MEDSI2023 - List of Authors (Zhu, B.L.)

Paper	Title	Page
TUPYP024	Study of the TiZrV Getter Film Deposited on the Inner Surface of HEPS Undulator Vacuum Tube
	B.L. Zhu IHEP CSNS, Guangdong Province, People’s Republic of China
	The clean and stable ultra-high vacuum environment of the particle accelerator storage ring can reduce the beam loss caused by gas scattering, which is the basis for the long-term stable operation of the beam. The HEPS undulator vacuum system is a very small aperture elliptical pipe with an inner diameter of 22×7 mm. In order to meet the requirements of ultra-high vacuum of the narrow-gap insertion devices vacuum system, a non-evaporable getter (NEG) film is deposited on the inner wall of the tube. In this study, a magnetron sputtering coating system suitable for depositing NEG films on the inner wall of a narrow-gap elliptical pipe was designed and built, and TiZrV films were successfully obtained on the inner wall of an elliptical pipe. The microstructure, deposition rate, crystal structure and chemical composition of TiZrV thin films were studied by scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy, respectively. The results show that the TiZrV film has a columnar structure and its crystal structure is amorphous. The atomic ratio of the three chemical elements in the TiZrV film is located in the low temperature activation region.
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THPPP041	Design of HEPS Booster Synchronous Radiation Light Extraction System
	J.M. Liu, S.M. Liu, X.Y. Sun, B. Tan, P.C. Wang DNSC, Dongguan, People’s Republic of China Y.S. Ma, D.C. Zhu IHEP, Beijing, People’s Republic of China B.L. Zhu IHEP CSNS, Guangdong Province, People’s Republic of China
	The HEPS Booster synchronous radiation light extraction system is a bending magnet source designed specifically for Booster beam size monitor, consisting of a vacuum chamber, diaphragm, and reflector. The function of the system is to provide specific synchrotron radiation light for the optical imaging system to measure the beam size. At present, the system has been successfully manufactured and installed. This article will introduce its design, thermal analysis, and manufacturing accuracy.
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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

TUPYP024

Study of the TiZrV Getter Film Deposited on the Inner Surface of HEPS Undulator Vacuum Tube

B.L. Zhu
IHEP CSNS, Guangdong Province, People’s Republic of China

The clean and stable ultra-high vacuum environment of the particle accelerator storage ring can reduce the beam loss caused by gas scattering, which is the basis for the long-term stable operation of the beam. The HEPS undulator vacuum system is a very small aperture elliptical pipe with an inner diameter of 22×7 mm. In order to meet the requirements of ultra-high vacuum of the narrow-gap insertion devices vacuum system, a non-evaporable getter (NEG) film is deposited on the inner wall of the tube. In this study, a magnetron sputtering coating system suitable for depositing NEG films on the inner wall of a narrow-gap elliptical pipe was designed and built, and TiZrV films were successfully obtained on the inner wall of an elliptical pipe. The microstructure, deposition rate, crystal structure and chemical composition of TiZrV thin films were studied by scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy, respectively. The results show that the TiZrV film has a columnar structure and its crystal structure is amorphous. The atomic ratio of the three chemical elements in the TiZrV film is located in the low temperature activation region.

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THPPP041

Design of HEPS Booster Synchronous Radiation Light Extraction System

J.M. Liu, S.M. Liu, X.Y. Sun, B. Tan, P.C. Wang
DNSC, Dongguan, People’s Republic of China
Y.S. Ma, D.C. Zhu
IHEP, Beijing, People’s Republic of China
B.L. Zhu
IHEP CSNS, Guangdong Province, People’s Republic of China

The HEPS Booster synchronous radiation light extraction system is a bending magnet source designed specifically for Booster beam size monitor, consisting of a vacuum chamber, diaphragm, and reflector. The function of the system is to provide specific synchrotron radiation light for the optical imaging system to measure the beam size. At present, the system has been successfully manufactured and installed. This article will introduce its design, thermal analysis, and manufacturing accuracy.

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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

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