MEDSI2016 - List of Keywords (SRF)

Paper	Title	Other Keywords	Page
MOPE08	The LNLS Metrology Building	ion, controls, instrumentation, synchrotron	17
	H.G.P. de Oliveira, C. Esper Neto, P.T. Fonseca, R.R. Geraldes, B.C. Meyer, M.A. Pereira, G.L.M.P. Rodrigues, L. Sanfelici, L.G. da Silva LNLS, Campinas, Brazil L. Buccianti, M.H.A. Costa Biotec Controle Ambiental, São José dos Campos, SP, Brazil C. Prudente Prudente Engenharia Ltda., Uberlândia, Minas Gerais, Brazil
	Funding: Brazilian Ministry of Science, Technology, Innovation and Communication. The increasing demands of instrumentation projects for SIRIUS require more sensitive equipment to be devel-oped and characterized in theμand nanometer scale. To achieve this level of precision it is necessary to work within a controlled environment, minimizing instabilities and disturbance effects such as temperature variation and vibrations. Based on metrology labs as those at BESSY, ESRF, DLS and others, a new facility is currently under final construction stage at the LNLS, which will be dedi-cated to high precision optical and mechanical metrolo-gies. This work describes in detail the project of the new LNLS Metrology Building.
	Poster MOPE08 [2.829 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE08
About •	paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
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TUAA01	Precision Mechanical Design of a Miniature Dynamic Mirror Bender for the SSRF Beamline Upgrade Project	ion, controls, synchrotron-radiation, synchrotron	108
	D. Shu, J.W.J. Anton, S.P. Kearney ANL, Argonne, Illinois, USA J.W.J. Anton University of Illinois at Chicago, Chicago, USA A. Li, C. Mao, Y. Pan SINAP, Shanghai, People’s Republic of China
	Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357 and Argonne SPP project 85·10⁷⁷. Work at SINAP supported by NNSF of China No. U1332120. Dynamic mirror benders which enable high precision figuring of planar substrates for x-ray focusing are widely used as conventional optical equipment in various synchrotron radiation beamlines. Especially, in cases for x-ray focusing optics coated with multilayers in a Kirkpatrick-Baez configuration as the final focusing elements immediately upstream of the sample, the dynamic mirror benders provide high precision figuring to allow the mirror figure to be tuned to optimize the focusing at different incidence angles to cover a wide energy range . Recently, collaboration between Argonne National Laboratory and Shanghai Institute of Applied Physics (SINAP) has produced designs of a new miniature dynamic mirror bender with Argonne’s laminar nanopositioning flexure technique * for beamline upgrade project at the Shanghai Synchrotron Radiation Facility (SSRF). The mechanical design and finite element analyses of the miniature dynamic mirror bender, as well as its initial mechanical test results with laser interferometer are described in this paper. * R. Barrett, J. Härtwig, C. Morawe et al, Synchrotron Radiation News, 23, No.1, 36-42(2010) ** U.S. Patent granted No. 6,984, 335, D. Shu, T. S. Toellner, and E. E. Alp, 2006.
	Slides TUAA01 [7.411 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUAA01
About •	paper received ※ 10 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUCA06	The Girders System for the New ESRF Storage Ring	ion, alignment, storage-ring, resonance	147
	F. Cianciosi, T. Brochard, Y. Dabin, L. Goirand, M. Lesourd, P. Marion, L. Zhang ESRF, Grenoble, France
	The ESRF is proceeding with the design and procurement of its new low emittance storage ring (Extremely Brilliant Source project). This completely new storage ring requires a high performance support system, providing high stability (first resonance frequency about 50Hz) and a precise alignment capability (50µm, manual in transverse direction and motorized in the vertical one). In order to meet these requirements we decided to support the magnets of each of the 32 cells of the synchrotron with four identical girders that was considered the best compromise between cost, complexity and performances. Each of the resulting 128 girders is 5.1m long, carries about seven tons of magnets, and its weight including fixed basement and adjusting system is six tons. The adjustment system relies on modified commercial wedges; their stiffness was evaluated through laboratory tests. The FEA calculations carried out to optimize the design will be presented, together with the results obtained on a complete prototype girder system which was built and extensively tested and confirmed the modal calculations.
	Slides TUCA06 [17.229 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUCA06
About •	paper received ※ 07 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017
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TUPE02	Experimental Validated CFD Analysis on Helium Discharge	ion, simulation, experiment, cryogenics	156
	J.-C. Chang, Y.C. Chang, F.Z. Hsiao, S.P. Kao, H.C. Li, W.R. Liao, C.Y. Liu NSRRC, Hsinchu, Taiwan
	National Synchrotron Radiation Research Center in Taiwan (NSRRC) had set up three cryogenic systems to provide liquid helium to superconducting radio-frequency (SRF) cavities, insertion devices, and highly brilliant hard X-ray. The first one could produce liquid helium 134 LPH, with maximum cooling capacity of 469 W at 4.5 K. The second one could produce liquid helium 138 LPH, with maximum cooling capacity of 475 W at 4.5 K. The third one could produce liquid helium 239 LPH, with maximum cooling capacity of 890 W at 4.5 K. However, large liquid helium discharge in a closed space will cause personnel danger of lack of oxygen. We performed Computational Fluid Dynamic (CFD) simulation to analyse helium discharge through a SRF cavity in the Taiwan Light Source (TPS) tunnel. We simulated cases of helium discharge flow rates from 0.1 kg/s to 4.2 kg/s with and without fresh air supplied from the air conditioning system. We also set up both physical and numerical models within a space of 2.4m in length, 1.2m in width and 0.8m in height with nitrogen discharge inside to validate the CFD simulation.
	Poster TUPE02 [0.671 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE02
About •	paper received ※ 08 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPE16	Design of A Leaf Spring Bender for Double Laue Crystal Monochromator at SSRF	ion, synchrotron, focusing, optics	198
	H.L. Qin, K. Yang SSRF, Shanghai, People’s Republic of China L. Jin, H. Zhang, W. Zhu SINAP, Shanghai, People’s Republic of China
	A leaf spring bender geometry for water-cooled double Laue crystal monochromator (DLM) is presented. The DLM will be employed to acquire high energy mono-chromatic X-ray (60keV to 120keV) on the ultra-hard applications beamline at SSRF. A compact bending mechanism is designed in order to get horizontally fo-cused high energy monochromatic X-ray as small as 0.5mm. The bender applies a piece of thin asymmetric crystal and a pair of leaf springs which push the crystal to a sagittally bent radius as small as 1 meter by a pair of symmetry moments. An optimized crystal geometry is achieved by taking into account the meridional and sagit-tal bendings coupled and defined by the anisotropic elas-ticity of the asymmetric crystal. Furthermore, thermal slope error and structural stress of the bent crystal are analyzed by finite element method (FEA).
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE16
About •	paper received ※ 09 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPE36	Ground Vibration Monitoring for SXFEL Construction at SSRF	ion, experiment, FEL, site	242
	R.B. Deng, F. Gao, L. Yin SINAP, Shanghai, People’s Republic of China
	Funding: Project supported by the National Natural Science Foundation of China (Grant No. 11405255) Shanghai X-ray Free Electron Laser test facility (SXFEL) began construction on Dec.30 2014. It is quite important to monitor the ground vibration influenced by the construction at Shanghai Synchrotron Radiation Facility (SSRF), because the SXFEL is just in the north of SSRF and the nearest distance is only 20m. In this paper, the results of ground vibration measurement during the construction period at SSRF experimental hall, tunnel and experimental room near the SXFEL site are shown. Vibrations at different hours, frequency bands and directions are discussed to provide more detailed information on the influence of SXFEL construction to SSRF.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE36
About •	paper received ※ 08 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEAA02	X-Ray Absorber Design and Calculations for the EBS Storage Ring	ion, storage-ring, vacuum, scattering	257
	F. Thomas, J.C. Biasci, D. Coulon, Y. Dabin, T. Ducoing, F. Ewald, E. Gagliardini, P. Marion ESRF, Grenoble, France F. Thomas ILL, Grenoble, France
	The Extremely Brilliant Source (EBS) of the ESRF will hold new type of X-Ray absorbers: a new material will be used (CuCr1Zr suggested by ) together with a novel design integrating: - CF flange are machined in the absorber body. No weld, no braze. - Optimized toothed surface profile, reducing the induced thermal stresses. - Compton and Rayleigh scattering integrated blocking shapes. - Concentric cooling channels. A brief overview of the new design and concepts will be given. The presentation will then focus on thermo-mechanical absorber ANSYS calculations, combining both Computational Fluid Mechanics (CFD). The calculations and the calculation process will be discussed as well as the design criteria chosen by the team. The CFD calculations will show that an heat transfer coefficient between the water and the copper part can be estimated as well as the pressure drop through the absorber. Finally, the stress analysis will be emphasized. The type of stresses (tensile, compressive or shear) and their nature (primary or secondary) will be linked to the choice of design criteria. S. Sharma, "A Novel Design of High Power Masks and Slits", Proc. of MEDSI2014, Australia (2014).
	Slides WEAA02 [1.968 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEAA02
About •	paper received ※ 11 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEBA03	Recent Progress on the Design of High-Heat-Load Components	ion, photon, dipole, vacuum	277
	S.K. Sharma, C. Amundsen, F.A. DePaola, F.C. Lincoln, J.L. Tuozzolo BNL, Upton, Long Island, New York, USA
	A new design was recently proposed for the high power masks and slits of the front-ends at the 2014 MEDSI Conference. The main features of the new design are integrated knife edges in high conductivity copper alloys, interception of the photon beam only on horizontal surfaces, replacing Glidcop® with readily available CuCrZr, and thermal optimization with internal fins. Numerous components based on this design have been built for NSLS-II front-ends and some of the design features have been incorporated into other high-heat-load components such as beamline masks and crotch absorbers. In this paper we describe recent progress at NSLS-II in further advancing this design approach by FE analysis, fabrication and testing.
	Slides WEBA03 [4.523 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEBA03
About •	paper received ※ 09 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WECA05	Superconducting RF System Plans at CLS	ion, cavity, cryomodule, storage-ring	293
	C.N. Regier CLS, Saskatoon, Saskatchewan, Canada
	Canadian Light Source (CLS) in Saskatoon, Canada has several cryogenic systems. One of the most critical is a 4.4 K liquid helium system for a superconducting RF cavity. This system consists of a Linde TCF-50 liquid helium plant coupled to a Cornell-designed CESR-B 500 MHz cavity and cryomodule via a 52 metre multi-channel transfer line. Over the years CLS has evaluated failures on the system as well as risks for downtime, and has come up with plans for a major upgrade to the superconducting RF system to improve reliability. An overview of performance and issues to date is presented. Some of the specifics of the risk analysis and upgrade plan will be examined, and details of the process flow discussed.
	Slides WECA05 [5.622 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WECA05
About •	paper received ※ 11 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPE07	A High Heat Load Front-End for the Superconducting Wiggler Beamline at SSRF	ion, photon, vacuum, radiation	327
	Y. Li, D. Jia, S. Xue, M. Zhang, W. Zhu SINAP, Shanghai, People’s Republic of China
	A superconducting wiggler (SCW) will be first employed to generate high energy X-rays for ultra-hard X-ray applications beamline at Shanghai synchrotron radiation facility (SSRF). The front-end will handle a heat load of 44.7 kW with a peak power density of 45 kW/mrad², which is much higher than the commissioned ones at SSRF. Overall design of the high heat load front-end has been completed, including one short absorber with a length of 300 mm and three long absorbers longer than 500 mm. Long absorbers have been designed to be made by medium speed wire-cut electrical discharge machining (WEDM-MS) or electron beam welding (EBW). Thermal analyses of all absorbers have also been done to comply with the failure criteria of SSRF.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE07
About •	paper received ※ 08 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017
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FRBA01	A New Crystal Bender for the ID31 Laue-Laue Monochromator	ion, controls, cryogenics, vacuum	409
	M. Magnin-Mattenet, P. Got, V. Honkimaki, A. Vivo ESRF, Grenoble, France
	The ID31 beamline is able to provide X-Ray energies ranging from 20 to 150keV. The energy range 50-150keVis covered by a Laue-Laue monochromator located at 100meters from the source. Two asymmetrically cut Si crystals equipped with benders, based on a new concept, provide an energy resolution ranging from few hundreds of eV down to the Darwin width of few eV. The bender principle, design, manufacture and first commissioning will be described. The virtual source, produced with a white beam transfocator, can be before or after the monochromator. Therefore the bending mechanism must allow both concave and convex configuration with bending radius from 20m to infinite. Each bender is equipped with two home made piezo-jacks in close loop with capacitive sensor. The system is liquid Nitrogen cooled. The thermal behaviour will be described in detail and thermo-mechanical finite element analysis presented.
	Slides FRBA01 [11.565 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-FRBA01
About •	paper received ※ 09 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOPE08

The LNLS Metrology Building

ion, controls, instrumentation, synchrotron

17

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

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

Poster MOPE08 [2.829 MB]

DOI •

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

About •

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

Export •

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

TUAA01

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

ion, controls, synchrotron-radiation, synchrotron

108

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

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

Slides TUAA01 [7.411 MB]

DOI •

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

About •

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

Export •

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TUCA06

The Girders System for the New ESRF Storage Ring

ion, alignment, storage-ring, resonance

147

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

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

Slides TUCA06 [17.229 MB]

DOI •

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

About •

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

Export •

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

TUPE02

Experimental Validated CFD Analysis on Helium Discharge

ion, simulation, experiment, cryogenics

156

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

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

Poster TUPE02 [0.671 MB]

DOI •

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

About •

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

Export •

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

TUPE16

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

ion, synchrotron, focusing, optics

198

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

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

DOI •

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

About •

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

Export •

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

TUPE36

Ground Vibration Monitoring for SXFEL Construction at SSRF

ion, experiment, FEL, site

242

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

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

DOI •

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

About •

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

Export •

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

WEAA02

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

ion, storage-ring, vacuum, scattering

257

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

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

Slides WEAA02 [1.968 MB]

DOI •

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

About •

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

Export •

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

WEBA03

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

ion, photon, dipole, vacuum

277

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

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

Slides WEBA03 [4.523 MB]

DOI •

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

About •

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

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WECA05

Superconducting RF System Plans at CLS

ion, cavity, cryomodule, storage-ring

293

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

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

Slides WECA05 [5.622 MB]

DOI •

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

About •

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

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WEPE07

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

ion, photon, vacuum, radiation

327

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

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

DOI •

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

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

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FRBA01

A New Crystal Bender for the ID31 Laue-Laue Monochromator

ion, controls, cryogenics, vacuum

409

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

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

Slides FRBA01 [11.565 MB]

DOI •

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

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

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