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

被引：0
|
作者：
Xian-Cai Lin
Hao Zha
Jia-Ru Shi
Qiang Gao
Jia-Yang Liu
Liu-Yuan Zhou
Jian Gao
Huai-Bi Chen
Chuan-Xiang Tang
机构：
[1] Tsinghua University,Department of Engineering Physics
[2] Key Laboratory of Particle and Radiation Imaging (Tsinghua University),undefined
[3] Ministry of Education,undefined
来源：
Nuclear Science and Techniques | 2022年 / 33卷
关键词：
Traveling-wave accelerating structure; X-band high gradient; Tuning method; High-power test;
D O I：
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学科分类号：
摘要：
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.
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