MEDSI2020 - List of Keywords (solenoid)

Paper	Title	Other Keywords	Page
MOPB02	Cryogenic Systems for Optical Elements Cooling at Sirius/LNLS	controls, optics, cryogenics, vacuum	21
	M. Saveri Silva, M.P. Calcanha, G.V. Claudiano, A.F.M. Fontoura, B.A. Francisco, L.M. Kofukuda, F.R. Lena, F. Meneau, G.B.Z.L. Moreno, G.L.M.P. Rodrigues, L. Sanfelici, H.C.N. Tolentino, L.M. Volpe LNLS, Campinas, Brazil J.H. Řežende CNPEM, Campinas, SP, Brazil
	Funding: Ministry of Science, Technology and Innovation (MCTI) Sirius, the Brazilian 4th-generation light source at the Brazilian Synchrotron Light Laboratory (LNLS), presents high-performance requirements in terms of preserving photon-beam quality, particularly regarding wavefront integrity and position stability. In this context, it is imperative that many silicon optical elements* be effectively cooled, such that temperatures and their control-related parameters can be precisely handled to the point in which thermal effects are acceptable concerning figure distortions and drifts at different timescales. For this class of precision equipment, the required performance can only be achieved with robust thermal management.** For this, relevant aspects related to the implementation of liquid nitrogen cooling systems need to be emphasized. Currently, two solutions are present at the first-phase beamlines, according to the component thermal load: (1) an in-house low-cost system for components under moderate loads (< 50 W), such as the mirror systems and the four-bounce monochromators, comprising a commercial cryostat connected to an instrumented vessel, whose level and pressure are controlled by the standard beamline automation system that can automatically feed it from a secondary service unit or a dedicated transfer line; (2) a commercial cryocooler for high-heat-load applications (50 - 3000 W), such as the double-crystal monochromators. This work presents the in-house solution: requirements, design aspects, operation range, as well as several discoveries and improvements deployed during the commissioning of the CATERETÊ and the CARNAÚBA beamlines, such as the prevention of ice formation, stabilization of both thermal load and flow-rate, and auto-filling parameters, among others. TOLENTINO. Innovative instruments (…) for the CARNAÚBA beamline at Sirius-LNLS. SRI (2018). *VOLPE. Performance validation of the thermal model for optical components. Submit to MEDSI (2020)
	Poster MOPB02 [2.364 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPB02
About •	paper received ※ 25 July 2021 paper accepted ※ 13 October 2021 issue date ※ 09 November 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPB01	LINAC Section 3 and 4 Replacement at the Canadian Light Source	linac, GUI, gun, simulation	266
	X. Li, X. Shen, R. Zwarich CLS, Saskatoon, Saskatchewan, Canada
	The Canadian Light Source Inc. (CLSI), opened in 2004 and located in Saskatoon, Saskatchewan, Canada, is a third-generation synchrotron light source facility with a 2.9 GeV storage ring. CLSI was built based on the Saskatchewan Accelerator Laboratory (SAL) with its LINAC. The SAL LINAC was built in 1960s and refurbished to operate at 250 MeV in 2002. It was also de-signed at an average beam power up to 46KW. To be used by CLS, the LINAC was modified for operation at pulse power levels of 25 MW with the current 100 mA. The modified LINAC consists of an electron gun and section 0 to 6, Energy Compression System (ECS) and Section 7. The LINAC has kept a steady performance throughout the years, along with many repairs and replacements ’ most of which are preventative. The original Varian type accelerating Sections are planned to be replaced gradual-ly by SLAC type Sections. Section 3 and 4 are two of the original 3 Varian type sections left in CLS - with over 55 years of service, they were accumulating vacuum leak problems from time to time. The replacement of Section 3 and 4 was completed in 2020. The mechanical consideration of the Section 3 and 4 replacement mainly includes upgrading supporting structures, designing Wave-guides, modifying LCW systems, getting solution to move the sections around in the LINAC tunnel, etc.
	Poster WEPB01 [1.859 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPB01
About •	paper received ※ 13 July 2021 paper accepted ※ 27 September 2021 issue date ※ 29 October 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOPB02

Cryogenic Systems for Optical Elements Cooling at Sirius/LNLS

controls, optics, cryogenics, vacuum

21

M. Saveri Silva, M.P. Calcanha, G.V. Claudiano, A.F.M. Fontoura, B.A. Francisco, L.M. Kofukuda, F.R. Lena, F. Meneau, G.B.Z.L. Moreno, G.L.M.P. Rodrigues, L. Sanfelici, H.C.N. Tolentino, L.M. Volpe
LNLS, Campinas, Brazil
J.H. Řežende
CNPEM, Campinas, SP, Brazil

Funding: Ministry of Science, Technology and Innovation (MCTI)
Sirius, the Brazilian 4th-generation light source at the Brazilian Synchrotron Light Laboratory (LNLS), presents high-performance requirements in terms of preserving photon-beam quality, particularly regarding wavefront integrity and position stability. In this context, it is imperative that many silicon optical elements* be effectively cooled, such that temperatures and their control-related parameters can be precisely handled to the point in which thermal effects are acceptable concerning figure distortions and drifts at different timescales. For this class of precision equipment, the required performance can only be achieved with robust thermal management.** For this, relevant aspects related to the implementation of liquid nitrogen cooling systems need to be emphasized. Currently, two solutions are present at the first-phase beamlines, according to the component thermal load: (1) an in-house low-cost system for components under moderate loads (< 50 W), such as the mirror systems and the four-bounce monochromators, comprising a commercial cryostat connected to an instrumented vessel, whose level and pressure are controlled by the standard beamline automation system that can automatically feed it from a secondary service unit or a dedicated transfer line; (2) a commercial cryocooler for high-heat-load applications (50 - 3000 W), such as the double-crystal monochromators. This work presents the in-house solution: requirements, design aspects, operation range, as well as several discoveries and improvements deployed during the commissioning of the CATERETÊ and the CARNAÚBA beamlines, such as the prevention of ice formation, stabilization of both thermal load and flow-rate, and auto-filling parameters, among others.
*TOLENTINO. Innovative instruments (…) for the CARNAÚBA beamline at Sirius-LNLS. SRI (2018).
**VOLPE. Performance validation of the thermal model for optical components. Submit to MEDSI (2020)

Poster MOPB02 [2.364 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPB02

About •

paper received ※ 25 July 2021 paper accepted ※ 13 October 2021 issue date ※ 09 November 2021

Export •

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

WEPB01

LINAC Section 3 and 4 Replacement at the Canadian Light Source

linac, GUI, gun, simulation

266

X. Li, X. Shen, R. Zwarich
CLS, Saskatoon, Saskatchewan, Canada

The Canadian Light Source Inc. (CLSI), opened in 2004 and located in Saskatoon, Saskatchewan, Canada, is a third-generation synchrotron light source facility with a 2.9 GeV storage ring. CLSI was built based on the Saskatchewan Accelerator Laboratory (SAL) with its LINAC. The SAL LINAC was built in 1960s and refurbished to operate at 250 MeV in 2002. It was also de-signed at an average beam power up to 46KW. To be used by CLS, the LINAC was modified for operation at pulse power levels of 25 MW with the current 100 mA. The modified LINAC consists of an electron gun and section 0 to 6, Energy Compression System (ECS) and Section 7. The LINAC has kept a steady performance throughout the years, along with many repairs and replacements ’ most of which are preventative. The original Varian type accelerating Sections are planned to be replaced gradual-ly by SLAC type Sections. Section 3 and 4 are two of the original 3 Varian type sections left in CLS - with over 55 years of service, they were accumulating vacuum leak problems from time to time. The replacement of Section 3 and 4 was completed in 2020. The mechanical consideration of the Section 3 and 4 replacement mainly includes upgrading supporting structures, designing Wave-guides, modifying LCW systems, getting solution to move the sections around in the LINAC tunnel, etc.

Poster WEPB01 [1.859 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPB01

About •

paper received ※ 13 July 2021 paper accepted ※ 27 September 2021 issue date ※ 29 October 2021

Export •

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