MEDSI2016 - Classification: Facility Design and Updates / Facility Design and Updates

Paper	Title	Page
MOPE26	Front End Photon Shutter Water Leak to Vacuum at the Canadian Light Source	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	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	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	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	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	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	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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MOPE33	The Cooling Structure for the Cryogenic Permanent Magnet Undulator Prototype at SSRF
	Y. Liu, Y.Z. He, X. Hu, H.F. Wang, J. Wang, L. Wang, S.H. Wang, L. Yin, W. Zhang, Q.G. Zhou SINAP, Shanghai, People’s Republic of China L. Zhang SSRF, Shanghai, People’s Republic of China
	A cryogenic permanent magnet undulator (CPMU) prototype, based on the in-vacuum undulator technology, is under development at Shanghai Synchrotron Radiation Facility (SSRF). The prototype has a magnetic period length of 20 mm and effective peak field 1.04 T (gap 6 mm) at cryogenic temperature. The hybrid type magnetic assembly consists of NdFeB permanent magnet blocks and iron poles. A liquid nitrogen closed loop is adopted for cooling the magnet blocks to about 140 K. The cooling system is well designed to achieve a uniform temperature along the assembly and the temperature gradient is less than 1.5 K per meter. This paper presents the details of the cooling structure design for magnet blocks and iron poles, the mechanical structure of the copper-nickel foil with spring loaded tension mechanism and end tapers, as well as the test results off-line and on-line.
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MOPE34	Preliminary Design of the Magnet Support and Alignment Systems for the Aps-U Storage Ring	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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MOPE35	A New Generation of UHV Instruments for X-Ray Spectrometry at the SR Facilities BESSY II, ELETTRA and SOLEIL and the BLiX Laboratory
	J. Lubeck, B. Beckhoff, J. Weser PTB, Berlin, Germany D. Grötzsch, B. Kanngießer Technische Universität Berlin, Berlin, Germany
	A versatile UHV instrument was developed and commissioned by GermanyÂs national metrology institute PTB for SR based X-Ray Reflectometry (XRR) and Spectrometry (XRS) nanoanalytical techniques at BESSY II. A 9-axis manipulator allows for a sample alignment in all degrees of freedom and provides a rotational and translational movement of photodiodes as well as a translational movement of a beam-geometry defining aperture system. Traceable reference-free, total-reflection and grazing-incidence X-Ray Fluorescence (XRF) analyses were enabled with options for XRR and polarization-dependent X-ray absorption fine structure analyses on up to 100 mm samples aiming at compositional information, species and elemental depth profiles. Three technology transfer projects of adapted instruments enhanced XRS research activities within Europe at the SR facilities ELETTRA (IAEA)* and SOLEIL (CEA/LNE-LNHB) as well as at the X-ray innovation laboratory BLiX (TU Berlin)* where different sources are used*. The expertise gained here lead to a next generation development enabling a very flexible use at four different SR beamlines for XRS and hard X-ray emission spectroscopy of up to 150 mm samples. J.Lubeck et al, Rev. Sci.Instr. 84, 045106(2013) A.Karydas et al, IAEA/XRF/NL 24, 1(2013) M.Spanier et al, Rev. Sci.Instr. 87, 035108(2016) ***J.Lubeck et al, AIP Conf. Proc. 1741, 030011(2016)
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MOPE36	Construction of Hard X-Ray Beamlines at Synchrotron Light Research Institute
	S. Srichan, D. Bumrungkoh, S. Chaichuay, M. Phanak, S. Pongampai SLRI, Nakhon Ratchasima, Thailand
	A high field multipole wiggler (MPW) 2.4 T was installed at the 1.2 GeV storage ring of the Synchrotron Light Research Institute (SLRI) to meet the increasing user demands for hard X-ray synchrotron radiation in Thailand. The wiggler radiation fan of horizontal 15.93 mrad has been split in to three branches to be equipped with three beamlines for BL1.1W: multiple X-ray techniques, BL1.2W: X-ray imaging & X-ray Tomographic microscopy and BL1.3W: small/wide angle X-ray scattering. These three beamlines were successfully installed during machine shutdown in summer 2015 and will be fully operated in the end of 2016. The construction works for three branches beamlines that are mechanical engineering design, fabrication and installation of beamline components will be presented.
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MOPE37	Diamond Multi-Bend Achromats for Low Emittance and New Insertion Devices	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	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	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	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	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	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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TUCA06	The Girders System for the New ESRF Storage Ring	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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TUCA07	An Overview of the European Spallation Source
	X. Permanyer ESS, Lund, Sweden
	ESS, the European Spallation Source, will be a major user facility at which researchers from academia and industry will investigate scientific questions using neutron beams. ESS will be a slow neutron source of unparalleled power and scientific performance. The ESS is divided in three main areas: accelerator, target and experiments. The accelerator creates protons at the ion source, accelerates them to an appropriate energy and steers them to a solid, rotating tungsten target. The target converts the high energy proton beam into low-energy neutron beams via the spallation process with the greatest possible efficiency. The neutrons will be delivered to a suite of research instruments, each devised to extract different kinds of information from the samples studied. ESS will reach its full design specifications in 2025, with a suite of 22 research instruments.
	Slides TUCA07 [48.115 MB]
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WEAA01	The ESRF Accelerator Upgrade: Overview, Technical Challenges and Solutions in the Engineering Design
	P. Marion, J.C. Biasci, Y. Dabin, L. Goirand ESRF, Grenoble, France
	An engineering overview of the ESRF Extremely Brilliant Source (EBS) project will be presented. The ESRF EBS consists of replacing the current double-bend achromat storage ring by a new ring based on a 7-bend achromat lattice. This will enable a reduction of the electron beam horizontal emittance by a factor of 30 (140pm horizontal emittance) and an increase of the brilliance and coherence of the photon beam. As a consequence, the storage ring stability (vibrational and thermal) is of major importance, which implies specific design issues. The engineering design of standard cell components is now completed, some prototypes have been built and most of the large procurement contracts have been placed with the objective to pre-assemble equipped girders from mid 2017 and install them from beginning 2019. After introducing the context and the expected gain from the new storage ring, this talk will focus on the main technical challenges and present the mechanical design solutions adopted for the magnets and other strategic components . This presentation is given on behalf of the ESRF EBS engineering team. See also in MEDSI 2016 specific presentations on EBS Girders, X-Ray absorbers, Chambers & RF fingers, Injection zone, RF & straight sections, Thermal effects.
	Slides WEAA01 [7.541 MB]
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Paper

Title

Page

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

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

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

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

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

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

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

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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MOPE33

The Cooling Structure for the Cryogenic Permanent Magnet Undulator Prototype at SSRF

Y. Liu, Y.Z. He, X. Hu, H.F. Wang, J. Wang, L. Wang, S.H. Wang, L. Yin, W. Zhang, Q.G. Zhou
SINAP, Shanghai, People’s Republic of China
L. Zhang
SSRF, Shanghai, People’s Republic of China

A cryogenic permanent magnet undulator (CPMU) prototype, based on the in-vacuum undulator technology, is under development at Shanghai Synchrotron Radiation Facility (SSRF). The prototype has a magnetic period length of 20 mm and effective peak field 1.04 T (gap 6 mm) at cryogenic temperature. The hybrid type magnetic assembly consists of NdFeB permanent magnet blocks and iron poles. A liquid nitrogen closed loop is adopted for cooling the magnet blocks to about 140 K. The cooling system is well designed to achieve a uniform temperature along the assembly and the temperature gradient is less than 1.5 K per meter. This paper presents the details of the cooling structure design for magnet blocks and iron poles, the mechanical structure of the copper-nickel foil with spring loaded tension mechanism and end tapers, as well as the test results off-line and on-line.

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MOPE34

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

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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MOPE35

A New Generation of UHV Instruments for X-Ray Spectrometry at the SR Facilities BESSY II, ELETTRA and SOLEIL and the BLiX Laboratory

J. Lubeck, B. Beckhoff, J. Weser
PTB, Berlin, Germany
D. Grötzsch, B. Kanngießer
Technische Universität Berlin, Berlin, Germany

A versatile UHV instrument was developed and commissioned by GermanyÂs national metrology institute PTB for SR based X-Ray Reflectometry (XRR) and Spectrometry (XRS) nanoanalytical techniques at BESSY II*. A 9-axis manipulator allows for a sample alignment in all degrees of freedom and provides a rotational and translational movement of photodiodes as well as a translational movement of a beam-geometry defining aperture system. Traceable reference-free, total-reflection and grazing-incidence X-Ray Fluorescence (XRF) analyses were enabled with options for XRR and polarization-dependent X-ray absorption fine structure analyses on up to 100 mm samples aiming at compositional information, species and elemental depth profiles. Three technology transfer projects of adapted instruments enhanced XRS research activities within Europe at the SR facilities ELETTRA (IAEA)** and SOLEIL (CEA/LNE-LNHB) as well as at the X-ray innovation laboratory BLiX (TU Berlin)*** where different sources are used****. The expertise gained here lead to a next generation development enabling a very flexible use at four different SR beamlines for XRS and hard X-ray emission spectroscopy of up to 150 mm samples.
*J.Lubeck et al, Rev. Sci.Instr. 84, 045106(2013)
**A.Karydas et al, IAEA/XRF/NL 24, 1(2013)
***M.Spanier et al, Rev. Sci.Instr. 87, 035108(2016)
****J.Lubeck et al, AIP Conf. Proc. 1741, 030011(2016)

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MOPE36

Construction of Hard X-Ray Beamlines at Synchrotron Light Research Institute

S. Srichan, D. Bumrungkoh, S. Chaichuay, M. Phanak, S. Pongampai
SLRI, Nakhon Ratchasima, Thailand

A high field multipole wiggler (MPW) 2.4 T was installed at the 1.2 GeV storage ring of the Synchrotron Light Research Institute (SLRI) to meet the increasing user demands for hard X-ray synchrotron radiation in Thailand. The wiggler radiation fan of horizontal 15.93 mrad has been split in to three branches to be equipped with three beamlines for BL1.1W: multiple X-ray techniques, BL1.2W: X-ray imaging & X-ray Tomographic microscopy and BL1.3W: small/wide angle X-ray scattering. These three beamlines were successfully installed during machine shutdown in summer 2015 and will be fully operated in the end of 2016. The construction works for three branches beamlines that are mechanical engineering design, fabrication and installation of beamline components will be presented.

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MOPE37

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

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

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

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

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

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

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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TUCA06

The Girders System for the New ESRF Storage Ring

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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TUCA07

An Overview of the European Spallation Source

X. Permanyer
ESS, Lund, Sweden

ESS, the European Spallation Source, will be a major user facility at which researchers from academia and industry will investigate scientific questions using neutron beams. ESS will be a slow neutron source of unparalleled power and scientific performance. The ESS is divided in three main areas: accelerator, target and experiments. The accelerator creates protons at the ion source, accelerates them to an appropriate energy and steers them to a solid, rotating tungsten target. The target converts the high energy proton beam into low-energy neutron beams via the spallation process with the greatest possible efficiency. The neutrons will be delivered to a suite of research instruments, each devised to extract different kinds of information from the samples studied. ESS will reach its full design specifications in 2025, with a suite of 22 research instruments.

Slides TUCA07 [48.115 MB]

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WEAA01

The ESRF Accelerator Upgrade: Overview, Technical Challenges and Solutions in the Engineering Design

P. Marion, J.C. Biasci, Y. Dabin, L. Goirand
ESRF, Grenoble, France

An engineering overview of the ESRF Extremely Brilliant Source (EBS) project will be presented. The ESRF EBS consists of replacing the current double-bend achromat storage ring by a new ring based on a 7-bend achromat lattice. This will enable a reduction of the electron beam horizontal emittance by a factor of 30 (140pm horizontal emittance) and an increase of the brilliance and coherence of the photon beam. As a consequence, the storage ring stability (vibrational and thermal) is of major importance, which implies specific design issues. The engineering design of standard cell components is now completed, some prototypes have been built and most of the large procurement contracts have been placed with the objective to pre-assemble equipped girders from mid 2017 and install them from beginning 2019. After introducing the context and the expected gain from the new storage ring, this talk will focus on the main technical challenges and present the mechanical design solutions adopted for the magnets and other strategic components *. This presentation is given on behalf of the ESRF EBS engineering team.
* See also in MEDSI 2016 specific presentations on EBS Girders, X-Ray absorbers, Chambers & RF fingers, Injection zone, RF & straight sections, Thermal effects.

Slides WEAA01 [7.541 MB]

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