanghai, People’s Republic of China

Funding: Project supported by the National Natural Science Foundation of China (Grant No. 11405255)
Shanghai X-ray Free Electron Laser test facility (SXFEL) began construction on Dec.30 2014. It is quite important to monitor the ground vibration influenced by the construction at Shanghai Synchrotron Radiation Facility (SSRF), because the SXFEL is just in the north of SSRF and the nearest distance is only 20m. In this paper, the results of ground vibration measurement during the construction period at SSRF experimental hall, tunnel and experimental room near the SXFEL site are shown. Vibrations at different hours, frequency bands and directions are discussed to provide more detailed information on the influence of SXFEL construction to SSRF.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE36

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paper received ※ 08 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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TUPE38

Progress and Mechanical Engineering of FEL Projects at SINAP

FEL, undulator, electron, linac

246

L. Yin, W. Fang, X. Hu, S. Sun, L. Wang, L.Y. Yu, W. Zhang
SINAP, Shanghai, People’s Republic of China

Free electron laser (FEL) technology is the next focus at Shanghai Institute of Applied Physics (SINAP). Shanghai Deep Ultraviolet Free-Electron Laser (SDUV-FEL), a test facility for new FEL principles, was operated for 5 years and got a series of important results. Dalian Coherent Light Source (DCLS), a 50~150nm wavelength FEL user facility based on a 300MeV linac located at Dalian Institute of Chemical Physics, started beam commissioning in August. Shanghai X-ray Free-Electron Laser (SXFEL), a soft X-ray FEL test facility based on an 840MeV linac, will be installed in this month and the commissioning is scheduled at the beginning of 2017. The Progress of the FEL projects and the mechanical engineering in the design and construction are presented.

Poster TUPE38 [8.096 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE38

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paper received ※ 07 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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TUPE40

Cryo-Ready Undulator U15: Passing SOLEIL’s 2 Meters Threshold in Useful Magnetic Length

undulator, electron, FEL, storage-ring

249

M. Tilmont, F. Briquez, N. Béchu, L. Chapuis, M.-E. Couprie, J.M. Dubuisson, J.P. Duval, C. Herbeaux, A. Lestrade, J.L. Marlats, M. Sebdaoui, K.T. Tavakoli, C. de Olivera
SOLEIL, Gif-sur-Yvette, France

The U15 is an in-vacuum undulator designed to operate at room temperature and at 70K. It is the first in-vacuum undulator designed, assembled and which will be used in SOLEIL’s storage ring that have support beams for magnets longer than 2 meters. A clear gap is felt in the technologies used for manufacturing and assembling compared to our standard 2m length in-vacuum undulators. This is due, in part, to the tolerances imposed by the maximum phase error admissible in SOLEIL’s storage ring. The poster will shine lights on those difficulties from a design and manufacturing point of view.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE40

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paper received ※ 11 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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TUPE41

Design and Development of a System of Hybrid Type to Measure the Magnetic Field of a Cryogenic Undulator

vacuum, undulator, cryogenics, controls

251

C.H. Chang, S.D. Chen, J.C. Huang, C.-S. Hwang, C.K. Yang
NSRRC, Hsinchu, Taiwan

Cryogenic permanent-magnet undulators (CU) have currently become the most important scheme serving as sources of hard X-rays in medium-energy facilities worldwide. One such set (length 2 m, period length 15 mm) is under development for Taiwan Photon Source (TPS). To obtain a magnetic-field distribution of the cryogenic undulator after it is cooled to an operating target temperature below 80 K, a device of hybrid type combining a Hall probe and stretched-wire method has been designed and developed, to perform the field measurement at low temperature and in an ultra-high vacuum environment. The Hall probe is used to measure the field on axis in the transverse and vertical directions; the stretched wire is utilized to measure the field integral in the vertical and horizontal directions in the horizontal plane. Unlike a conventional field-measurement system in air, this innovative system must be located in an ultra-high vacuum environment with limited clearance. This paper describes mainly the entire system, including kernel components, control systems and preliminary test results in detail.

Poster TUPE41 [1.374 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE41

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paper received ※ 08 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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TUPE44

Optimization for the APS-U Magnet Support Structure

alignment, ECR, photon, software

254

Z. Liu, H. Cease, J.T. Collins, J. Nudell, C.A. Preissner
ANL, Argonne, Illinois, USA

Funding: Work supported by: Argonne is managed by UChicago Argonne, LLC, for the U.S. Department of Energy under contract DE-AC02-06CH11357.
The Advanced Photon Source Upgrade (APSU) is to replace the existing storage ring with a multi-bend achromats (MBA) accelerator lattice *. For the APS-U removal and installation, current planning calls for a 12-month shutdown and testing period, prior to resumption of operations. It calls for quick installation of the magnet support system with assembly and installation alignment tolerance. A three-point, semi-kinematic vertical mount for the magnet modules is the approach to reduce time for alignment. The longest section is the curved FODO section (four quads with three Q-bends interleaved, and a three-pole wiggler). All magnets of the FODO section sit on a single piece of support structure in order to have a good control over the magnet-to-magnet alignment tolerance. It brings challenge to minimize the top surface deflection and maximize the first mode frequency of the magnet support structure that is supported at three points. These constraints call for the need of optimizing the magnet support structures. Details of the optimization, including three-point positioning, material selection, and topology optimization, are reported in this study.
* Glenn Decker (2014) Design Study of an MBA Lattice for the Advanced Photon Source, Synchrotron Radiation News, 27:6, 13-17, DOI: 10.1080/08940886.2014.970932

Poster TUPE44 [1.889 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE44

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paper received ※ 07 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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WEAA02

X-Ray Absorber Design and Calculations for the EBS Storage Ring

SRF, storage-ring, vacuum, scattering

257

F. Thomas, J.C. Biasci, D. Coulon, Y. Dabin, T. Ducoing, F. Ewald, E. Gagliardini, P. Marion
ESRF, Grenoble, France
F. Thomas
ILL, Grenoble, France

The Extremely Brilliant Source (EBS) of the ESRF will hold new type of X-Ray absorbers: a new material will be used (CuCr1Zr suggested by *) together with a novel design integrating: - CF flange are machined in the absorber body. No weld, no braze. - Optimized toothed surface profile, reducing the induced thermal stresses. - Compton and Rayleigh scattering integrated blocking shapes. - Concentric cooling channels. A brief overview of the new design and concepts will be given. The presentation will then focus on thermo-mechanical absorber ANSYS calculations, combining both Computational Fluid Mechanics (CFD). The calculations and the calculation process will be discussed as well as the design criteria chosen by the team. The CFD calculations will show that an heat transfer coefficient between the water and the copper part can be estimated as well as the pressure drop through the absorber. Finally, the stress analysis will be emphasized. The type of stresses (tensile, compressive or shear) and their nature (primary or secondary) will be linked to the choice of design criteria.
* S. Sharma, "A Novel Design of High Power Masks and Slits", Proc. of MEDSI2014, Australia (2014).

Slides WEAA02 [1.968 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEAA02

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paper received ※ 11 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEAA03

Thermal Stability of the New ESRF Extremely Brilliant Source

quadrupole, storage-ring, coupling, experiment

262

B. Tampigny, J.C. Biasci, J-F.B. Bouteille, Y. Dabin, M. Diot, L. Farvacque, F. Favier, A. Flaven-Bois, T. Marchial, D. Martin, P. Raimondi, P. Roux-Buisson
ESRF, Grenoble, France
F. Thomas
ILL, Grenoble, France

In the frame of the Extremely Brilliant Source project (EBS), studies dedicated to disturbances have been more intensively investigated. Engineering instabilities have two origins: mechanical and thermal. Major thermal issues are: - air conditioning presents a temperature ramp up of 2°C along the sector - storage ring requires a warm up period of 4 days for reaching a stable orbit These effects have been observed and corrected for 20 years. With EBS requirements, we need to identify these thermal effects in order to reduce the disturbances, thus improving more systematically the source stability. The study is lead by the comparison between the present and the new thermal system. To do so, it is necessary to evaluate the heat balance in this system, as well as to identify the thermal time constant of each component. FEA models have been performed to reveal sensitivity of these thermal issues. A full scale mock-up cell equipped with a prototype girder is measured with power cables inside. A FEA model was also developed for the present storage ring to analyse the air stream. Although investigations have already been developed, some others remain to be achieved by the end of 2016.

Slides WEAA03 [4.824 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEAA03

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paper received ※ 10 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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WEAA04

Novel Numerical Method for Calculating the Shadow Projection and Collisions of a Multi-Axis Goniometer at Diamond

detector, vacuum, factory, alignment

267

V. Grama, A. Wagner
DLS, Oxfordshire, United Kingdom

Beamline I23 is a long-wavelength macromolecular crystallography beamline at Diamond Light Source. The end station is a unique instrument with a bespoke cryogenically cooled multi-axis goniometer and a large curved Pilatus 12M detector in a high vacuum environment. As experiments become limited by radiation damage to the crystals, optimised strategies are needed to orient crystals in the most efficient way to obtain a complete dataset with a minimal X-ray dose. Two key factors affect the optimisation strategies. Firstly, shadowing on the detector by the goniometer resulting in data loss in this region and secondly, collisions between the goniometer and other components in the end station restricting the available angular range for sample centering and data collection. This paper discusses the numerical methods for calculating the shadowing of a multi-axis goniometer on a semi-cylindrical detector and the calculation of the allowable angles for various conditions to prevent collisions with neighbouring components.

Slides WEAA04 [61.267 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEAA04

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paper received ※ 07 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEBA01

Nostradamus and the Synchrotron Engineer: Key Aspects of Predicting Accelerator Structural Response

synchrotron, damping, experiment, simulation

272

C.A. Preissner, H. Cease, J.T. Collins, Z. Liu, J. Nudell
ANL, Argonne, Illinois, USA
B.N. Jensen
MAX IV Laboratory, Lund University, Lund, Sweden

Funding: Argonne is managed by UChicago Argonne, LLC, for the U.S. Department of Energy under contract DE-AC02-06CH11357.
MBA designs are placing stringent mechanical tolerances on the magnet support systems. At the APS-U the mag-net-to-magnet vibration tolerances are about 10 nm *. Timelines, installation requirements, and budgets constrain the resources available for prototyping and physical testing. Reliance on FEA to predict dynamic response is para-mount in insuring the tolerances are met. However, obtaining accurate results from a magnet support structure FEA is not as simple as analysing the CAD model of the structure. The 16th century author Nostradamus published a collection of prophecies that since his time, have been held up as predictions of various world events. While it is attractive to think his collection of short poems can be used to foretell the future, in reality it is only the vagueness and absence of any dates that make them easy to apply in a posthoc basis. Arguably, a similar statement can be made about the use of FEA in predicting accelerator support response. In this presentation the important contributors to FEA dynamic modelling will be discussed along with techniques that can be used to generate necessary data for models that can accurately predict response.
* APS-Upgrade, Functional Requirements Document, Advanced Photon Source, Argonne, IL, USA, APSU1695659, May 2016.

Slides WEBA01 [14.136 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEBA01

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paper received ※ 10 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEBA03

Recent Progress on the Design of High-Heat-Load Components

photon, SRF, dipole, vacuum

277

S.K. Sharma, C. Amundsen, F.A. DePaola, F.C. Lincoln, J.L. Tuozzolo
BNL, Upton, Long Island, New York, USA

A new design was recently proposed for the high power masks and slits of the front-ends at the 2014 MEDSI Conference. The main features of the new design are integrated knife edges in high conductivity copper alloys, interception of the photon beam only on horizontal surfaces, replacing Glidcop® with readily available CuCrZr, and thermal optimization with internal fins. Numerous components based on this design have been built for NSLS-II front-ends and some of the design features have been incorporated into other high-heat-load components such as beamline masks and crotch absorbers. In this paper we describe recent progress at NSLS-II in further advancing this design approach by FE analysis, fabrication and testing.

Slides WEBA03 [4.523 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEBA03

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paper received ※ 09 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEBA04

A Discussion on Utilization of Heat Pipes and Vapour Chamber Technology as a Primary Device for Heat Extraction from Photon Absorber Surfaces

photon, radiation, simulation, factory

280

K.J. Suthar, P.K. Den Hartog, A.M. Lurie
ANL, Argonne, Illinois, USA

Funding: This research used resources of the APS, a U.S. Department of Energy Office of Science User Facility operated by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.
The basic problem for photon absorbers in a particle accelerator is to remove a large quantity of heat from a small space. Heat pipes and vapor chambers excel at precisely this so it is natural to consider them for the application. However, even though this technology has been proven to be an excellent thermal management solution for cooling everything from laptops to satellite shields in space, they have yet to be adopted for use in particle accelerators. The use of heat pipes and vapor chambers are thermal transport devices which work on the principle of capillary-force-driven two-phase flow. These devices are highly customizable and offer very high effective thermal conductivities (5,000-200, 000 W/m/K) depending on many factors including size, shape, and orientation. This paper discusses feasibility of the use of heat pipes and vapor chambers as the primary heat transport devices in particle accelerator photon absorbers. We discuss their limitations and advantages via careful consideration of analysis and simulation results assuming properties described in the literature and manufacturer specifications.

Slides WEBA04 [3.263 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEBA04

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paper received ※ 10 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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WECA03

Experience With the Commissioning of the U15-Undulator for SwissFEL-Aramis Beamline and New Developments for the Athos Beamline

undulator, vacuum, FEL, controls

283

P. Boehler, M. Brügger, M. Calvi, H. Jöhri, A. Keller, M. Locher, T. Schmidt, L. Schulz
PSI, Villigen PSI, Switzerland

The development of the U15 undulator was presented at the MEDSI Conference 2012 in Shanghai. Meanwhile the undulator line is finished. The presentation will explain the experience with the production, the assembling and the commissioning of the undulators. We succeeded to implement a robotic system, that did the final adjustment of all the magnets automatically. Therefore, we were able to reduce the time for the adjustment of the magnets dramatically. A whole loop with measuring, adjustment of the columns and final adjustment with the robotic system for the magnets takes 3 days. The presentation will explain these steps. For the next beam-line, we will profit from the experience of the U15 undulator development, but there are new requirements, because it will be a polarized undulator with a period of 38mm. We are developing a new arrangement of the drives, a further development of the magnet keepers and a vacuum-pipe with only 0.2mm of wall thickness.

Slides WECA03 [11.263 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WECA03

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paper received ※ 09 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WECA04

Horizontal-Gap Vertically-Polarizing Undulator (HGVPU) Design Challenges and Resolutions

undulator, controls, vacuum, alignment

288

O.A. Schmidt, E. Gluskin, D.P. Jensen Jr., G. Pile, N.O. Strelnikov, K.J. Suthar, E. Trakhtenberg, I. Vasserman, J.Z. Xu
ANL, Argonne, Illinois, USA

The Horizontal-Gap Vertically-Polarizing Undulator (HGVPU) is a compact, innovative, variable-gap insertion device developed by Argonne National Laboratory for the LCLS-II HXR beamline at SLAC. A full sized 3.4-meter-long prototype has been built and fully tested meeting all LCLS-II undulator specifications. An array of conical springs compensates the attractive magnetic forces of the undulator jaws. These springs are designed to exhibit non-linear spring characteristics that can be closely tuned to match the force curve exerted by the magnetic field, thereby minimizing the overall deflection of the strongbacks. The HGVPU also utilizes the existing LCLS-I support and motion system along with other existing equipment and infrastructure, thus lowering overall cost and installation downtime.

Slides WECA04 [12.616 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WECA04

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paper received ※ 10 September 2016 paper accepted ※ 03 October 2016 issue date ※ 22 June 2017

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WECA05

Superconducting RF System Plans at CLS

cavity, cryomodule, storage-ring, SRF

293

C.N. Regier
CLS, Saskatoon, Saskatchewan, Canada

Canadian Light Source (CLS) in Saskatoon, Canada has several cryogenic systems. One of the most critical is a 4.4 K liquid helium system for a superconducting RF cavity. This system consists of a Linde TCF-50 liquid helium plant coupled to a Cornell-designed CESR-B 500 MHz cavity and cryomodule via a 52 metre multi-channel transfer line. Over the years CLS has evaluated failures on the system as well as risks for downtime, and has come up with plans for a major upgrade to the superconducting RF system to improve reliability. An overview of performance and issues to date is presented. Some of the specifics of the risk analysis and upgrade plan will be examined, and details of the process flow discussed.

Slides WECA05 [5.622 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WECA05

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paper received ※ 11 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017

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WECA06

Mechanical Engineering Solutions for COXINEL Project

electron, undulator, laser, quadrupole

299

K.T. Tavakoli, T. André, I.A. Andriyash, C. Basset, C. Benabderrahmane, P. Berteaud, S. Bobault, S. Bonnin, F. Bouvet, F. Briquez, L. Chapuis, M.-E. Couprie, D. Dennetière, Y. Dietrich, J.P. Duval, M. El Ajjouri, T.K. El Ajjouri, C. Herbeaux, N. Hubert, M. Khojoyan, M. Labat, N. Leclercq, A. Lestrade, A. Loulergue, O. Marcouillé, F. Marteau, A. Mary, P. N’gotta, F. Polack, P. Rommeluère, M. Sebdaoui, F. Thiam, M. Valléau, J. Vétéran, D. Zerbib, C. de Olivera
SOLEIL, Gif-sur-Yvette, France
J. Gautier, G. Lambert, V. Malka, J.Y. Roussé, K. Ta Phuoc, C. Thaury
LOA, Palaiseau, France
E. Roussel
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy

Funding: European Research Council (ERC) advance grant
COXINEL (COherent Xray source INferred from Electrons accelerated by Laser) is a European Research Council (ERC) advance grant aims at demonstrating Free Electron Laser amplification at 200 nm with 180 MeV electrons generated by laser plasma acceleration. A special electron beam transfer line with adequate diagnostics has been designed for this project. Strong-focusing variable-field permanent magnet quadrupoles, energy de-mixing chicane and a set of conventional quadrupoles condition the electron beam before its entrance to an In-Vacuum U20 undulator. This presentation describes some of the features incorporated into the design of the magnets, girders, vacuum vessels and diagnostic equipment for this experimental machine. Progress on the equipment preparation and installation is presented as well.

Slides WECA06 [33.987 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WECA06

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paper received ※ 02 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

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WECA07

Engineering Challenges of the VMXi Beamline

detector, controls, feedback, MMI

304

J.H. Kelly
DLS, Oxfordshire, United Kingdom

The in-situ versatile macromolecular X-tallography (VMXi) beamline delivers a high flux density, taking data directly from crystallisation experiments within the plate, using a fully automated endstation. A double multilayer monochromator (DMM) was designed in-house to deliver a 60 fold increase in flux. Two robots and an automated load-lock pass the plates from the crystallisation storage units to the goniometer. A compact endstation was designed to accept the high flux and take data with acquisition times down to a millisecond. This paper gives an overview of the beamline layout and the interesting pieces of engineering design. The beamline is planned to take first user at the end of 2016.

Slides WECA07 [5.292 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WECA07

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paper received ※ 08 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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WEPE01

Combined Fixed Mask, Photon Shutter, Safety Shutter, and Collimator Design for BXDS IVU at the CLS

radiation, photon, operation, vacuum

309

M.J.P. Adam, C. Bodnarchuk
CLS, Saskatoon, Saskatchewan, Canada

Funding: Canadian Foundation for Innovation
The first shutter assembly outside of the Front End (FE) for Brockhouse X-Ray Diffraction and Scattering Sector (BXDS) beamline required a unique design solution to accommodate all components into required safety shutter position. Located between the IVW high energy wiggler monochromator and POE1 wall, the total envelope size approximated 1m x 0.660m (LxW). Accommodating a smaller space required an alternative shutter design than traditionally used implemented at the CLS. The alternative proposed design combined the collimator (CLM), safety shutter (SSH), photon shutter (PSH) and Fixed Mask (FM) into one chamber. Finite Element Analysis (FEA) was conducted on the FM and PSH assembly to verify that geometric designs were adequate for reasonable operation in the beamline. FEA was used to determine the steady-state thermal and static-structural response in both operating positions. Missteer was analyzed for both operating positions to a maximum of 2.5mm (commonly accepted missteer used at the CLS) from center. Finally, two extreme position (5mm) analyses were completed for determination of potential, but unlikely operating conditions.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE01

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paper received ※ 11 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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WEPE02

Performance Evaluation of Fast Closing Shutter System at the SPring-8 Front-end

vacuum, experiment, storage-ring, ECR

312

S. Takahashi
JASRI/SPring-8, Hyogo, Japan
M. Sano, A. Watanabe
Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), Hyogo, Japan

The fast closing shutter (FCS) system plays an important role in protecting the ultra-high vacuum in the SPring-8 storage ring from a sudden vacuum accident in the beam-lines. In order to predict the transit time of the shock wave and the following pressure increase, a shock tube system with an inner diameter of 35 mm and a total length of 10 m was prepared to measure the shock Mach number. Experiments have been conducted that simulated an inrush of the atmosphere into the high-vacuum (~10^-3 Pa) pipe by using a trigger system that combines of a thin cellophane diaphragm with a plunger. Special ionization gauges with a high-speed amplifier are distributed about every 1 m to detect the transit time of the shock wave and to measure the pressure in a low-pressure chamber after the actuation of the FCS system. By inserting vacuum components with various cross-sectional shapes including actual front-end components into the shock tube, the attenuation in the shock wave was systematically investigated.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE02

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paper received ※ 06 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEPE03

Beamline Front Ends at the 2.5-GeV Photon Factory Storage Ring

photon, wiggler, storage-ring, undulator

315

H. Miyauchi, S. Asaoka, T. Tahara
KEK, Ibaraki, Japan

Since the first commissioning in 1982, the 2.5-GeV Photon Factory storage ring has been upgraded three times in 1986, 1997 and 2005, in order to reduce the beam emittance and to create new four short straight sections for in-vacuum short period undulators. To satisfy the new boundary conditions of the upgrades, the beamline front ends were re-designed. We look back on the history of the beamline front-end components at the Photon Factory.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE03

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paper received ※ 15 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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WEPE04

Design of X-Ray Beam Position Monitor for High Heat Load Front Ends of the Advanced Photon Source Upgrade

detector, vacuum, radiation, undulator

318

S.H. Lee, J. Mulvey, M. Ramanathan, B.X. Yang
ANL, Argonne, Illinois, USA

Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357
Accurate and stable x-ray beam position monitors (XBPMs) are key elements in obtaining the desired user beam stability in the Advanced Photon Source (APS). Currently, the APS is upgrading its facility to increase productivity and to provide far more highly coherent and brilliant hard x-rays to beamline experiments with a new storage ring magnet lattice based on a multi-bend achromat (MBA) lattice. To improve the beam stability, one of the proposed beam diagnostics is the grazing-incidence insertion device x-ray beam position monitor (GRID-XBPM) for high heat load (HHL) front ends (FEs) at the APS. In this paper, final design of the GRID-XBPM and the high-power beam test results at beamline 27-ID-FE will be addressed.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE04

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paper received ※ 07 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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WEPE05

Innovative Design of Radiation Shielding for Synchrotron Light Sources

radiation, shielding, synchrotron, storage-ring

321

M.G. Breitfeller, S.L. Kramer
BNL, Upton, Long Island, New York, USA

Over the course of decades, the shape of the bulk shielding walls for synchrotron light sources has developed into a standard configuration, including a ratchet shape of the outer storage ring wall, to accommodate the clearance needs for front end and first optical enclosure assemblies. New state of the art light sources will have low emittance, high energy beams, which will give potential for higher beam losses. These losses will yield higher radiation dose rates at the downstream wall and stricter safety requirements in the first optical enclosure. Throughout the installation of local shields at NSLS-II, verification dose rate studies of various shielding configurations were performed. Analysis of these studies revealed that a circular outer bulk shield wall could greatly reduce the dose rate to the users who work near the front end optical components. This presentation discusses the benefits of this circular bulk shield wall verses the challenges of component installation near the wall and ways to mitigate them.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE05

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paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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WEPE06

High Heat Load Front Ends for Sirius

photon, vacuum, storage-ring, radiation

324

L.M. Volpe, H.F. Canova, P.T. Fonseca, P.P.S. Freitas, A. Gilmour, A.S. Rocha, G.L.M.P. Rodrigues, L. Sanfelici, M. Saveri Silva, H. Westfahl Jr., H.G.P. de Oliveira
LNLS, Campinas, Brazil

Funding: Brazilian Ministry of Science, Technology, Innovation and Communication (MCTIC)
Currently under construction on Brazilian Synchrotron Light Laboratory Campus, Campinas/SP, Sirius is a 3GeV, 4th Generation Synchrotron Light Source. In this paper we describe the Front End that has been designed to transmit the intense synchrotron radiation generated by the insertion devices that will generate the most critical thermal stress, with a peak power density of 55.7 kW/mrad² and a total power of 9.3kW at 500mA in the storage ring. The functions of the main components and their location in the layout are described. Computational fluid dynamics (CFD) and structural simulations, that have been carried out to verify the performance under the high heat loads generated by Sirius, are also detailed along with the limits of temperature and stress that have been employed in the design.

Poster WEPE06 [1.415 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE06

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paper received ※ 11 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017

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WEPE07

A High Heat Load Front-End for the Superconducting Wiggler Beamline at SSRF

SRF, photon, vacuum, radiation

327

Y. Li, D. Jia, S. Xue, M. Zhang, W. Zhu
SINAP, Shanghai, People’s Republic of China

A superconducting wiggler (SCW) will be first employed to generate high energy X-rays for ultra-hard X-ray applications beamline at Shanghai synchrotron radiation facility (SSRF). The front-end will handle a heat load of 44.7 kW with a peak power density of 45 kW/mrad², which is much higher than the commissioned ones at SSRF. Overall design of the high heat load front-end has been completed, including one short absorber with a length of 300 mm and three long absorbers longer than 500 mm. Long absorbers have been designed to be made by medium speed wire-cut electrical discharge machining (WEDM-MS) or electron beam welding (EBW). Thermal analyses of all absorbers have also been done to comply with the failure criteria of SSRF.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE07

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paper received ※ 08 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEPE09

Designing the Photon Beamline Frontends in the PETRAIII Extension Project

photon, vacuum, wiggler, damping

330

H. Krüger, W.A. Caliebe, M. Degenhardt, M. Hesse, F. Marutzky, H.-B. Peters, R. Peters, M. Röhling, H. Schulte-Schrepping, B. Steffen
DESY, Hamburg, Germany

The new insertion device beamlines in the PETRAIII extension project are arranged in three new sector types. Following will present the designs of the photon beamlines frontends for these sectors. The designs are based on the original design concept developed for the photon beamline frontends at PETRAIII. The aim of this generic approach was to minimize the number of specialized components for all beamlines. The existing girder concept allows a fast and reliable installation phase. The newly designed frontends aimed at using the same proven components and minimizing of the number of girder variations. There will be 4 new sectors with two undulator IDs in each sector. The canting angle between the undulators has been increased from 5mrad to 20mrad in difference to the generic beamlines. Additionally, two of the straight sections are modified. One straight section will be transformed in a side station sector with a 1mrad canting angle. The other straight section with the 40m long damping wiggler will be used as a single beamline with a hard X-ray source. The modifications of the original frontend design, the components and the deviations between the sector types are being presented.

Poster WEPE09 [4.799 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE09

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paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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WEPE10

Mechanical Design of Pulse-by-Pulse X-Ray Beam Position Monitor Using Diamond Heat Sink

detector, radiation, cathode, synchrotron-radiation

333

H. Aoyagi, S. Takahashi
JASRI/SPring-8, Hyogo, Japan

Funding: This work was partly supported by Japan Society for the Promotion of Science through a Grant-in-Aid for Scientific Research(c), No.20416374.
The pulse-by-pulse X-ray beam monitor equipped with microstripline structure had been developed at SPring-8. This monitor has a potential to function as (1) a pulse intensity monitor, (2) a pulse-by-pulse X-ray beam position monitor (XBPM), and (3) a pulse timing monitor. In insertion device beamlines, however, it cannot be used without further improvement because of heat-resistance problem. Therefore, we examined a pulse-by-pulse XBPM for insertion device beamlines by introducing heat resistance structure, which employed a diamond heat sink. Thermal finite element analysis was carried out to design an effective structure of a detector head and the holder. Evaluation tests of the prototype will be also presented in this contribution.

Poster WEPE10 [1.140 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE10

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paper received ※ 08 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEPE14

Minimizing Grating Slope Errors in the IEX Monochromator at the Advanced Photon Source

photon, experiment, ISOL, optics

336

M.V. Fisher, L. Assoufid, J.L. McChesney, J. Qian, R. Reininger, F.M. Rodolakis
ANL, Argonne, Illinois, USA

Funding: Work supported by the U.S. Department of Energy, Office of Science, under contract number DE-AC02-06CH11357.
The IEX beamline at the APS is currently in the commissioning phase. The energy resolution of the beamline was not meeting original specifications by several orders of magnitude. The monochromator, an in-focus VLS-PGM, is currently configured with a high and a medium-line-density grating. Experimental results indicated that both gratings were contributing to the poor energy resolution and this led to venting the monochromator to investigate. The initial suspicion was that a systematic error had occurred in the ruling process on the VLS gratings, but that proved to not be the case. Instead the problem was isolated to mechanical constraints used to mount the gratings into their respective side-cooled holders. Modifications were made to the holders to eliminate problematic constraints without compromising the rest of the design. Metrology performed on the gratings in the original and modified holders demonstrated a 20-fold improvement in the surface profile error which was consistent with finite element analysis performed in support of the modifications. Two gratings were successfully reinstalled and subsequent measurements with beam show a dramatic improvement in energy resolution.

Poster WEPE14 [2.115 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE14

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paper received ※ 10 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEPE15

High Frequency UHV Mechanical X-Ray Beam Chopper

vacuum, experiment, electron, controls

339

N González, C. Colldelram, C. Escudero, S. Ferrer
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

A mechanical chopper* has been designed and built to perform X-ray Absorption Spectroscopy (XAS) experiments with operating liquid electrochemical cells at NAPP end station of ALBA Synchrotron (BL24, CIRCE). When operating the cell, to separate the weak currents induced by the X-ray absorption process at the electrode in contact with the electrolyte (TEY signal) from the faradaic current set between the electrodes, the incoming beam must be chopped at a certain frequency (w). Then, using a lock in amplifier, the signal at this frequency w can be extracted and measured. When the chopper is located in the beam path, it produces pulses with a frequency w, modulating the TEY signal. The chopper developed at ALBA, with variable frequency, improves previous designs which used piezo-actuated choppers constrained to work at fixed oscillating frequencies**. The design consists of a slotted disk that spins around an axis by means of an UHV stepper motor. A LED and photodiode based UHV sensor ensures that frequency drifts do not affect the measurements. The motor is hold by an internally water cooled OFHC support, which allows long duration experiments at high speeds without stopping.
* Patent Registered
** Velasco-Velez et al, Science 2014, 346, 831-834

Poster WEPE15 [4.043 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE15

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paper received ※ 09 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEPE18

APS 2-ID Beamline, Upgrade to Canted Configuration

radiation, photon, synchrotron, undulator

342

D. Capatina, M.A. Beno, M.V. Fisher, J.J. Knopp, B. Lai, E.R. Moog, C. Roehrig, S. Vogt
ANL, Argonne, Illinois, USA

Funding: Work at the Advanced Photon Source is supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
To provide independent operation of the two 2-ID beamline experimental stations, a new canted beamline design is being developed. The constraint of keeping the existing front end limits the canting angle. The optimal canting angle was determined to be 400 urad and is achieved by using a permanent magnet. A coil is added to the canting magnet to provide a steering adjustment of maxi-mum 40 to 50 urad. In order to increase the beam separation as well as to provide power filtering and higher harmonics rejection for the downstream optics, a dual mirror system with focusing capability is used as the first optic at approximately 28 m from the center of the straight section. The inboard mirror (2.6 mrad) reflects the inboard beam outboard while the outboard mirror (4.1 mrad) reflects the outboard beam inboard. The beam presented to the dual mirror system is defined by two 1 mm x 1 mm apertures. The maximum power absorbed by each mirror is 200 W. Two vertically deflecting monochromators with minimum offset of 17 mm are located in the First Optical Enclosure on the outboard branch. The monochromator for the inboard branch is located in the corresponding experimental station.

Poster WEPE18 [3.357 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE18

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paper received ※ 07 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017

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WEPE22

F-Switch: Novel ’Random Access’ Manipulator for Large Numbers of Compound Refractive Lenses

operation, vacuum, FEL, alignment

345

G.M.A. Duller, D.R. Hall, A. Stallwood
DLS, Oxfordshire, United Kingdom

The F-Switch is a new concept of device for the manipu-lation of large arrays of 2D CRLs or similar disc-shaped optical elements (12mm dia, 2mm thick) under high vac-uum. Unlike the well-known transfocator devices the optical elements are randomly selectable. This enables a number of potential modes of operation, including the fine adjustment of focal length by adjusting the effective lens centre position when using CRLs or the use of some positions within the array to implement filters or reference foils. Actuation and guidance is achieved within the thickness of the element, so that the overall length of the device is minimised. The device has been in user operation on the I04 MX beamline at Diamond Light Source (DLS) since 2015. Another device is being assembled for use on the I11 beamline at DLS. It is also hoped to install another device on the I03 beamline. We present details of the mechanical design of the F-Switch and some examples of its operation.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE22

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paper received ※ 10 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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WEPE24

Live Animal Imaging Program at Bio-Medical Imaging and Therapy Facility at the Canadian Light Source

experiment, controls, synchrotron, radiation

348

M.A. Webb, G. Belev, C.D. Miller, T.W. Wysokinski, N. Zhu
CLS, Saskatoon, Saskatchewan, Canada
M. Gibbons
University of Saskatchewan, Saskatoon, Canada

The live animal imaging program at the Bio-Medical Imaging and Therapy (BMIT) facility at the Canadian Light Source has been developing for the last 5 years and continues to grow. It is expected to become a large portion of the user activity as numerous groups work towards the goal of live animal studies. Synchrotron-based imaging of live animals is an opportunity for great science that also brings challenges and specific requirements for the experimental end-station. The beamline currently provides basic support and has been improving the facilities available. For example, there have been changes to the lab to allow for longer rodent housing and improved housing during measurements. Remote control of heat lamps and of flow rate for gas anaesthesia allow a veterinarian or animal care worker to make adjustments without interrupting the imaging. Integration of user equipment such as heart/breathing monitoring and ultrasound equipment with the beamline systems can be used for gating control of imaging. Future improvements will be done with consultation with university veterinarians and the user groups.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE24

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paper received ※ 10 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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WEPE26

Upgrade the Beamline PF-AR NW14A for the High-Repetition-Rate X-Ray Pump-Probe Experiments

laser, experiment, focusing, optics

351

S. Nozawa
KEK, Ibaraki, Japan

We report the upgrade of the x-ray pump probe system to high repetition rate at the beamline PF-AR NW14A. A 400 fs high-repetition rate fiber laser system (Amplitude, Tangerine) was newly installed. The fiber laser system, which is operated at 1030 nm fundamental wavelength, is capable of reaching up to 0.1 mJ pulse with a repetition rate of 400 kHz. A higher harmonic generation system enlarges the spectral range from UV to mid-infrared. To increase the laser power density at a sample position, the x-ray was additionally focused by a polycapillary lens (Polycapillary Optics, XOS). The synchronization of X-ray and laser pulses is based on the RF master clock of the storage ring. The delay between the laser and the X-ray is controlled by changing the emission timing of the laser with a Trigger & Clock Delay Module (84DgR5CO1, CANDOX). The high repetition rate system increases experimental efficiency 400 times.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE26

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paper received ※ 11 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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WEPE28

Minimizing Experimental Setup Time and Effort at Aps Beamline 1-Id Through Instrumentation Design

detector, instrumentation, experiment, alignment

353

E. Benda, J. Almer, P. Kenesei, A. Mashayekhi, J.S. Okasinski, J.S. Park, R. Ranay, S.D. Shastri
ANL, Argonne, Illinois, USA

Sector 1-ID at the APS accommodates a number of different experimental techniques in the same spatial envelope of the E-hutch end station. These include high energy small and wide angle x-ray scattering (SAXS and WAXS), high energy diffraction microscopy (HEDM, both near and far field modes) and X-ray tomography. These techniques are frequently combined to allow the users to obtain multimodal data with 1 um spatial resolution and 0.05° angular resolution. Furthermore, these techniques are utilized while the sample is thermo-mechanically loaded to mimic real operating conditions. The instrumentation required for each of these techniques has been designed and configured in a modular way with a focus on stability and repeatability between changeovers. This not only allows the end station to be used for a greater number of techniques but it also results in a reduction of time and effort typically required for set up and alignment. Key instrumentation design features and layout of the end station are presented.

Poster WEPE28 [4.640 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE28

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paper received ※ 07 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEPE29

A Novel Filter Auto-Mounter for the BioXAS Beamlines at the CLS

detector, software, MMI, experiment

357

S.R. Carriere, D. Beauregard, B.A. Schneider, G.A. Steel, D.M. Taylor
CLS, Saskatoon, Saskatchewan, Canada

Funding: Canadian Foundation for Innovation
The BioXAS beam-lines are a recently completed group of beam-lines at the Canadian Light Source (CLS). The BioXAS EXAFS beam-lines host three 32-element germanium detectors. There was a need to introduce an exchangeable filter between the soller slits and the 32-element germanium detectors. It was further required to have an automated filter exchange system so that users could quickly vary filter thicknesses and types to determine the effect on the signal. An auto-mounting filter system was created to meet these requirements and allows users to quickly exchange filters without breaking experimental hutch lockup. The auto-mounter cartridge can hold up to ten slides that measure 100mm X 55mm in cross-section. The device inserts slides in an extremely small envelope between the soller slits and the liquid helium cryostat. The auto-mounter assembly also houses the stages required to actuate the soller slits laterally and vertically. During device commissioning we performed 800 consecutive successful filter exchanges as part of a stress test. The spatial constraints, mechanics, and fabrication of the device will be presented. Software development will also be discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE29

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paper received ※ 13 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEPE30

Introduction to Neutron Scattering Instruments - How are they Different?

neutron, scattering, shielding, GUI

360

R.W. Connatser
CLS, Saskatoon, Saskatchewan, Canada

Funding: The Canadian Light Source is funded by the Canada Foundation for Innovation, Natural Sciences and Engineering Research Council of Canada, the Government of Saskatchewan, and other funding bodies.
Neutron scattering is a complementary technique to x-ray scattering scientifically, but while there are similari-ties, there are some unique challenges in the design, con-struction, and operations. This poster will provide a brief description of neutron scattering, describe the technical components of spallation neutron scattering instruments, and discuss the engineering challenges found in the design and construction of these instruments.

Poster WEPE30 [0.506 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE30

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paper received ※ 11 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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WEPE36

Design, Construction and Commissioning of Two Highly Integrated Experimental Stations for Micro-Focusing Macromolecular Crystallography Beamlines at NSLS-II

experiment, focusing, synchrotron, diagnostics

363

D.K. Bhogadi, B.A. Andi, L. Berman, M. Carlucci-Dayton, M.R. Fuchs, J. Jakoncic, T. Langdon, J. Lara, B.S. Martins, S. McSweeney, S.F. Myers, D.K. Schneider, R.M. Sweet
BNL, Upton, Long Island, New York, USA

Funding: This work is supported by the US National Institutes of Health and the US Department of Energy.
We present the final engineering design and first commissioning results of two highly integrated experimental stations for the micro-focusing (FMX) and the highly automated (AMX) MX beamlines at the NSLS-II. These beamlines will support a broad range of biomedical structure determination methods. The experimental stations are designed and fabricated in-house to meet the challenging requirements resulting from the small beam size of 1 µm and the extremely short working distance of only 190 mm from the beam exit window to the FMX focal spot. The compact beam conditioning unit contains, within 140 mm, a beam position monitor, an attenuator, primary slits, an intensity monitor, a sub-millisecond shutter, and secondary slits. The diffractometers consist of an interchangeable dual axis air bearing-based goniometers with a target sphere of confusion of 100 nm, an on-axis microscope, an x-ray fluorescence detector and dynamic beam shaping slits. The end stations are integrated in a compact space on a granite machine bed with high modularity for future upgrades and extensions. Real-time autonomous robotic systems are being implemented for high through-put cryogenic sample handling.

Poster WEPE36 [2.369 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE36

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paper received ※ 11 September 2016 paper accepted ※ 05 October 2016 issue date ※ 22 June 2017

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WEPE37

Upgrade of the Super Advanced X-Ray Spectrometer (SAXES) of the RIXS Endstation for Better Resolution and Larger Detector Size

vacuum, GUI, detector, scattering

367

St. Maag, P. Hirschi, L. Nue, T. Schmitt, X. Wang
PSI, Villigen PSI, Switzerland

The RIXS endstation of ADRESS beamline at Swiss Light Source (SLS) is equipped with an ultrahigh resolution X-ray spectrometer. The spectrometer with a length of 5 m is installed on a rotating girder platform and allows varying scattering angles from 30° to 130°. The position of the CCD detector is longitudinally adjustable on the girder and vertically adjustable on a moving frame to allow an angle between 2° to 15° in the vertical plane. In the scope of a CCD camera upgrade, the modification of the vertical alignment of the guiding structure and ultra-high vacuum tanks became necessary. The new camera with a higher resolution and larger detector size weights around 25 kg. It is required to have a vibration amplitude well below 2 micrometer. We will present the critical design parameters of the upgrade, and the effort to increase bending stiffness of vacuum guide structure while keeping major geometry parameters. In addition, kinematic overdeterminacy was removed. After the upgrade we performed vibration measurements verifying that dynamic stability of the camera is improved, and design goal is reached. The site acceptance test confirmed the proper operation of the new mechanism.

Poster WEPE37 [7.016 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE37

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paper received ※ 09 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEPE38

The Mechanics of the Vekmag Experiment

detector, experiment, GUI, scattering

370

T. Noll
MBI, Berlin, Germany
F. Radu
HZB, Berlin, Germany

For the experiments at synchrotron radiation source BESSY II synchrotron of the Helmholtz-Zentrum Berlin a new end station and a new beam-line were developed and are now in user operation. The end station contains a 9-2-1 Tesla vectorial magnet and a cryostat with manipulator for the sample cooling and positioning, an UHV deposition chamber, and an UHV detector chamber. We report here on the technical design of the detector chamber which is placed below the magnet chamber and is also connected to the deposition chamber. Because of various constrains a sophisticated mechanics had to be developed to provide integrated functionality for both the detector holder and the sample transfer units. The detector unit consists of a tubular holder of 5 cm diameter which travels more than 60 cm vertically and exhibits an unlimited rotation degree of freedom of 360 degrees within the magnet bore. The sample transfer unit consists of a telescopic movement mechanism allowing for the sample holder vertical travel within the detector tubular holder. The functionality challenges and their resolve were addressed in an innovative mechanical design.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE38

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paper received ※ 09 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEPE39

Fabrication, Assembly, and Metrology Methods to Optimize an Adjustable Exit Slit for a Soft X-ray Beamline

feedback, vacuum, insertion, site

374

J.H. Takakuwa, C.D. Hernikl, T.M. Lipton, T.A. Stevens, T. Warwick
LBNL, Berkeley, California, USA

Exit slit edge geometry and paired edge parallelism can directly impact performance of a synchrotron beamline. At the same time, maximizing the performance of an existing design is often a financial and logistical necessity. The construction project for beamline 7.0.1 (BL7.0.1, COherent Scattering and MICroscopy (COSMIC)) at the Advanced Light Source (ALS) facility located at Lawrence Berkeley National Laboratory (LBNL) consists of two branch lines, each of which has vertical and horizontal slit assemblies. These assemblies were fabricated from a preexisting design, positively impacting project schedule and budget. Apart from orientation, the slit assemblies are identical. The goal for parallelism is ± 2 microns over the full 25 mm length. The each slit blade edge can travel ± 5 mm about the beam center with the resolution of a micron; slits can scan over that range with a nominal size of about 10 microns. A variety of fabrication and metrology techniques were implemented to maximize the performance of the current design and future areas of improvement in fabrication, metrology, and design were identified.

Poster WEPE39 [3.111 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE39

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paper received ※ 07 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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WEPE40

Two-rotation Mechanism for an in Vacuum Beamstop

vacuum, detector, scattering, experiment

378

J.B. González Fernández, C. Colldelram, A. Fontserè Recuenco, G. Jover-Mañas, J. Ladrera Fernández, M. Malfois, J.C. Martínez Guil
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

At Small-angle X-ray Scattering beamlines (SAXS), beamstops are needed to block the intense primary beam that has not been scattered by the sample in order to protect the detector from any damage. Beamstops are usually confined inside a vacuum tube minimizing air space between the sample and the detector. For certain experiments, a motorized beamstop is required to achieve a precise positioning in different regions of the detector active area. ALBA has developed a new motorized beamstop* consisting of a two-rotation mechanism inside vacuum that composes a movement able to cover all range of the active area of the detector. The presented solution involves a main rotation reached by a gear and a worm drive actuated by a stepper motor and a second rotation relative to the main one produced by a piezo rotation stage. For each position appears two different solutions. This characteristic permits take two equivalent images in the detector with the same beamstop position but different orientation in the beamstop support; thus permitting the compensation of the support shadow on the active area of the detector.
* Patent Registered

Poster WEPE40 [2.217 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE40

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paper received ※ 08 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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THAA02

Mechanical Engineering of a Cryo STXM at CLS

vacuum, laser, cryogenics, radiation

381

C.N. Regier, A.F.G. Leontowich, D.M. Taylor
CLS, Saskatoon, Saskatchewan, Canada

A Scanning Transmission X-ray Microscope (STXM) is a useful imaging tool, but its application to certain types of samples is limited by significant rates of x-ray damage to the sample. Cooling samples to liquid nitrogen temperatures can delay radiation damage, but must be done in a vacuum environment to prevent rapid formation of ice on the sample. The Canadian Light Source (CLS) has constructed a Cryo-STXM, which can maintain sample temperatures at 100 K in an ultra-high vacuum environment and rotate the samples in the beam to collect tomographic data sets. This presentation will discuss the mechanical engineering aspects of the development of this Cryo-STXM including the finite element analysis (FEA) for stresses and vibrations, and present the performance parameters being achieved by the instrument.

Slides THAA02 [4.645 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-THAA02

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paper received ※ 11 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

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THAA03

Mechanical Design of New Dual Pinhole Mini-Beam Collimator With Motorized Pitch and Yaw Adjuster Provides Lower Background for X-Ray Crystallography at GMCA@APS

background, scattering, photon, software

387

S. Xu, R. Fischetti, O. Makarov, S.A. Stepanov, N. Venugopalan
ANL, Argonne, Illinois, USA

Funding: GM/CA@APS has been funded in whole or in part with Federal funds from the National Cancer Institute (ACB-12002) and the National Institute of General Medical Sciences (AGM-12006).
The GM/CA developed, quad-mini-beam collimator[*,**], advanced rastering and vector data-collection software tools[***], have enabled successful data collection on some of the most challenging problems in structural biology. There are two main sources of X-ray scattering (besides the sample) that reach the detector, contribute to back-ground and limit data resolution. These are scattering within the collimator that escapes the exit aperture and air-scattering of the direct beam before it terminates in the beamstop. Scattering from the collimator can be reduced by decreasing the exit aperture size. A quad mini-beam collimator was built consisting of 5/50, 10/70, 20/100 and 150/300 µm beam defining/exit aperture combination, respectively. Previous collimators were positioned in the X-ray beam by two motorized translational motions and two manual angular adjustments via a kinematic mount. Due to reduced tolerance in the new design, aligning each of the pin-hole combinations to high-precision required motorizing both translational and angular motions. Design and con-struction of the improved mini-beam collimator and the extent of background reduction will be discussed.
* Fischetti, et al.,JSR 16, 217-225 PMCID 2725011
** S. Xu, et al, AIP 1234, 897 - 900 (2010)
*** Hilgart, et al, J Synchr. Radiat. 2011:717-22. doi: 10.1107/S0909049511029918. Epub 2011 Jul 29

Slides THAA03 [6.682 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-THAA03

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paper received ※ 10 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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THAA04

Upgrading a Transmission SAX/WAX Beamline to Allow High Quality GISAX/GIWAX Experiments for Soft Matter Thin Films

detector, vacuum, scattering, alignment

390

A.R. Marshall
DLS, Oxfordshire, United Kingdom

The project required a sample environment to deliver experiments in vacuum or helium, with high humidity, including capacity to use aggressive solvents. The compact, transportable system incorporates a high precision in-vacuum manipulator/ positioning stage (with repeatability better than1 µm/ 1 mdeg) allowing for multiple sample configurations. Current sample mounts include in-situ film formation (Doctor Blade), thermal annealing/drying heater stage, sample cooling and multiple sample stages; the system has been designed to accommodate many sample substrate formats. The existing end station camera system has been upgraded to include two, in-vacuum, WAXS and SAXS area detectors, which are custom builds based on the Pilatus 6M. The SAX detector module includes three in vacuum, independent ,configurable SAXS beam stop manipulators to block GISAXS transmitted, reflected and specular flare as well as isotropic and anisotropic SAX, a photon sensitive detector shutter plate is included. The 4 mm diameter tungsten beamstops each include a miniature photodiode to measure beam intensity and can be positioned to within 10 µm precision in X and Y over 300 mm x 250 mm motion range.

Slides THAA04 [6.245 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-THAA04

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paper received ※ 09 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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THBA01

An Endstation with Cryogenic Coils Contributing to a 0.5 Tesla Field and 30-400k Sample Thermal Control

controls, hardware, vacuum, scattering

396

G.A. Scharfstein, D. Arbelaez, J.-Y. Jung
LBNL, Berkeley, California, USA

The Engineering Division of Lawrence Berkeley National Laboratory presents a design for an End Station to enable X-ray Photon Correlation Spectroscopy (XPCS), which is a method to study temperature-induced fluctuation in hard and soft condensed matter systems. XPCS, when applied to a magnetic system, can yield information about how domains fluctuate as the system goes through a phase transition; these phase transitions can occur at low temperatures (< 100K) and at an applied magnetic field. Therefore, requirements for the End Station include a 0.5 Tesla field at the sample and temperature control of the sample from 30K to 400K.

Slides THBA01 [10.200 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-THBA01

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paper received ※ 13 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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FRAA01

Engineering Challenges on the I14 Nanoprobe Beamline

vacuum, detector, optics, cryogenics

398

A. Peach, F. Cacho-Nerin, J. Parker, P.D. Quinn
DLS, Oxfordshire, United Kingdom

An overview of the double branch 185m I14 Nano-probe beam-line under construction at DLS will be presented together with the end-station design in further detail. The end station consists of a split vacuum vessel containing a KB mirror configuration (at UHV) and the sample environment (at HV) which is just 50mm from the end of the final KB optic. An in-vacuum detector is mounted between the KB and the sample whilst two externally mounted detectors will operate between 0.25m & 3m from the sample. Four cryogenic samples can be brought into the vessel at a time and transferred remotely to the sample position with cooling provided by a Helium pulse tube cooler. With an initial 50nm size beam, stability is absolutely critical and careful attention has been paid in the design to mitigate any thermal and structural sources of vibration. An array of interferometers reference the KB mirrors and sample position and will be used to actively correct for any drifts. The very tight space constraints involved have greatly increased the complexity and duration of the design but testing of prototypes is now underway. The system is scheduled for build and test through the Autumn 2016.

Slides FRAA01 [15.581 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-FRAA01

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paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017

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FRAA03

Mechanical Design of MIRAS, Infrared Microspectroscopy Beam Line at ALBA Synchrotron

vacuum, simulation, extraction, radiation

403

L.R.M. Ribó, C. Colldelram, A. Crisol, A.A. Gevorgyan, R. Monge, J. Nicolás, L. Nikitina, M. Quispe, I. Sics, I. Yousef
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
P. Dumas
SOLEIL, Gif-sur-Yvette, France
G. Ellis
CSIC, Madrid, Spain

The infraredμspectroscopy beam line has been an In House project fully developed at ALBA as a result of a collaboration of different teams during the period 2014 where the design started to 2016 It is composed by a retractile mirror to extract the IR light from the bending magnet radiation and a system of 8 transport mirrors located by positioning systems designed for a high stability performance, to transport the extracted light outside the tunnel until the first End Station

Slides FRAA03 [5.469 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-FRAA03

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paper received ※ 09 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

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FRBA01

A New Crystal Bender for the ID31 Laue-Laue Monochromator

SRF, controls, cryogenics, vacuum

409

M. Magnin-Mattenet, P. Got, V. Honkimaki, A. Vivo
ESRF, Grenoble, France

The ID31 beamline is able to provide X-Ray energies ranging from 20 to 150keV. The energy range 50-150keVis covered by a Laue-Laue monochromator located at 100meters from the source. Two asymmetrically cut Si crystals equipped with benders, based on a new concept, provide an energy resolution ranging from few hundreds of eV down to the Darwin width of few eV. The bender principle, design, manufacture and first commissioning will be described. The virtual source, produced with a white beam transfocator, can be before or after the monochromator. Therefore the bending mechanism must allow both concave and convex configuration with bending radius from 20m to infinite. Each bender is equipped with two home made piezo-jacks in close loop with capacitive sensor. The system is liquid Nitrogen cooled. The thermal behaviour will be described in detail and thermo-mechanical finite element analysis presented.

Slides FRBA01 [11.565 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-FRBA01

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paper received ※ 09 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017

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FRBA02

The Nanobender: A New X-Ray Mirror Bender With Nanometer Figure Correction

optics, focusing, controls, vacuum

413

C. Colldelram, J. Nicolás, P. Pedreira, L. Ribó, C. Ruget, I. Sics
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
J.M. Casalta Escuer, C. Martín-Nuño Gonzalez, A. Tomas Justribo, D. Úbeda Gonzalez
SENER, Cerdanyola del Vallès, Spain

Over time X-Ray mirrors are demanded for better focusing, closer to sample refocusing, spot size as well as better beam uniformity at sample position. Based on the experience of ALBA Phase I beam lines a new alter-native design of a mirror bender* is proposed. The system includes two main functionalities: the mirror bender mechanism and mirror figure error correc-tion. Both mechanisms are based on the introduction of a force constrain on the mirror surface instead of a geometrical one. As being based on a force mechanism they could reach high resolution and especially for the correctors which can achieve nanometre resolution. The correctors are designed to provide high force stability in the mirror side, eliminating the crosstalk between bending and figure correction, and minimizing the sensitivity to drifts. With such controlled deformation of the mirror substrate it is possible to obtain the desired surface figure not only to correct mirror figure errors but also to adapt it to the incident wavefront, thus becoming adaptive system. The mechanical solutions are presented which are able to correct mirror surfaces with a resolution of 1 nm reaching slope errors below 100 nrad.
* Patent Registered

Slides FRBA02 [4.766 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-FRBA02

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paper received ※ 03 October 2016 paper accepted ※ 08 May 2017 issue date ※ 22 June 2017

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FRBA03

Design of the Diamond Light Source DMM for the VMXi Beamline

vacuum, optics, GUI, radiation

420

D.J. Butler, J.H. Kelly
DLS, Oxfordshire, United Kingdom

A Double Multilayer Monochromator (DMM) was designed in-house for the VMXi beam-line. This paper describes the novel engineering solutions employed to build a high stability instrument. PiezoMotor® actuators drive sine-arm Bragg axes for both optics providing the coarse and fine motion in a single actuator. The long translation of the second multilayer is driven externally via a linear shift to eliminate in-vacuum pipe & cable motions. A high stability air bearing translates the whole DMM across the two multilayer stripes. The optics are water cooled via an Indium / Gallium eutectic alloy bath to minimise coupled vibrations. The DMM is operational on the VMXi beam-line, experimental and performance data is presented.

Slides FRBA03 [8.899 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-FRBA03

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paper received ※ 09 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017

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