MEDSI2023 - List of Keywords (linac)

Paper	Title	Other Keywords	Page
WEPPP045	Particle-Free Engineering in SHINE Superconducting Linac Vacuum System	vacuum, cavity, cryomodule, FEL	219
	Y.L. Zhao, Y. Liu, Y.F. Liu, Q. Tang, L. Yin SARI-CAS, Pudong, Shanghai, People’s Republic of China
	The Shanghai high-repetition-rate XFEL and extreme light facility (SHINE) is under design and construction. The linac of SHINE facility is superconducting accelerat-ing structures of high gradients, whose performance is closely related to the cleanliness of superconducting cavities. Therefore, the beam line vacuum system has extremely high requirement for particle free to avoid particles down to submicrometric scale. To control parti-cle contamination, particle-free environment has been built for cavity string assembly and other beam line vacuum components installation, clean assembly criteri-on has been established. Furthermore, the particle gener-ation of vacuum components (valve, pump, et al.) has been studied. Moreover, dedicated equipment and com-ponent (slow pumping & slow venting system, non-contact RF shielding bellow) have been developed for particle-free vacuum system.
	Poster WEPPP045 [1.429 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP045
About •	Received ※ 25 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 28 June 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THOBM04	Development of a Mirror Chamber System for SHINE Project	ISOL, vacuum, experiment, FEL	266
	F. Liu, S. He, W. Li, Z. Wang, T. Wu, H. Yuan, X. Zhang ShanghaiTech University, Shanghai, People’s Republic of China J.H. Chen, L. Zhang, W. Zhu SARI-CAS, Pudong, Shanghai, People’s Republic of China
	A 5-dof mirror chamber test system was developed to adjust offset mirror or distribution mirror for the SHINE project. Two linear guides were used for horizontal translation and rough pitch adjustment. three vertical gearboxes were used for height, roll and yaw adjustments. in the vacuum, a fine flexure structure was engineered for the fine pitch adjustment with a piezo actuator. To prevent the cooling vibrations, the cooling module was seperately fixed and the heat from the mirror was conducted by Ga/In to the cooling block. Pitch angular vibration were measured by several equipments with different conditions. Results showed that the pitch angular vibration is below 40nrad without active vibration control, and below 10nrad with active vibration isolation system.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THOBM04
About •	Received ※ 02 November 2023 — Revised ※ 06 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 23 February 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPPP035	Mechanical System of the U26 Undulator Prototype for SHINE	FEL, undulator, SRF, alignment	325
	S.W. Xiang, H.X. Deng, R. Deng, Z.Q. Jiang, Y.Y. Lei, J.Y. Yang, W. Zhang, T.T. Zhen, S.D. Zhou SARI-CAS, Pudong, Shanghai, People’s Republic of China
	The Shanghai High repetition rate XFEL and Extreme light facility (SHINE) is under construction and aims at generating X-rays between 0.4 and 25 keV with three FEL beamlines at repetition rates of up to 1 MHz[1-3]. The three undulator lines of the SHINE are referred to as the FEL-I, FEL-II, and FEL-III. Shanghai Synchrotron Radiation Facility(SSRF) will manufacture a total of 42 undulators (U26) with a period length of 26mm for FEL-I and 22 undulators (U55) with a period length of 55mm for FEL-II. Both the U26 and U55 are 4m long and use a common mechanical system. By using the specially designed double lever compensation springs can eliminate different magnetic force on the drive units. A U26 prototype has been developed and tested at SSRF. This paper describes the mechanical system design¿simulation and testing results of the U26 prototype, as well as its compatibility with U55.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP035
About •	Received ※ 25 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 11 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPPP053	CLSI LINAC Upgrade Project	operation, electron, controls, RF-structure	355
	L.X. Lin, J.N. Campbell, S.R. Carriere, F. Le Pimpec, K.D. Wyatt CLS, Saskatoon, Saskatchewan, Canada
	The Canadian Light Source Inc. (CLSI) is undertaking a significant Linear Accelerator (LINAC) injector Up-grade Project to enhance both the mechanical reliability and operational stability of Canada’s primary re-search synchrotron facility. In late 2018, a critical gun failure led to a seven-month facility downtime. . This incident raised concerns that the original LINAC from 1980 continued to be a high risk to daily facility operations. Furthermore, several other mechanical systems within the facility, including cooling/heating water, HVAC, and certain aspects of the LINAC vacuum systems, have also aged, resulting in decreased reliability. The upgrade to the LINAC and its associated mechanical systems presents an opportunity to significantly improve the operational reliability of the entire facility.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP053
About •	Received ※ 20 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 June 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

WEPPP045

Particle-Free Engineering in SHINE Superconducting Linac Vacuum System

vacuum, cavity, cryomodule, FEL

219

Y.L. Zhao, Y. Liu, Y.F. Liu, Q. Tang, L. Yin
SARI-CAS, Pudong, Shanghai, People’s Republic of China

The Shanghai high-repetition-rate XFEL and extreme light facility (SHINE) is under design and construction. The linac of SHINE facility is superconducting accelerat-ing structures of high gradients, whose performance is closely related to the cleanliness of superconducting cavities. Therefore, the beam line vacuum system has extremely high requirement for particle free to avoid particles down to submicrometric scale. To control parti-cle contamination, particle-free environment has been built for cavity string assembly and other beam line vacuum components installation, clean assembly criteri-on has been established. Furthermore, the particle gener-ation of vacuum components (valve, pump, et al.) has been studied. Moreover, dedicated equipment and com-ponent (slow pumping & slow venting system, non-contact RF shielding bellow) have been developed for particle-free vacuum system.

Poster WEPPP045 [1.429 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP045

About •

Received ※ 25 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 28 June 2024

Cite •

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

THOBM04

Development of a Mirror Chamber System for SHINE Project

ISOL, vacuum, experiment, FEL

266

F. Liu, S. He, W. Li, Z. Wang, T. Wu, H. Yuan, X. Zhang
ShanghaiTech University, Shanghai, People’s Republic of China
J.H. Chen, L. Zhang, W. Zhu
SARI-CAS, Pudong, Shanghai, People’s Republic of China

A 5-dof mirror chamber test system was developed to adjust offset mirror or distribution mirror for the SHINE project. Two linear guides were used for horizontal translation and rough pitch adjustment. three vertical gearboxes were used for height, roll and yaw adjustments. in the vacuum, a fine flexure structure was engineered for the fine pitch adjustment with a piezo actuator. To prevent the cooling vibrations, the cooling module was seperately fixed and the heat from the mirror was conducted by Ga/In to the cooling block. Pitch angular vibration were measured by several equipments with different conditions. Results showed that the pitch angular vibration is below 40nrad without active vibration control, and below 10nrad with active vibration isolation system.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THOBM04

About •

Received ※ 02 November 2023 — Revised ※ 06 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 23 February 2024

Cite •

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

THPPP035

Mechanical System of the U26 Undulator Prototype for SHINE

FEL, undulator, SRF, alignment

325

S.W. Xiang, H.X. Deng, R. Deng, Z.Q. Jiang, Y.Y. Lei, J.Y. Yang, W. Zhang, T.T. Zhen, S.D. Zhou
SARI-CAS, Pudong, Shanghai, People’s Republic of China

The Shanghai High repetition rate XFEL and Extreme light facility (SHINE) is under construction and aims at generating X-rays between 0.4 and 25 keV with three FEL beamlines at repetition rates of up to 1 MHz[1-3]. The three undulator lines of the SHINE are referred to as the FEL-I, FEL-II, and FEL-III. Shanghai Synchrotron Radiation Facility(SSRF) will manufacture a total of 42 undulators (U26) with a period length of 26mm for FEL-I and 22 undulators (U55) with a period length of 55mm for FEL-II. Both the U26 and U55 are 4m long and use a common mechanical system. By using the specially designed double lever compensation springs can eliminate different magnetic force on the drive units. A U26 prototype has been developed and tested at SSRF. This paper describes the mechanical system design¿simulation and testing results of the U26 prototype, as well as its compatibility with U55.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP035

About •

Received ※ 25 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 11 December 2023

Cite •

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

THPPP053

CLSI LINAC Upgrade Project

operation, electron, controls, RF-structure

355

L.X. Lin, J.N. Campbell, S.R. Carriere, F. Le Pimpec, K.D. Wyatt
CLS, Saskatoon, Saskatchewan, Canada

The Canadian Light Source Inc. (CLSI) is undertaking a significant Linear Accelerator (LINAC) injector Up-grade Project to enhance both the mechanical reliability and operational stability of Canada’s primary re-search synchrotron facility. In late 2018, a critical gun failure led to a seven-month facility downtime. . This incident raised concerns that the original LINAC from 1980 continued to be a high risk to daily facility operations. Furthermore, several other mechanical systems within the facility, including cooling/heating water, HVAC, and certain aspects of the LINAC vacuum systems, have also aged, resulting in decreased reliability. The upgrade to the LINAC and its associated mechanical systems presents an opportunity to significantly improve the operational reliability of the entire facility.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP053

About •

Received ※ 20 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 June 2024

Cite •

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