MEDSI2018 - List of Keywords (controls)

Paper	Title	Other Keywords	Page
TUPH10	Interfaces with Operational Systems APS Upgrade Project Removal and Installation	vacuum, interface, storage-ring, monitoring	43
	R.W. Connatser ANL, Argonne, Illinois, USA
	Funding: Created by UChicago Argonne, LLC, Operator of Argonne National Laboratory. Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. A critical time for the APS Upgrade Project is the twelve month dark period in which the current accelerator, front ends, and insertion devices will be removed and the new MBA will be installed. In addition to the technical interfaces, there are a significant number of operational support systems and utilities that will be affected. For the dark period to be a success, these additional interfaces need to be described and their interaction with the removal and installation processes defined. This poster describes many of these additional systems and their interfaces.
	Poster TUPH10 [0.354 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH10
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPH27	Structure Design of a Multi-Wire Target	vacuum, target, alignment, neutron	92
	X.J. Nie, H.Y. He, L. Kang, L. Liu, G.Y. Wang, T.G. Xu, D.H. Zhu IHEP, Beijing, People's Republic of China J.X. Chen, C.J. Ning, J.L. Sun, A.X. Wang, J.B. Yu, Y.J. Yu, J.S. Zhang CSNS, Guangdong Province, People's Republic of China
	Introduce a structure design of a Multi-Wire Target. The plan of wire alignment was decided by analysis. The wire tightening device with interlaced alignment was used to solve the wire alignment in narrow space. The vacuum chamber was designed by optimization. The displacement pickup was used to make the movement control of translation stages.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH27
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPH33	Vibration Measurement & Simulation of Magnet & Girder in SESAME	experiment, software, quadrupole, dipole	111
	M.M. Al Shehab SESAME, Amman, Jordan
	Funding: IAEA SESAME (Synchrotron-light for Experimental Science and Applications in the Middle East) started operation in January 2017. During the design phase several FEA studies were performed to optimize the girder and the magnet design taking into account all the constraints such as the tight spacing between magnets, the vacuum chamber installation interactions with the magnets. In this paper the experimental and Numerical modal analysis are presented as well as the result comparison between the experimental and simulation work.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH33
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPH43	The LNLS Metrology Building - Environmental Control Results	instrumentation, optics, synchrotron, operation	143
	H.G.P. de Oliveira, C.S.N.C. Bueno, L. Sanfelici, M.B. da Silva LNLS, Campinas, Brazil
	Funding: Ministry of Science, Technology, Innovation and Communication (MCTIC) Modern synchrotron light sources require high mechanical stability throughout its facilities, frequently demanding characterization processes in theμand nanometer scales. In this context, the Brazilian Synchrotron Light Laboratory (LNLS) built a new facility with several controlled environment rooms to minimize disturbances during optical and mechanical metrology procedures and to support advanced instrumentation development for the new Sirius' beamlines. The building design imposed very strict requirements regarding temperature, humidity and particles. This work presents the environmental control validation results and the floor vibration assessment enlightening the influence of the building machinery. Temperature variations below ± 0,1 °C were successfully achieved for all rooms, relative humidity is also better than 50 ± 5 % and the floor RMS displacement did not exceed 15 nm. The building is fully operational since early 2017 and currently hosting several tests on monochromators, mirrors, front-ends and many other systems for the Sirius beamlines. Metrology, environmental control, vibration assessment
	Poster TUPH43 [2.557 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH43
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEOAMA01	The Status of the New High-Dynamic DCM for Sirius	operation, vacuum, synchrotron, experiment	147
	R.R. Geraldes, R.M. Caliari, G.B.Z.L. Moreno, L. Sanfelici, M. Saveri Silva, H.C.N. Tolentino, H. Westfahl Jr. LNLS, Campinas, Brazil T.A.M. Ruijl, R.M. Schneider MI-Partners, Eindhoven, The Netherlands
	Funding: Ministry of Science, Technology, Innovation and Communication (MCTIC) 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 genera-tion machines, with their small emittances, start to bring higher stability performance requirements, in spite of factors as high power loads and variations, high radiation levels, ultra-high vacuum compatibility and vibration sources. In response to that, an innova-tive concept of a high-dynamic vertical DCM (Double Crystal Monochromator) with angular range between 3 and 60 degrees (equivalent to 2.3 to 38 keV with Si(111)) has been developed at the Brazilian Synchro-tron Light Laboratory. A highly repeatable dynamic system, with servo control bandwidth of 250 Hz, has been achieved and will be installed at Sirius macromo-lecular crystallography beamline ' MANACA ' still in 2018. The complete offline results of the in-vacuum cryocooled high-dynamic DCM, showing stability between crystals around 15 nrad RMS up to 2.5 kHz, even during the Bragg angle motion for flyscans, are presented.
	Slides WEOAMA01 [7.575 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEOAMA01
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEOAMA02	Sample Stabilization for Tomography Experiments in Presence of Large Plant Uncertainty	experiment, SRF, feedback, simulation	153
	T. Dehaeze, C.G.R.L. Collette PML, Liège, Belgium C.G.R.L. Collette ULB - FSA - SMN, Bruxelles, Belgium T. Dehaeze, M. Magnin-Mattenet ESRF, Grenoble, France
	A new low emittance lattice storage ring is under construction at the ESRF. In this new instrument, an upgraded end station for ID31 beamline must allow to position the samples along complex trajectories with a nanometer precision. In order to reach these requirements, samples have to be mounted on high precision stages, combining a capability of large stroke, spin motion, and active rejection of disturbances. First, the end station will be presented with the associated requirements. However, the precision is limited by thermal expansion and various imperfections that are not actively compensated. Our approach is to add a Nano Active Stabilization System (NASS) which is composed of a 6DoF Stewart platform and a 6 DoF metrology system. A 3D model of the end station updated with experimental data is developed. As the mass of the samples may vary by up to two orders of magnitudes, robust control strategies are required to address such plant uncertainty. The proposed control strategy are presented and applied on the developed model by conducting time domain simulations of tomography experiment in presence of instrumentation noise and system uncertainty.
	Slides WEOAMA02 [1.721 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEOAMA02
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEOPMA05	Application of Industry Recognised Development Tools and Methodologies, such as Six Sigma to Facilitate the Efficient Delivery of Innovative and Robust Engineering Solutions at Synchrotron Facilities	synchrotron, hardware, experiment, factory	184
	S. A. Macdonell DLS, Oxfordshire, United Kingdom
	Synchrotron facilities play a key part in the delivery of world leading science to facilitate research and development across multiple fields. The enabling technology designed by engineers at these facilities is crucial to their success. The highly academic nature of Synchrotron facilities does not always lead to working in the same way as a commercial engineering company. However, are the engineering requirements at Synchrotrons different to commercial companies? Exploring the parallels between research and commercial companies, can we show that the tools and methodologies employed could benefit engineering development at Synchrotrons? This paper provides a theoretical discussion on the commonality between engineering developments at Synchrotron facilities compared to commercial companies. How methodologies such as Design for Six Sigma and in particular tools such as stakeholder analysis, functional tree analysis, FMEA and DoE could be utilised in the design process at Synchrotrons. It also seeks to demonstrate how implementation could aid the development of innovative, robust and efficient design of engineering solutions to meet the ever-increasing demands of our facilities.
	Slides WEOPMA05 [1.633 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEOPMA05
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPH06	Upgrade of Magnetic Measurements Laboratory at ALBA Synchrotron	hardware, software, TANGO, MMI	211
	J. Campmany, F. Becheri, J. Marcos, V. Massana, R. Petrocelli, L. Ribó ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	Along 2017 and 2018, a complete upgrade of ALBA magnetic measurements lab has been done. Upgrade has affected both hardware and software. Regarding hardware, a relevant innovation has been the replacement of DC motors by step motors in new Hall probe bench and in flipping and rotating coil benches. Up to now, this kind of continuous measurements usually were done using DC motors because step motors were considered unable to fulfil the required smoothness of the movement. However, current step motors state of the art made them compatible with DC. In our case, we have tested the performance of upgraded benches and they reach the same accuracy, or even better. Regarding software, we have unified all motion drivers to ICEPAP and all control system to Tango package, taking advantage of the last ICEPAP firmware. That includes the feature of triggering data acquisition system by signals generated from different axis that can be selected by software.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH06
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPH08	Application of Remote Installation and Measurement Smart Vehicle in Accelerator	alignment, monitoring, radiation, operation	217
	J.X. Chen, H.Y. He, C.J. Ning, A.X. Wang, Y.J. Yu, J.S. Zhang, D.H. Zhu CSNS, Guangdong Province, People's Republic of China L. Kang, L. Liu, X.J. Nie, G.Y. Wang, J.B. Yu IHEP, Beijing, People's Republic of China
	Funding: National Natural Science Foundation of China, No.11375217 The installation, alignment measurement and vibration monitoring of the accelerator equipment are cumbersome. In order to reduce the work intensity and exposure time of personnel, this paper has developed a smart vehicle that can automatically walk and automatically adjust the horizontal in the accelerator or beam line area. The smart vehicle can move forwards, sideways, oblique lines, rotations and combinations, and can automatically adjust the level according to different terrains. The auto-leveling accuracy is better than 0.001 degrees. By installing vibration measuring equipment or collimating equipment on the vehicle platform, vibration testing and collimation measurement of the equipment in the accelerator or beamline device can be performed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH08
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPH17	Adjusting Mechanism of Inter-Undulator Section for PAL XFEL	undulator, cavity, FEL, quadrupole	241
	H.-G. Lee, J.H. Han, S.-H. Jeong, Y.G. Jung, H.-S. Kang, D.E. Kim, H.-S. Lee, S.B. Lee, B.G. Oh, K.-H. Park, H.S. Suh PAL, Pohang, Kyungbuk, Republic of Korea
	Pohang Accelerator Laboratory (PAL) has developed a SASE X-ray Free Electron Laser based on 10 GeV linear accelerator. The inter-Undulator (IU) support section was developed to be used in the intersections of the Undulator Systems. The IU supports consist of phase shifter, quadrupole magnet with mover, beam loss monitor, cavity BPM with mover, two corrector magnets and vacuum components. The adjusting mechanism of IU Support has manual alignment system to be easily adjusting the component. The mover of quadruple magnet and cavity BPM with submicron repeatability has auto-adjusting systems with stepping motor. The mover main specifications include compact dimensions and a ±1.5 mm stroke in the vertical and horizontal direction. Linear motion guide based on 5-phase stepping motors have been chosen. This paper describes the design of the stages used for precise movement and results of mechanical measurements including reproducibility will be reported.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH17
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPH30	Energy Efficient Air-Conditioning System Design	ECR, photon, linac, operation	270
	Z.-D. Tsai, W.S. Chan, C.S. Chen, Y.Y. Cheng, Y.-C. Chung, C.Y. Liu NSRRC, Hsinchu, Taiwan
	At the Taiwan Light Source (TLS) and Taiwan Photon Source (TPS), several studies related to energy savings in air-conditioning systems are underway, where heat recovery has been considered for laboratory applications. The performance of a run-around coil has demonstrated that heat recovery plays an important role in energy conservation. Based on this design of an air handling unit (AHU), we enhance this model by combining it with enthalpy control for seasonal changes. Here, we construct a new AHU to verify the practical impact of energy usage. The improvements show that both mechanisms can be achieved simultaneously.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH30
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPH34	Research on Active Vibration Isolation System	ISOL, quadrupole, damping, ground-motion	280
	J.B. Yu, L. Kang IHEP, Beijing, People's Republic of China J.X. Chen, H.Y. He, L. Liu, X.J. Nie, C.J. Ning, A.X. Wang, G.Y. Wang, Y.J. Yu, J.S. Zhang, D.H. Zhu CSNS, Guangdong Province, People's Republic of China
	Funding: work supported by Natural Science Foundation of China(11375217) Based on the increase of accuracy requirements coming from increasing instrument precision, advanced isolation components are required, and active vibration control method is proposed. This paper mainly shows the experimental system, and some work has been done at present. Now that we are still at the beginning research of active vibration isolation, we hope it will be steadily used in the support systems of some precision equipment and instruments.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH34
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THOPMA01	Piezo Technology in Synchrotron	synchrotron, laser, resonance, vacuum	321
	B. Laluc, T. Maillard, A. Riquer CTEC, MEYLAN, France
	Synchrotrons need robust products. That is why the association of piezo actuator technology and CEDRAT TECHNOLOGIES (CTEC) know-how has been successful for synchrotron mechanisms projects. The technological brick is the "Amplified Piezo Actuator" (APA®) tested and widely used in space applications, it is often implemented in CTEC piezo mechanisms and provides a high level of robustness. Modifying the layout and the number of APA® allows several needs to be addressed within beamlines. Three applications developed in collaboration with the EMBL, PAL and SOLEIL will be presented in this paper. The first application consists of cutting a beam with a piezo shutter. The maximum beam diameter is 3 mm. The second mechanism allows the energy of a beam to be modified by using a series of piezo actuated filters. And the last mechanism aims at modifying the beam section shape with an active piezo micro-slits mechanism. "Synchrotron SOLEIL" "EMBL ESRF Grenoble" "www.cedrat-technologies.com"
	Slides THOPMA01 [11.933 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THOPMA01
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH02	LCLS Pulse Selector, A Multifunction Shutter for the LCLS-I 120 Hz FEL	timing, operation, FEL, MMI	336
	R. Armenta, E.A. Paiser SLAC, Menlo Park, California, USA
	The LCLS Pulse Selector was designed to pick specific pulses and reduce the repetition rate of the 120Hz LCLS pulse train in support of widely diverse, user defined experiments. It utilizes two rotating parallel plates to alternately transmit and block pulses in a single sweeping motion. A conventional stepper motor connected to the plates provides the rotation. The key to the system is its sophisticated timing scheme. Each sweep of the shutter is synchronized (with a precise delay) with the event codes normally generated with each pulse for data acquisition use. This shutter system has the capability of reducing the repetition rate of the LCLS x-ray to any frequency less than or equal to 60Hz in order to select a single pulse of LCLS x-ray beam at 120Hz. Since its installation, the pulse selector has been used in multiple experiments with great success providing independent pulse selection to individual beamlines at the same time.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH02
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH03	The XBPM Project at MAX IV Frontends, Overview and First Results	storage-ring, shielding, photon, high-voltage	340
	A. Bartalesi MAX IV Laboratory, Lund University, Lund, Sweden
	All the frontends installed on the 3GeV storage ring at MAX IV are equipped with two X-Ray Beam Position Monitors. Having recently finished the installation of the acquisition system, it was possible to record and analyse data. This presentation describes the setup and shows the first results.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH03
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH04	Fast X-Ray Beam Intensity Stabilization for Absorption Spectroscopy and Spectromicroscopic Imaging	focusing, vacuum, feedback, photon	343
	M. Birri, D. Ferreira Sanchez, D. Grolimund, B. Meyer, V.A. Samson PSI, Villigen PSI, Switzerland
	The characteristics of synchrotron sources and beamline optics commonly result in systematic and random variations of the delivered photon flux. In X-ray absorption based measurements, for example, monochromator glitches [1] or the energy dependent gap size of small gap in-vacuum undulators [2] are intrinsic sources for changes in the intensity of the incoming photon flux (I0), however many types of x-ray experiments would benefit from a constant I0. Monochromator Stabilization (MOSTAB) is a common solution for most synchrotron beamlines with double crystal monochromators. This approach is based on the relative alignment of the two monochromator crystals (dynamic detuning) to stabilize beam intensity or position. Obviously, any change in angular alignment of the monochromator crystals will also induce deviations in the beam trajectory and photon energy distribution. At the microXAS undulator beamline of the SLS, we have implemented a system to achieve a constant I0. Two wedge-shaped absorbers produce a spatially uniform attenuation preserving the beam shape without introducing changes in its trajectory. Hardware, control loop and system performance will be presented. [1] F.Bridges, Nuclear Instruments and Methods in Physics Research A257 (1987) 447-450. [2] H.Kitamura, J.Synchrotron Rad. 7 (2000), 121-130.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH04
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH15	A New High Precision, Fully Motorized 6-DoF Sample Stage for the ALBA PEEM Endstation	GUI, resonance, vacuum, feedback	368
	N. Gonzalez, L. Aballe, A. Carballedo, C. Colldelram, M. Foerster ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	A new 6-DOF sample manipulator has been designed for the ALBA Synchrotron PhotoEmission Electron Microscopy (PEEM) experimental station, based on a commercial Elmitec LEEM 3. The new design includes full motorization of all 6 axes with position feedback, no backlash, and maximized stability, crucial to achieve the best spatial resolution of down to 8 nm (in so-called LEEM mode). The in-plane longitudinal and transversal motions with sub-micron resolution are based on high precision linear guides, while the pitch and roll stages (sample tilt), guided by angular guides, are actuated by a double-flexure system, which enhances the overall rigidity of the system. The vertical stage is composed by a high rigidity recirculating roller screw and cross roller guides. Finally, 360° yaw rotation is supplied by a differentially pumped commercial rotary stage. On top of the stage, the sample support is mounted on a customized DN63CF flange. This support keeps the original functionalities of the sample manipulator and holders, with 6 independent electrical contacts, and the possibility to heat the sample up to 2000 K and cool it to 100 K with an improved liquid nitrogen cooling system.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH15
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH16	Compact Mirror Bender With Sub-Nanometer Adaptive Correction Control	optics, synchrotron, focusing, feedback	371
	N. Gonzalez, C. Colldelram, J.B. González Fernández, J. Juanhuix, J. Nicolás, C. Ruget ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	Funding: This work is partially funded by MINECO under contract FIS2015-66328-C3-2-R and by ERDF funds. We present a compact mirror bender with dynamic surface correction. The system is the evolution of an in-house development and will be the default focusing system for the new ALBA beamlines. The bender is now more compact and can introduce stronger curvatures, as required for microfocus applications. It allows for in-situ correction of the mirror surface, with resolution and stability below one nanometer. The bender can compensate parasitic deformations caused by thermal bumps, changes of focus, or stresses appeared during installation or bakeout. The system includes two torque actuators at the ends of the mirror as well as a number of correctors along the mirror length, capable of introducing high order surface corrections. The bending curvature is actively stabilized, by a feedback loop that controls the applied force, to the equivalent of 0.25 nm rms in a 500 mm long mirror. The figure correctors provide up to 20N push-pull force with resolution below .001 N. They combine elastic and magnetic forces to improve their stability.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH16
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH17	NCD-SWEET Beamline Upgrade	detector, optics, experiment, electronics	374
	J.B. González Fernández, C. Colldelram, S. Ferrer, A. Fontserè Recuenco, A.A. Gevorgyan, N. Gonzalez, G. Jover-Mañas, C. Kamma-Lorger, M.L. Llonch, M. Malfois, J.C. Martínez Guil, Y. Nikitin, G. Peña, L. Ribó, I. Sics, E. Solano, J. Villanueva ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	The SAXS/WAXS Experimental End sTation (NCD-SWEET) at ALBA Synchrotron has undergone major improvements in three main areas, beam performance, SAXS detector data quality and beamline operability, in order to perform state-of-the-art SAXS/WAXS experi-ments. A new channel-cut monochromator system has improved the beam quality and stability, with current vibration amplitudes under 1% of the beam size. Two sets of refractive beryllium lenses have been installed for focussing the beam. One of the sets allows to microfocus the beam size. Besides this, the former SAXS CCD detector has been replaced by a single-photon counting pixel detector, a Piltatus3 S 1M. In the end station, a full re-design of the mechanical elements with sub-micron resolution movements together with the installation of new equipment has been completed, resulting in an improved beamline configuration, and a faster and safer rearrangement of the flight tube length. New upgraded configuration also allows for GISAXS experiments. Finally, other auxiliary improvements have been done in areas like radiation protection, air conditioning, health and safety, cable management, electronics and control.
	Poster THPH17 [5.848 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH17
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH19	Engineering Design of the XPD & PDF Beamline Sample Environment for Safe Experimental Use of Hazardous Gases	experiment, FEL, operation, GUI	379
	E. Haas, M. Abeykoon, S. Buda, E.D. Dooryhee, S. Ghose, C. Stelmach, J.T. Trunk BNL, Upton, Long Island, New York, USA
	Funding: U.S. Department of Energy The X-ray Powder Diffraction (XPD) and Pair Distribution Function (PDF) beamlines located at the 28-ID beam port at NSLS-II require a means for safely supplying, containing, and exhausting hazardous gases to and from experimental samples. These beamlines plan to use a wide range of flammable, toxic, and reactive gases for in-situ studies of catalytic and chemical reactions. Since many of the gases are hazardous, a low-cost, robust means is needed to safely supply gases to samples, position the samples quickly, accurately, and remotely, collect scattered X-rays over a wide-angle without distortion, and exhaust the gases safely. Ideally, the sample environment should also allow rapid sample set-up and change-out. The PDF/XPD system includes a sample holder, internal beam stop, sample chamber, and stages that provide eight degrees of freedom. A specially-designed window is also included for maximum X-ray transmission at minimum cost. Sensors, flow metering devices, and circuitry are included to provide proper purging, control hazardous and dilution gas flows, and integrate all of the safeguards needed to assure safe operation. Note to MEDSI reviewers: "Contributed Oral" presentation is indicated above, however a poster presentation can be generated by contacting the author via email at haas@bnl.gov if this is preferred.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH19
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH23	Interlock System for a Magnetic-Bearing Pulse Selector	PLC, GUI, software, operation	385
	H. Ishii, J. Adachi, T. Kosuge, H. Tanaka KEK, Ibaraki, Japan
	A hybrid operation mode that enables beam time sharing between single-bunch users and multi-bunch users has been introduced in the PF 2.5GeV ring of KEK (High Energy Accelerator Research Organization). A pulse selector, a kind of optical chopper, is used to permit the passage only of an X-ray pulse that comes from a single bunch part of the hybrid filling pattern. We have developed a new pulse selector with a magnetic bearing. It comprises a rotating dish-shaped disk, a phase-lock-loop (PLL) controlled motor system, and other parts . The speed and phase of the rotating disk is controlled by TTL signals obtained by dividing the RF signal of the PF 2.5 GeV ring. A commercially available motor driver was designed for lower loading. The rotating disk for the pulse selector is heavier than those disks used previously in which air bearings are used. A rapid deceleration of the rotation causes problems through a large current flow back to the motor driver. In this study, we describe the prototype of a programmable logic controller based on an interlock system to avoid the current flow back problem in the pulse selector.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH23
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH27	Mechanical Design of a Compact Non-invasive Wavefront Sensor for Hard X-rays	optics, monitoring, alignment, photon	394
	S.P. Kearney, L. Assoufid, W.C. Grizolli, T. Kolodziej, K. Lang, A. Macrander, X. Shi, D. Shu, Yu. Shvyd'ko, W. Wojcik ANL, Argonne, Illinois, USA
	Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DEAC02-06CH11357. Abstract This work describes mechanical design of a prototype compact wavefront sensor for in situ measurement and monitoring of beam wavefront of hard x-ray beamlines [1]. The system is based on a single-shot grating interferometer [2, 3] and a thin diamond single-crystal beam splitter. The beam splitter is designed to be inserted in the incident and oriented to diffract a fraction of the incident beam bandwidth into the interferometer, for wavefront measurement and reconstruction. The concept is intended to study the feasibility of a non-invasive wavefront sensor for real time wavefront monitoring and diagnostics, with possible application in adaptive mirrors for wavefront preservation and control [1, 4]. The design focus was on compactness to enable easy portability and implementation in a beamline. * L. Assoufid et al., Rev. Sci. Instrum., 87(5), 052004, 2016 W. Grizolli et al., SPIE Proc., 1038502, 2017 * S. Marathe et al., Adaptive X-Ray Optics III, SPIE Proc., 92080D, 2014
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH27
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH41	Frontend Slits for Closely-Spaced Wiggler Beams	wiggler, vacuum, operation, scattering	424
	S.K. Sharma, C. Amundsen, F.A. DePaola, J.L. Tuozzolo BNL, Upton, Long Island, New York, USA
	A high energy x-ray (HEX) beamline facility will be constructed at NSLS-II for R&D in energy storage tech-nologies using different x-ray imaging techniques. A 4.3 Tesla superconducting wiggler will be used to produced x-rays of total power of approximately 56 kW in 8 keV ' 200 keV range. The nominal horizontal fan of ~ 10 mrad will be split into three closely spaced beams of 0.2 mrad, 1.0 mrad and 0.2 mrad fans. Each beam is required to have a frontend slit with four distinct apertures. The conventional L-shape design of the slit is not feasible for these closely spaced beams because of constraints on side cooling and horizontal travel of the slits. In this paper we propose two solutions for these slits using a beam pass-through design, vertical-only travel and optimized cooling configurations.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH41
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FROAMA02	A High Heat Load Double Crystal Monochromator and Its Cryo Cooling System for Heps	ISOL, vacuum, optics, synchrotron	430
	H. Liang, L. Gao, Y.C. Jiang, W.F. Sheng, S. Tang, A.Y. Zhou IHEP, Beijing, People's Republic of China G. Cao University of Chinese Academy of Sciences, Beijing, People's Republic of China
	A high heat load double crystal monochromator and its cryo cooling system were designed and their prototypes were fabricated for the future HEPS. The mechanical and cooling structure of the DCM are introduced. The FEA results show the DCM is capable of cooling 870 watts of heat load. The cryo cooling system is also introduced. Test results show the pressure stability of the cryo cooling system is less than 2 mbar RMS. Offline heat load test of the DCM were carried out by a ceramic heater attached to the center of the incident surface of the first crystal, and 834 watts heat load were applied by the heater without boiling the liquid nitrogen. Offline absolute vibration measurement of the second crystal assembly was carried out by a laser interferometer under different cryo pump speed, pressure and heat load conditions, to find out the stability performance accordingly. An absolute vibration of 41 nrad RMS was measured, with the pump running at 45Hz, which has a cooling capability of 400 watts.
	Slides FROAMA02 [7.370 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-FROAMA02
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FROAMA07	ESRF Double Crystal Monochromator Prototype Project	SRF, vacuum, radiation, GUI	440
	R. Baker, D. Baboulin, R. Barrett, P. Bernard, G. Berruyer, J. Bonnefoy, M. Brendike, P.M. Brumund, Y. Dabin, L. Ducotté, H. Gonzalez, G. Malandrino, P. Marion, O. Mathon, T. Roth, R. Tucoulou ESRF, Grenoble, France
	Spectroscopy beamlines at the ESRF are equipped with a generic model of double crystal monochromator, originally acquired in the 1990's. After over 15 years of continuous service, their conception, although pioneering 20 years ago, can no longer meet the challenge of present and future scientific goals in terms of position and angular stability, thermal stability, cooling system, vibration, control and feedback, particularly in view of the ESRF - EBS upgrade. Considering the above issues, a feasibility phase was launched to develop a prototype DCM dedicated to future spectroscopy applications at the ESRF. Specifications : derived from expected performance of the EBS upgrade and scientific objectives - are extremely challenging, especially in terms of mechanical and thermal stability and impose the adoption of several innovative design strategies. The prototype is currently in the assembly phase and tests of the complete system are planned before the end of 2018. An overview of the DCM prototype project will be given, including specifications, major design options implemented and various validated concepts. Current project status and first test results will also be presented.
	Slides FROAMA07 [24.528 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-FROAMA07
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

TUPH10

Interfaces with Operational Systems APS Upgrade Project Removal and Installation

vacuum, interface, storage-ring, monitoring

43

R.W. Connatser
ANL, Argonne, Illinois, USA

Funding: Created by UChicago Argonne, LLC, Operator of Argonne National Laboratory. Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357.
A critical time for the APS Upgrade Project is the twelve month dark period in which the current accelerator, front ends, and insertion devices will be removed and the new MBA will be installed. In addition to the technical interfaces, there are a significant number of operational support systems and utilities that will be affected. For the dark period to be a success, these additional interfaces need to be described and their interaction with the removal and installation processes defined. This poster describes many of these additional systems and their interfaces.

Poster TUPH10 [0.354 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH10

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPH27

Structure Design of a Multi-Wire Target

vacuum, target, alignment, neutron

92

X.J. Nie, H.Y. He, L. Kang, L. Liu, G.Y. Wang, T.G. Xu, D.H. Zhu
IHEP, Beijing, People's Republic of China
J.X. Chen, C.J. Ning, J.L. Sun, A.X. Wang, J.B. Yu, Y.J. Yu, J.S. Zhang
CSNS, Guangdong Province, People's Republic of China

Introduce a structure design of a Multi-Wire Target. The plan of wire alignment was decided by analysis. The wire tightening device with interlaced alignment was used to solve the wire alignment in narrow space. The vacuum chamber was designed by optimization. The displacement pickup was used to make the movement control of translation stages.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH27

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPH33

Vibration Measurement & Simulation of Magnet & Girder in SESAME

experiment, software, quadrupole, dipole

111

M.M. Al Shehab
SESAME, Amman, Jordan

Funding: IAEA
SESAME (Synchrotron-light for Experimental Science and Applications in the Middle East) started operation in January 2017. During the design phase several FEA studies were performed to optimize the girder and the magnet design taking into account all the constraints such as the tight spacing between magnets, the vacuum chamber installation interactions with the magnets. In this paper the experimental and Numerical modal analysis are presented as well as the result comparison between the experimental and simulation work.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH33

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPH43

The LNLS Metrology Building - Environmental Control Results

instrumentation, optics, synchrotron, operation

143

H.G.P. de Oliveira, C.S.N.C. Bueno, L. Sanfelici, M.B. da Silva
LNLS, Campinas, Brazil

Funding: Ministry of Science, Technology, Innovation and Communication (MCTIC)
Modern synchrotron light sources require high mechanical stability throughout its facilities, frequently demanding characterization processes in theμand nanometer scales. In this context, the Brazilian Synchrotron Light Laboratory (LNLS) built a new facility with several controlled environment rooms to minimize disturbances during optical and mechanical metrology procedures and to support advanced instrumentation development for the new Sirius' beamlines. The building design imposed very strict requirements regarding temperature, humidity and particles. This work presents the environmental control validation results and the floor vibration assessment enlightening the influence of the building machinery. Temperature variations below ± 0,1 °C were successfully achieved for all rooms, relative humidity is also better than 50 ± 5 % and the floor RMS displacement did not exceed 15 nm. The building is fully operational since early 2017 and currently hosting several tests on monochromators, mirrors, front-ends and many other systems for the Sirius beamlines.
Metrology, environmental control, vibration assessment

Poster TUPH43 [2.557 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH43

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEOAMA01

The Status of the New High-Dynamic DCM for Sirius

operation, vacuum, synchrotron, experiment

147

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

Funding: Ministry of Science, Technology, Innovation and Communication (MCTIC)
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 genera-tion machines, with their small emittances, start to bring higher stability performance requirements, in spite of factors as high power loads and variations, high radiation levels, ultra-high vacuum compatibility and vibration sources. In response to that, an innova-tive concept of a high-dynamic vertical DCM (Double Crystal Monochromator) with angular range between 3 and 60 degrees (equivalent to 2.3 to 38 keV with Si(111)) has been developed at the Brazilian Synchro-tron Light Laboratory. A highly repeatable dynamic system, with servo control bandwidth of 250 Hz, has been achieved and will be installed at Sirius macromo-lecular crystallography beamline ' MANACA ' still in 2018. The complete offline results of the in-vacuum cryocooled high-dynamic DCM, showing stability between crystals around 15 nrad RMS up to 2.5 kHz, even during the Bragg angle motion for flyscans, are presented.

Slides WEOAMA01 [7.575 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEOAMA01

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEOAMA02

Sample Stabilization for Tomography Experiments in Presence of Large Plant Uncertainty

experiment, SRF, feedback, simulation

153

T. Dehaeze, C.G.R.L. Collette
PML, Liège, Belgium
C.G.R.L. Collette
ULB - FSA - SMN, Bruxelles, Belgium
T. Dehaeze, M. Magnin-Mattenet
ESRF, Grenoble, France

A new low emittance lattice storage ring is under construction at the ESRF. In this new instrument, an upgraded end station for ID31 beamline must allow to position the samples along complex trajectories with a nanometer precision. In order to reach these requirements, samples have to be mounted on high precision stages, combining a capability of large stroke, spin motion, and active rejection of disturbances. First, the end station will be presented with the associated requirements. However, the precision is limited by thermal expansion and various imperfections that are not actively compensated. Our approach is to add a Nano Active Stabilization System (NASS) which is composed of a 6DoF Stewart platform and a 6 DoF metrology system. A 3D model of the end station updated with experimental data is developed. As the mass of the samples may vary by up to two orders of magnitudes, robust control strategies are required to address such plant uncertainty. The proposed control strategy are presented and applied on the developed model by conducting time domain simulations of tomography experiment in presence of instrumentation noise and system uncertainty.

Slides WEOAMA02 [1.721 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEOAMA02

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEOPMA05

Application of Industry Recognised Development Tools and Methodologies, such as Six Sigma to Facilitate the Efficient Delivery of Innovative and Robust Engineering Solutions at Synchrotron Facilities

synchrotron, hardware, experiment, factory

184

S. A. Macdonell
DLS, Oxfordshire, United Kingdom

Synchrotron facilities play a key part in the delivery of world leading science to facilitate research and development across multiple fields. The enabling technology designed by engineers at these facilities is crucial to their success. The highly academic nature of Synchrotron facilities does not always lead to working in the same way as a commercial engineering company. However, are the engineering requirements at Synchrotrons different to commercial companies? Exploring the parallels between research and commercial companies, can we show that the tools and methodologies employed could benefit engineering development at Synchrotrons? This paper provides a theoretical discussion on the commonality between engineering developments at Synchrotron facilities compared to commercial companies. How methodologies such as Design for Six Sigma and in particular tools such as stakeholder analysis, functional tree analysis, FMEA and DoE could be utilised in the design process at Synchrotrons. It also seeks to demonstrate how implementation could aid the development of innovative, robust and efficient design of engineering solutions to meet the ever-increasing demands of our facilities.

Slides WEOPMA05 [1.633 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEOPMA05

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPH06

Upgrade of Magnetic Measurements Laboratory at ALBA Synchrotron

hardware, software, TANGO, MMI

211

J. Campmany, F. Becheri, J. Marcos, V. Massana, R. Petrocelli, L. Ribó
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

Along 2017 and 2018, a complete upgrade of ALBA magnetic measurements lab has been done. Upgrade has affected both hardware and software. Regarding hardware, a relevant innovation has been the replacement of DC motors by step motors in new Hall probe bench and in flipping and rotating coil benches. Up to now, this kind of continuous measurements usually were done using DC motors because step motors were considered unable to fulfil the required smoothness of the movement. However, current step motors state of the art made them compatible with DC. In our case, we have tested the performance of upgraded benches and they reach the same accuracy, or even better. Regarding software, we have unified all motion drivers to ICEPAP and all control system to Tango package, taking advantage of the last ICEPAP firmware. That includes the feature of triggering data acquisition system by signals generated from different axis that can be selected by software.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH06

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPH08

Application of Remote Installation and Measurement Smart Vehicle in Accelerator

alignment, monitoring, radiation, operation

217

J.X. Chen, H.Y. He, C.J. Ning, A.X. Wang, Y.J. Yu, J.S. Zhang, D.H. Zhu
CSNS, Guangdong Province, People's Republic of China
L. Kang, L. Liu, X.J. Nie, G.Y. Wang, J.B. Yu
IHEP, Beijing, People's Republic of China

Funding: National Natural Science Foundation of China, No.11375217
The installation, alignment measurement and vibration monitoring of the accelerator equipment are cumbersome. In order to reduce the work intensity and exposure time of personnel, this paper has developed a smart vehicle that can automatically walk and automatically adjust the horizontal in the accelerator or beam line area. The smart vehicle can move forwards, sideways, oblique lines, rotations and combinations, and can automatically adjust the level according to different terrains. The auto-leveling accuracy is better than 0.001 degrees. By installing vibration measuring equipment or collimating equipment on the vehicle platform, vibration testing and collimation measurement of the equipment in the accelerator or beamline device can be performed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH08

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPH17

Adjusting Mechanism of Inter-Undulator Section for PAL XFEL

undulator, cavity, FEL, quadrupole

241

H.-G. Lee, J.H. Han, S.-H. Jeong, Y.G. Jung, H.-S. Kang, D.E. Kim, H.-S. Lee, S.B. Lee, B.G. Oh, K.-H. Park, H.S. Suh
PAL, Pohang, Kyungbuk, Republic of Korea

Pohang Accelerator Laboratory (PAL) has developed a SASE X-ray Free Electron Laser based on 10 GeV linear accelerator. The inter-Undulator (IU) support section was developed to be used in the intersections of the Undulator Systems. The IU supports consist of phase shifter, quadrupole magnet with mover, beam loss monitor, cavity BPM with mover, two corrector magnets and vacuum components. The adjusting mechanism of IU Support has manual alignment system to be easily adjusting the component. The mover of quadruple magnet and cavity BPM with submicron repeatability has auto-adjusting systems with stepping motor. The mover main specifications include compact dimensions and a ±1.5 mm stroke in the vertical and horizontal direction. Linear motion guide based on 5-phase stepping motors have been chosen. This paper describes the design of the stages used for precise movement and results of mechanical measurements including reproducibility will be reported.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH17

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPH30

Energy Efficient Air-Conditioning System Design

ECR, photon, linac, operation

270

Z.-D. Tsai, W.S. Chan, C.S. Chen, Y.Y. Cheng, Y.-C. Chung, C.Y. Liu
NSRRC, Hsinchu, Taiwan

At the Taiwan Light Source (TLS) and Taiwan Photon Source (TPS), several studies related to energy savings in air-conditioning systems are underway, where heat recovery has been considered for laboratory applications. The performance of a run-around coil has demonstrated that heat recovery plays an important role in energy conservation. Based on this design of an air handling unit (AHU), we enhance this model by combining it with enthalpy control for seasonal changes. Here, we construct a new AHU to verify the practical impact of energy usage. The improvements show that both mechanisms can be achieved simultaneously.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH30

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPH34

Research on Active Vibration Isolation System

ISOL, quadrupole, damping, ground-motion

280

J.B. Yu, L. Kang
IHEP, Beijing, People's Republic of China
J.X. Chen, H.Y. He, L. Liu, X.J. Nie, C.J. Ning, A.X. Wang, G.Y. Wang, Y.J. Yu, J.S. Zhang, D.H. Zhu
CSNS, Guangdong Province, People's Republic of China

Funding: work supported by Natural Science Foundation of China(11375217)
Based on the increase of accuracy requirements coming from increasing instrument precision, advanced isolation components are required, and active vibration control method is proposed. This paper mainly shows the experimental system, and some work has been done at present. Now that we are still at the beginning research of active vibration isolation, we hope it will be steadily used in the support systems of some precision equipment and instruments.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH34

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THOPMA01

Piezo Technology in Synchrotron

synchrotron, laser, resonance, vacuum

321

B. Laluc, T. Maillard, A. Riquer
CTEC, MEYLAN, France

Synchrotrons need robust products. That is why the association of piezo actuator technology and CEDRAT TECHNOLOGIES (CTEC) know-how has been successful for synchrotron mechanisms projects. The technological brick is the "Amplified Piezo Actuator" (APA®) tested and widely used in space applications, it is often implemented in CTEC piezo mechanisms and provides a high level of robustness. Modifying the layout and the number of APA® allows several needs to be addressed within beamlines. Three applications developed in collaboration with the EMBL, PAL and SOLEIL will be presented in this paper. The first application consists of cutting a beam with a piezo shutter. The maximum beam diameter is 3 mm. The second mechanism allows the energy of a beam to be modified by using a series of piezo actuated filters. And the last mechanism aims at modifying the beam section shape with an active piezo micro-slits mechanism.
"Synchrotron SOLEIL"
"EMBL ESRF Grenoble"
"www.cedrat-technologies.com"

Slides THOPMA01 [11.933 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THOPMA01

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH02

LCLS Pulse Selector, A Multifunction Shutter for the LCLS-I 120 Hz FEL

timing, operation, FEL, MMI

336

R. Armenta, E.A. Paiser
SLAC, Menlo Park, California, USA

The LCLS Pulse Selector was designed to pick specific pulses and reduce the repetition rate of the 120Hz LCLS pulse train in support of widely diverse, user defined experiments. It utilizes two rotating parallel plates to alternately transmit and block pulses in a single sweeping motion. A conventional stepper motor connected to the plates provides the rotation. The key to the system is its sophisticated timing scheme. Each sweep of the shutter is synchronized (with a precise delay) with the event codes normally generated with each pulse for data acquisition use. This shutter system has the capability of reducing the repetition rate of the LCLS x-ray to any frequency less than or equal to 60Hz in order to select a single pulse of LCLS x-ray beam at 120Hz. Since its installation, the pulse selector has been used in multiple experiments with great success providing independent pulse selection to individual beamlines at the same time.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH02

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH03

The XBPM Project at MAX IV Frontends, Overview and First Results

storage-ring, shielding, photon, high-voltage

340

A. Bartalesi
MAX IV Laboratory, Lund University, Lund, Sweden

All the frontends installed on the 3GeV storage ring at MAX IV are equipped with two X-Ray Beam Position Monitors. Having recently finished the installation of the acquisition system, it was possible to record and analyse data. This presentation describes the setup and shows the first results.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH03

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH04

Fast X-Ray Beam Intensity Stabilization for Absorption Spectroscopy and Spectromicroscopic Imaging

focusing, vacuum, feedback, photon

343

M. Birri, D. Ferreira Sanchez, D. Grolimund, B. Meyer, V.A. Samson
PSI, Villigen PSI, Switzerland

The characteristics of synchrotron sources and beamline optics commonly result in systematic and random variations of the delivered photon flux. In X-ray absorption based measurements, for example, monochromator glitches [1] or the energy dependent gap size of small gap in-vacuum undulators [2] are intrinsic sources for changes in the intensity of the incoming photon flux (I0), however many types of x-ray experiments would benefit from a constant I0. Monochromator Stabilization (MOSTAB) is a common solution for most synchrotron beamlines with double crystal monochromators. This approach is based on the relative alignment of the two monochromator crystals (dynamic detuning) to stabilize beam intensity or position. Obviously, any change in angular alignment of the monochromator crystals will also induce deviations in the beam trajectory and photon energy distribution. At the microXAS undulator beamline of the SLS, we have implemented a system to achieve a constant I0. Two wedge-shaped absorbers produce a spatially uniform attenuation preserving the beam shape without introducing changes in its trajectory. Hardware, control loop and system performance will be presented.
[1] F.Bridges, Nuclear Instruments and Methods in Physics Research A257 (1987) 447-450.
[2] H.Kitamura, J.Synchrotron Rad. 7 (2000), 121-130.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH04

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH15

A New High Precision, Fully Motorized 6-DoF Sample Stage for the ALBA PEEM Endstation

GUI, resonance, vacuum, feedback

368

N. Gonzalez, L. Aballe, A. Carballedo, C. Colldelram, M. Foerster
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

A new 6-DOF sample manipulator has been designed for the ALBA Synchrotron PhotoEmission Electron Microscopy (PEEM) experimental station, based on a commercial Elmitec LEEM 3. The new design includes full motorization of all 6 axes with position feedback, no backlash, and maximized stability, crucial to achieve the best spatial resolution of down to 8 nm (in so-called LEEM mode). The in-plane longitudinal and transversal motions with sub-micron resolution are based on high precision linear guides, while the pitch and roll stages (sample tilt), guided by angular guides, are actuated by a double-flexure system, which enhances the overall rigidity of the system. The vertical stage is composed by a high rigidity recirculating roller screw and cross roller guides. Finally, 360° yaw rotation is supplied by a differentially pumped commercial rotary stage. On top of the stage, the sample support is mounted on a customized DN63CF flange. This support keeps the original functionalities of the sample manipulator and holders, with 6 independent electrical contacts, and the possibility to heat the sample up to 2000 K and cool it to 100 K with an improved liquid nitrogen cooling system.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH15

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH16

Compact Mirror Bender With Sub-Nanometer Adaptive Correction Control

optics, synchrotron, focusing, feedback

371

N. Gonzalez, C. Colldelram, J.B. González Fernández, J. Juanhuix, J. Nicolás, C. Ruget
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

Funding: This work is partially funded by MINECO under contract FIS2015-66328-C3-2-R and by ERDF funds.
We present a compact mirror bender with dynamic surface correction. The system is the evolution of an in-house development and will be the default focusing system for the new ALBA beamlines. The bender is now more compact and can introduce stronger curvatures, as required for microfocus applications. It allows for in-situ correction of the mirror surface, with resolution and stability below one nanometer. The bender can compensate parasitic deformations caused by thermal bumps, changes of focus, or stresses appeared during installation or bakeout. The system includes two torque actuators at the ends of the mirror as well as a number of correctors along the mirror length, capable of introducing high order surface corrections. The bending curvature is actively stabilized, by a feedback loop that controls the applied force, to the equivalent of 0.25 nm rms in a 500 mm long mirror. The figure correctors provide up to 20N push-pull force with resolution below .001 N. They combine elastic and magnetic forces to improve their stability.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH16

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH17

NCD-SWEET Beamline Upgrade

detector, optics, experiment, electronics

374

J.B. González Fernández, C. Colldelram, S. Ferrer, A. Fontserè Recuenco, A.A. Gevorgyan, N. Gonzalez, G. Jover-Mañas, C. Kamma-Lorger, M.L. Llonch, M. Malfois, J.C. Martínez Guil, Y. Nikitin, G. Peña, L. Ribó, I. Sics, E. Solano, J. Villanueva
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

The SAXS/WAXS Experimental End sTation (NCD-SWEET) at ALBA Synchrotron has undergone major improvements in three main areas, beam performance, SAXS detector data quality and beamline operability, in order to perform state-of-the-art SAXS/WAXS experi-ments. A new channel-cut monochromator system has improved the beam quality and stability, with current vibration amplitudes under 1% of the beam size. Two sets of refractive beryllium lenses have been installed for focussing the beam. One of the sets allows to microfocus the beam size. Besides this, the former SAXS CCD detector has been replaced by a single-photon counting pixel detector, a Piltatus3 S 1M. In the end station, a full re-design of the mechanical elements with sub-micron resolution movements together with the installation of new equipment has been completed, resulting in an improved beamline configuration, and a faster and safer rearrangement of the flight tube length. New upgraded configuration also allows for GISAXS experiments. Finally, other auxiliary improvements have been done in areas like radiation protection, air conditioning, health and safety, cable management, electronics and control.

Poster THPH17 [5.848 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH17

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH19

Engineering Design of the XPD & PDF Beamline Sample Environment for Safe Experimental Use of Hazardous Gases

experiment, FEL, operation, GUI

379

E. Haas, M. Abeykoon, S. Buda, E.D. Dooryhee, S. Ghose, C. Stelmach, J.T. Trunk
BNL, Upton, Long Island, New York, USA

Funding: U.S. Department of Energy
The X-ray Powder Diffraction (XPD) and Pair Distribution Function (PDF) beamlines located at the 28-ID beam port at NSLS-II require a means for safely supplying, containing, and exhausting hazardous gases to and from experimental samples. These beamlines plan to use a wide range of flammable, toxic, and reactive gases for in-situ studies of catalytic and chemical reactions. Since many of the gases are hazardous, a low-cost, robust means is needed to safely supply gases to samples, position the samples quickly, accurately, and remotely, collect scattered X-rays over a wide-angle without distortion, and exhaust the gases safely. Ideally, the sample environment should also allow rapid sample set-up and change-out. The PDF/XPD system includes a sample holder, internal beam stop, sample chamber, and stages that provide eight degrees of freedom. A specially-designed window is also included for maximum X-ray transmission at minimum cost. Sensors, flow metering devices, and circuitry are included to provide proper purging, control hazardous and dilution gas flows, and integrate all of the safeguards needed to assure safe operation.
Note to MEDSI reviewers:
"Contributed Oral" presentation is indicated above, however a poster presentation can be generated by contacting the author via email at haas@bnl.gov if this is preferred.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH19

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH23

Interlock System for a Magnetic-Bearing Pulse Selector

PLC, GUI, software, operation

385

H. Ishii, J. Adachi, T. Kosuge, H. Tanaka
KEK, Ibaraki, Japan

A hybrid operation mode that enables beam time sharing between single-bunch users and multi-bunch users has been introduced in the PF 2.5GeV ring of KEK (High Energy Accelerator Research Organization). A pulse selector, a kind of optical chopper, is used to permit the passage only of an X-ray pulse that comes from a single bunch part of the hybrid filling pattern. We have developed a new pulse selector with a magnetic bearing. It comprises a rotating dish-shaped disk, a phase-lock-loop (PLL) controlled motor system, and other parts . The speed and phase of the rotating disk is controlled by TTL signals obtained by dividing the RF signal of the PF 2.5 GeV ring. A commercially available motor driver was designed for lower loading. The rotating disk for the pulse selector is heavier than those disks used previously in which air bearings are used. A rapid deceleration of the rotation causes problems through a large current flow back to the motor driver. In this study, we describe the prototype of a programmable logic controller based on an interlock system to avoid the current flow back problem in the pulse selector.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH23

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH27

Mechanical Design of a Compact Non-invasive Wavefront Sensor for Hard X-rays

optics, monitoring, alignment, photon

394

S.P. Kearney, L. Assoufid, W.C. Grizolli, T. Kolodziej, K. Lang, A. Macrander, X. Shi, D. Shu, Yu. Shvyd'ko, W. Wojcik
ANL, Argonne, Illinois, USA

Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DEAC02-06CH11357.
Abstract This work describes mechanical design of a prototype compact wavefront sensor for in situ measurement and monitoring of beam wavefront of hard x-ray beamlines [1]. The system is based on a single-shot grating interferometer [2, 3] and a thin diamond single-crystal beam splitter. The beam splitter is designed to be inserted in the incident and oriented to diffract a fraction of the incident beam bandwidth into the interferometer, for wavefront measurement and reconstruction. The concept is intended to study the feasibility of a non-invasive wavefront sensor for real time wavefront monitoring and diagnostics, with possible application in adaptive mirrors for wavefront preservation and control [1, 4]. The design focus was on compactness to enable easy portability and implementation in a beamline.
* L. Assoufid et al., Rev. Sci. Instrum., 87(5), 052004, 2016
** W. Grizolli et al., SPIE Proc., 1038502, 2017
*** S. Marathe et al., Adaptive X-Ray Optics III, SPIE Proc., 92080D, 2014

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH27

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPH41

Frontend Slits for Closely-Spaced Wiggler Beams

wiggler, vacuum, operation, scattering

424

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

A high energy x-ray (HEX) beamline facility will be constructed at NSLS-II for R&D in energy storage tech-nologies using different x-ray imaging techniques. A 4.3 Tesla superconducting wiggler will be used to produced x-rays of total power of approximately 56 kW in 8 keV ' 200 keV range. The nominal horizontal fan of ~ 10 mrad will be split into three closely spaced beams of 0.2 mrad, 1.0 mrad and 0.2 mrad fans. Each beam is required to have a frontend slit with four distinct apertures. The conventional L-shape design of the slit is not feasible for these closely spaced beams because of constraints on side cooling and horizontal travel of the slits. In this paper we propose two solutions for these slits using a beam pass-through design, vertical-only travel and optimized cooling configurations.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH41

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FROAMA02

A High Heat Load Double Crystal Monochromator and Its Cryo Cooling System for Heps

ISOL, vacuum, optics, synchrotron

430

H. Liang, L. Gao, Y.C. Jiang, W.F. Sheng, S. Tang, A.Y. Zhou
IHEP, Beijing, People's Republic of China
G. Cao
University of Chinese Academy of Sciences, Beijing, People's Republic of China

A high heat load double crystal monochromator and its cryo cooling system were designed and their prototypes were fabricated for the future HEPS. The mechanical and cooling structure of the DCM are introduced. The FEA results show the DCM is capable of cooling 870 watts of heat load. The cryo cooling system is also introduced. Test results show the pressure stability of the cryo cooling system is less than 2 mbar RMS. Offline heat load test of the DCM were carried out by a ceramic heater attached to the center of the incident surface of the first crystal, and 834 watts heat load were applied by the heater without boiling the liquid nitrogen. Offline absolute vibration measurement of the second crystal assembly was carried out by a laser interferometer under different cryo pump speed, pressure and heat load conditions, to find out the stability performance accordingly. An absolute vibration of 41 nrad RMS was measured, with the pump running at 45Hz, which has a cooling capability of 400 watts.

Slides FROAMA02 [7.370 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-FROAMA02

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FROAMA07

ESRF Double Crystal Monochromator Prototype Project

SRF, vacuum, radiation, GUI

440

R. Baker, D. Baboulin, R. Barrett, P. Bernard, G. Berruyer, J. Bonnefoy, M. Brendike, P.M. Brumund, Y. Dabin, L. Ducotté, H. Gonzalez, G. Malandrino, P. Marion, O. Mathon, T. Roth, R. Tucoulou
ESRF, Grenoble, France

Spectroscopy beamlines at the ESRF are equipped with a generic model of double crystal monochromator, originally acquired in the 1990's. After over 15 years of continuous service, their conception, although pioneering 20 years ago, can no longer meet the challenge of present and future scientific goals in terms of position and angular stability, thermal stability, cooling system, vibration, control and feedback, particularly in view of the ESRF - EBS upgrade. Considering the above issues, a feasibility phase was launched to develop a prototype DCM dedicated to future spectroscopy applications at the ESRF. Specifications : derived from expected performance of the EBS upgrade and scientific objectives - are extremely challenging, especially in terms of mechanical and thermal stability and impose the adoption of several innovative design strategies. The prototype is currently in the assembly phase and tests of the complete system are planned before the end of 2018. An overview of the DCM prototype project will be given, including specifications, major design options implemented and various validated concepts. Current project status and first test results will also be presented.

Slides FROAMA07 [24.528 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-FROAMA07

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)