MEDSI2023 - Classification: PHOTON DELIVERY AND PROCESS / Front Ends

Paper	Title	Page
TUPYP002	Equipment Protection Shutter for the Sirius Beamlines Pre Front Ends
	L.C. Arruda, W.L. Andrade, G.T. Barreto, F.G.R. Carrera, D.R. Cavalcante, J.V.B. Franca, A.L. Malandrin, B.M. Ramos, T.M. Rocha, G.L.M.P. Rodrigues, D.R. Silva, G.H. Silva, U.R. Sposito, L.M. Volpe LNLS, Campinas, Brazil P.H.S. Martins, D. Passuelo CNPEM, Campinas, SP, Brazil
	Funding: Work supported by the Brazilian Ministry of Science, Technology and Innovation Due to equipment safety at Sirius, the Brazilian 4th generation synchrotron light source, there are conditions where the need to interrupt the beam being provided by the storage ring to the beamline is mandatory. To minimize the duration and quantity of storage ring beam interruptions as the number of beamlines increases, the installation of a new shutter was proposed between the storage ring and the beamline’s front end. This work presents an overview of the project motivation, modes of failures and their effects, project validation, device operation, and preliminary results. L. C. Arruda et al., "Equipment and Personal Protection Systems for the Sirius Beamlines",ICALEPCS’21, Shanghai, China, Oct. 2021.
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WEPPP015	Progress of Front Ends at HEPS	175
	H. Shi, P. Luo, Y.X. Ma, Y. Tan, H.Y. Wang IHEP, Beijing, People’s Republic of China
	High Energy Photon Source (HEPS) is a 6GeV synchrotron radiation facility building in Huairou, with a storage ring perimeter of 1390.6m and 41 straight sections. In phase I, 15 front ends will be installed, including 14 insertion device front ends and 1 bending magnet front end. These front ends are divided into three types: the Undulator front end, the Wiggler front end, and the BM front end. The U-type front end will receive 766W/mrad² of peak power density and 25kW of the total power. The design of the W-type front end is based on compatibility with various insertion devices, including udulators and wigglers. In this paper, the designs and the progress of HEPS front ends are presented.
	Poster WEPPP015 [2.147 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP015
About •	Received ※ 01 November 2023 — Revised ※ 04 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 08 January 2024
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WEPPP020	A Photon Shutter with a Translational Switching Mechanism at HEPS
	P. Luo, Y.X. Ma, H. Shi, H.Y. Wang IHEP, People’s Republic of China
	Currently under construction on High Energy Photon Source (HEPS) is a 6GeV at 200mA¿4th Generation Synchrotron Light Source in Beijing. In order to meet all experimental light requirements for the three types of insertion devices of the hard X-ray imaging beamline at HEPS, a photon shutter that considers both large optical aperture and high heat load has been designed for the beamline Front-End. By designing a segmented surface with different grazing incidence angles, the power density of the incident surface irradiation is effectively reduced, while the length of the absorber is effectively shortened. The photon shutter can switch between open and closed states with a translational switching mechanism through a cylinder and a horizontal slide. And it can receive a maximum bam size of 25.2×22.7mm2 with handling a maximum total thermal power of up to 17.2kW and a peak power density of up to 652W/mm2. The structure of the photon shutter was introduced. Finally, the thermal analyses on the absorber of the photon shutter under various insertion operating modes was completed to verify its safety performance.
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WEPPP021	A Novel Design of Front End Slits for Hard X-Ray Imaging Beamline in High Energy Photon Source
	Y.X. Ma, P. Luo, H. Shi, H.Y. Wang IHEP, People’s Republic of China
	The Hard X-ray Imaging Beamline, being constructed at High Energy Photon Source (HEPS), will use three types of insertion devices in different operating modes, including CPMU, IAW73 and Mango Wiggler. Therefore, the front end of this beamline will receive synchrotron radiation with different distribution, including peak power density and receiving angle. To adequate diverse power distribution with a general geometry, a novel design of front end slits is development. Its absorbers are reasonably designed into segmented surfaces with different grazing angles according to the power density distribution of synchrotron radiation. Through this design, the slits can withstand thermal loads with a peak power density of 414kW/mrad2 and a maximum section of 30×30mm. Detailed thermal analyses of the absorbers under various operating modes are implemented to verify its safety performance under high heat loads. This new type of slits not only can adjust the aperture according to the needs of different operating modes, but also effectively shorten the length of the absorbers in the limited space of the front end.
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WEPPP025	Application of CuCrZr in the Front-end of Shanghai Synchrotron Radiation Facility	187
	S. Wu, Y. Li, J.N. Liu, J.W. Wang SARI-CAS, Pudong, Shanghai, People’s Republic of China
	Glidcop, oxygen free copper and other materials are mainly used in the Front-end of the Shanghai Synchrotron Radiation Facility(SSRF). CuCrZr material has high heat load capacity, high yield strength and tensile strength, good thermal conductivity and low vacuum outgassing rate. At present, it has been used as a heat sink material in the heat exchanger of nuclear reactors. In this paper, based on the previous process exploration, the Front-end absorber is made of CuCrZr material, and the technical scheme of integral processing of flange and absorber is adopted. The thermal stress and deformation of CuCrZr absorber are analyzed by finite element method, and the processing of CuCrZr absorber is completed, and it is applied to the SSRF BL04Ucanted front end. After a period of electron beam cleaning, vacuum and temperature tests were carried out under high thermal load power, and the characteristics of the material in practical use were analyzed, which proved that CuCrZr material can be used in SSRF under high heat load.
	Poster WEPPP025 [0.815 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP025
About •	Received ※ 01 November 2023 — Revised ※ 06 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 08 December 2023
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WEPPP032	Photon Slits Prototype for High Beam Power Using Rotational Motions	196
	X. Liu, W. Cheng, L. Hudson, H. Patel, A.C. Walters DLS, Oxfordshire, United Kingdom
	A new slits prototype utilising a rotatable oxygen-free high thermal conductivity (OFHC) copper block to absorb high heat load is developed for the Diamond-II upgrade. The slits will be used at front end of Diamond I13 X-ray Imaging and Coherence beamline which has two canted beamline branches. Required by the beamline optics, the front end slits function as virtual sources for the 250 meters long beamline. Working for the dual beam geometry, these specialised slits can vary the size of one x-ray beam with rotational motions while allowing the second beam to pass through unaffected. The rotational operations of the slits are achieved by an innovative commercial flex pivot and a unique in-house designed pivoting flexure.
	Poster WEPPP032 [1.377 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP032
About •	Received ※ 24 October 2023 — Revised ※ 04 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 18 February 2024
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THPPP055	Instrumentation Front-End at NSLS-II
	M.P. Johanson, L. Doom, C. Hetzel, B.N. Kosciuk, D. Padrazo, J. Rank, S.K. Sharma, R.J. Todd BNL, Upton, New York, USA
	The Instrumentation Front End (IFE) is the upstream end of a R&D beamline at NSLS-II for testing new design concepts needed for the future upgrade of NSLS-II and other accelerator facilities. The IFE utilizes a refurbished U68 planar undulator as the source of high intensity synchrotron radiation (x-rays). The main components of the IFE are the undulator source, a fixed mask, two slits with integral XBPMs, and a test photon shutter. The first planned test will establish thermal fatigue design criteria for a copper alloy, CuCrZr, adopted recently for most of the high-power beam stops and slits. A beam stop of Soleil-II (France) made from powder CuCrZr will also be tested for its thermal fatigue life. Another planned test will evaluate a new XBPM design that will help improve the X-ray beam stability. In the second phase the IFE will be extended to a test beamline on the experimental floor. This poster serves to showcase its main features and capabilities, and present future possibilities.
	Poster THPPP055 [3.229 MB]
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Paper

Title

Page

TUPYP002

Equipment Protection Shutter for the Sirius Beamlines Pre Front Ends

L.C. Arruda, W.L. Andrade, G.T. Barreto, F.G.R. Carrera, D.R. Cavalcante, J.V.B. Franca, A.L. Malandrin, B.M. Ramos, T.M. Rocha, G.L.M.P. Rodrigues, D.R. Silva, G.H. Silva, U.R. Sposito, L.M. Volpe
LNLS, Campinas, Brazil
P.H.S. Martins, D. Passuelo
CNPEM, Campinas, SP, Brazil

Funding: Work supported by the Brazilian Ministry of Science, Technology and Innovation
Due to equipment safety at Sirius, the Brazilian 4th generation synchrotron light source, there are conditions where the need to interrupt the beam being provided by the storage ring to the beamline is mandatory. To minimize the duration and quantity of storage ring beam interruptions as the number of beamlines increases, the installation of a new shutter was proposed between the storage ring and the beamline’s front end. This work presents an overview of the project motivation, modes of failures and their effects, project validation, device operation, and preliminary results.
L. C. Arruda et al., "Equipment and Personal Protection Systems for the Sirius Beamlines",ICALEPCS’21, Shanghai, China, Oct. 2021.

Cite •

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

WEPPP015

Progress of Front Ends at HEPS

175

H. Shi, P. Luo, Y.X. Ma, Y. Tan, H.Y. Wang
IHEP, Beijing, People’s Republic of China

High Energy Photon Source (HEPS) is a 6GeV synchrotron radiation facility building in Huairou, with a storage ring perimeter of 1390.6m and 41 straight sections. In phase I, 15 front ends will be installed, including 14 insertion device front ends and 1 bending magnet front end. These front ends are divided into three types: the Undulator front end, the Wiggler front end, and the BM front end. The U-type front end will receive 766W/mrad² of peak power density and 25kW of the total power. The design of the W-type front end is based on compatibility with various insertion devices, including udulators and wigglers. In this paper, the designs and the progress of HEPS front ends are presented.

Poster WEPPP015 [2.147 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP015

About •

Received ※ 01 November 2023 — Revised ※ 04 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 08 January 2024

Cite •

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

WEPPP020

A Photon Shutter with a Translational Switching Mechanism at HEPS

P. Luo, Y.X. Ma, H. Shi, H.Y. Wang
IHEP, People’s Republic of China

Currently under construction on High Energy Photon Source (HEPS) is a 6GeV at 200mA¿4th Generation Synchrotron Light Source in Beijing. In order to meet all experimental light requirements for the three types of insertion devices of the hard X-ray imaging beamline at HEPS, a photon shutter that considers both large optical aperture and high heat load has been designed for the beamline Front-End. By designing a segmented surface with different grazing incidence angles, the power density of the incident surface irradiation is effectively reduced, while the length of the absorber is effectively shortened. The photon shutter can switch between open and closed states with a translational switching mechanism through a cylinder and a horizontal slide. And it can receive a maximum bam size of 25.2×22.7mm2 with handling a maximum total thermal power of up to 17.2kW and a peak power density of up to 652W/mm2. The structure of the photon shutter was introduced. Finally, the thermal analyses on the absorber of the photon shutter under various insertion operating modes was completed to verify its safety performance.

Cite •

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

WEPPP021

A Novel Design of Front End Slits for Hard X-Ray Imaging Beamline in High Energy Photon Source

Y.X. Ma, P. Luo, H. Shi, H.Y. Wang
IHEP, People’s Republic of China

The Hard X-ray Imaging Beamline, being constructed at High Energy Photon Source (HEPS), will use three types of insertion devices in different operating modes, including CPMU, IAW73 and Mango Wiggler. Therefore, the front end of this beamline will receive synchrotron radiation with different distribution, including peak power density and receiving angle. To adequate diverse power distribution with a general geometry, a novel design of front end slits is development. Its absorbers are reasonably designed into segmented surfaces with different grazing angles according to the power density distribution of synchrotron radiation. Through this design, the slits can withstand thermal loads with a peak power density of 414kW/mrad2 and a maximum section of 30×30mm. Detailed thermal analyses of the absorbers under various operating modes are implemented to verify its safety performance under high heat loads. This new type of slits not only can adjust the aperture according to the needs of different operating modes, but also effectively shorten the length of the absorbers in the limited space of the front end.

Cite •

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

WEPPP025

Application of CuCrZr in the Front-end of Shanghai Synchrotron Radiation Facility

187

S. Wu, Y. Li, J.N. Liu, J.W. Wang
SARI-CAS, Pudong, Shanghai, People’s Republic of China

Glidcop, oxygen free copper and other materials are mainly used in the Front-end of the Shanghai Synchrotron Radiation Facility(SSRF). CuCrZr material has high heat load capacity, high yield strength and tensile strength, good thermal conductivity and low vacuum outgassing rate. At present, it has been used as a heat sink material in the heat exchanger of nuclear reactors. In this paper, based on the previous process exploration, the Front-end absorber is made of CuCrZr material, and the technical scheme of integral processing of flange and absorber is adopted. The thermal stress and deformation of CuCrZr absorber are analyzed by finite element method, and the processing of CuCrZr absorber is completed, and it is applied to the SSRF BL04Ucanted front end. After a period of electron beam cleaning, vacuum and temperature tests were carried out under high thermal load power, and the characteristics of the material in practical use were analyzed, which proved that CuCrZr material can be used in SSRF under high heat load.

Poster WEPPP025 [0.815 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP025

About •

Received ※ 01 November 2023 — Revised ※ 06 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 08 December 2023

Cite •

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

WEPPP032

Photon Slits Prototype for High Beam Power Using Rotational Motions

196

X. Liu, W. Cheng, L. Hudson, H. Patel, A.C. Walters
DLS, Oxfordshire, United Kingdom

A new slits prototype utilising a rotatable oxygen-free high thermal conductivity (OFHC) copper block to absorb high heat load is developed for the Diamond-II upgrade. The slits will be used at front end of Diamond I13 X-ray Imaging and Coherence beamline which has two canted beamline branches. Required by the beamline optics, the front end slits function as virtual sources for the 250 meters long beamline. Working for the dual beam geometry, these specialised slits can vary the size of one x-ray beam with rotational motions while allowing the second beam to pass through unaffected. The rotational operations of the slits are achieved by an innovative commercial flex pivot and a unique in-house designed pivoting flexure.

Poster WEPPP032 [1.377 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP032

About •

Received ※ 24 October 2023 — Revised ※ 04 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 18 February 2024

Cite •

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

THPPP055

Instrumentation Front-End at NSLS-II

M.P. Johanson, L. Doom, C. Hetzel, B.N. Kosciuk, D. Padrazo, J. Rank, S.K. Sharma, R.J. Todd
BNL, Upton, New York, USA

The Instrumentation Front End (IFE) is the upstream end of a R&D beamline at NSLS-II for testing new design concepts needed for the future upgrade of NSLS-II and other accelerator facilities. The IFE utilizes a refurbished U68 planar undulator as the source of high intensity synchrotron radiation (x-rays). The main components of the IFE are the undulator source, a fixed mask, two slits with integral XBPMs, and a test photon shutter. The first planned test will establish thermal fatigue design criteria for a copper alloy, CuCrZr, adopted recently for most of the high-power beam stops and slits. A beam stop of Soleil-II (France) made from powder CuCrZr will also be tested for its thermal fatigue life. Another planned test will evaluate a new XBPM design that will help improve the X-ray beam stability. In the second phase the IFE will be extended to a test beamline on the experimental floor. This poster serves to showcase its main features and capabilities, and present future possibilities.

Poster THPPP055 [3.229 MB]

Cite •

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