MEDSI2023 - List of Authors (Wang, Y.G.)

Paper	Title	Page
WEPPP038	Carbon Film for Copping the Electron Cloud and the Synchrotron-Radiation-Induced Heat Load
	Y.G. Wang IHEP, Beijing, People’s Republic of China
	Carbon material has a high reflectivity on the synchrotron radiation. It might be introduced into the accelerator to eliminate heat load in the cryogenic section induced by the high synchrotron radition. Coating carbon film on the accelerator wall has been confirmed a very effective method to mitigate the electron cloud. Here we will analyze the relatonship between the reflectivity and the secondary electron yield.
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THPPP052	Design and Development of Coated Chamber for In-Air Insertion Devices	352
	P.C. Wang, Y. Wang USTC/NSRL, Hefei, Anhui, People’s Republic of China H. Dong, Y.S. Ma, Y.G. Wang, L. Zhang IHEP, Beijing, People’s Republic of China J.M. Liu, S.M. Liu, X.Y. Sun DNSC, Dongguan, People’s Republic of China B. Tan Institute of High Energy Physics, CAS, Guangdong, People’s Republic of China B.L. Zhu IHEP CSNS, Guangdong Province, People’s Republic of China
	The insertion devices ¿ID¿is an important guarantee for further improving the performance of the light source to meet the needs of different users. For in-air ID (undulator, wiggler, etc.), the magnetic structure is in the air, and the vacuum chamber is in the middle of the magnetic structure to ensure the normal operation of the beam. In order to increase the magnetic field strength, the magnetic gap is generally relatively small. Factors such as small setting space, high precision, and low conductance all pose challenges to the design and processing of vacuum chamber. This paper introduces the development process of the vacuum chamber prototype of the coating type ID for the China ’s first diffraction-limited light source HEPS. The simultaneous analysis and vacuum pressure distribution calculation of the ID are carried out, and the NEG coating scheme is proposed as an more economical means to obtain ultra-high vacuum. The prototype NEG coating progress is introduced.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP052
About •	Received ※ 02 November 2023 — Revised ※ 10 November 2023 — Accepted ※ 12 November 2023 — Issued ※ 18 July 2024
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Paper

Title

Page

WEPPP038

Carbon Film for Copping the Electron Cloud and the Synchrotron-Radiation-Induced Heat Load

Y.G. Wang
IHEP, Beijing, People’s Republic of China

Carbon material has a high reflectivity on the synchrotron radiation. It might be introduced into the accelerator to eliminate heat load in the cryogenic section induced by the high synchrotron radition. Coating carbon film on the accelerator wall has been confirmed a very effective method to mitigate the electron cloud. Here we will analyze the relatonship between the reflectivity and the secondary electron yield.

Cite •

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

THPPP052

Design and Development of Coated Chamber for In-Air Insertion Devices

352

P.C. Wang, Y. Wang
USTC/NSRL, Hefei, Anhui, People’s Republic of China
H. Dong, Y.S. Ma, Y.G. Wang, L. Zhang
IHEP, Beijing, People’s Republic of China
J.M. Liu, S.M. Liu, X.Y. Sun
DNSC, Dongguan, People’s Republic of China
B. Tan
Institute of High Energy Physics, CAS, Guangdong, People’s Republic of China
B.L. Zhu
IHEP CSNS, Guangdong Province, People’s Republic of China

The insertion devices ¿ID¿is an important guarantee for further improving the performance of the light source to meet the needs of different users. For in-air ID (undulator, wiggler, etc.), the magnetic structure is in the air, and the vacuum chamber is in the middle of the magnetic structure to ensure the normal operation of the beam. In order to increase the magnetic field strength, the magnetic gap is generally relatively small. Factors such as small setting space, high precision, and low conductance all pose challenges to the design and processing of vacuum chamber. This paper introduces the development process of the vacuum chamber prototype of the coating type ID for the China ’s first diffraction-limited light source HEPS. The simultaneous analysis and vacuum pressure distribution calculation of the ID are carried out, and the NEG coating scheme is proposed as an more economical means to obtain ultra-high vacuum. The prototype NEG coating progress is introduced.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP052

About •

Received ※ 02 November 2023 — Revised ※ 10 November 2023 — Accepted ※ 12 November 2023 — Issued ※ 18 July 2024

Cite •

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