Fabrication, tuning, and high-gradient testing of an X-band traveling-wave accelerating structure for VIGAS

Xian-Cai Lin; Hao Zha; Jia-Ru Shi; Qiang Gao; Jia-Yang Liu; Liu-Yuan Zhou; Jian Gao; Huai-Bi Chen; Chuan-Xiang Tang

doi:10.1007/s41365-022-01086-y

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Fabrication, tuning, and high-gradient testing of an X-band traveling-wave accelerating structure for VIGAS

ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS | Updated：2022-09-26

- Fabrication, tuning, and high-gradient testing of an X-band traveling-wave accelerating structure for VIGAS
- Nuclear Science and Techniques Vol. 33, Issue 8, Article number: 102(2022)
- Affiliations：
  
  1.Department of Engineering Physics, Tsinghua University, Beijing 100084, China
  2.Key Laboratory of Particle and Radiation Imaging (Tsinghua University), Ministry of Education, Beijing 100084, China
- Author bio：
  
  *shij@mail.tsinghua.edu.cn
- Funds：
- DOI：10.1007/s41365-022-01086-y
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Xian-Cai Lin, Hao Zha, Jia-Ru Shi, et al. Fabrication, tuning, and high-gradient testing of an X-band traveling-wave accelerating structure for VIGAS. [J]. Nuclear Science and Techniques 33(8):102(2022)
DOI：

Xian-Cai Lin, Hao Zha, Jia-Ru Shi, et al. Fabrication, tuning, and high-gradient testing of an X-band traveling-wave accelerating structure for VIGAS. [J]. Nuclear Science and Techniques 33(8):102(2022) DOI： 10.1007/s41365-022-01086-y.

摘要

Abstract

X-band high-gradient linear accelerators are a challenging and attractive technology for compact electron linear-accelerator facilities. The Very Compact Inverse Compton Scattering Gamma-ray Source (VIGAS) program at Tsinghua University will utilize X-band high-gradient accelerating structures to boost the electron beam from 50 to 350 MeV over a short distance. A constant-impedance traveling-wave structure consisting of 72 cells working in the 2π/3 mode was designed and fabricated for this project. Precise tuning and detailed measurements were successfully applied to the structure. After 180 h of conditioning in the Tsinghua high-power test stand, the structure reached a target gradient of 80 MV/m. The breakdown rate versus gradient of this structure was measured and analyzed.

关键词

Keywords

Traveling-wave accelerating structureX-band high gradientTuning methodHigh-power test

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