Cryogenic system of the high performance 1.3 GHz 9-cell superconducting radio frequency prototype cryomodule

Pan, Weimin; Ge, Rui; Li, Mei; Han, Ruixiong; Sun, Liangrui; He, Feisi; Zhai, Jiyuan; Li, Shaopeng; Sang, Minjing; Ye, Rui; Zhao, Tongxian; Zhang, Xiangzhen; Yang, Xiaochen; Zhu, Keyu; Chang, Zhengze; Ma, Changcheng; Mi, Zhenghui; Sha, Peng; Jin, Song; Zhou, Wenzhong; Zhang, Zhanjun; Wang, Zihan; Liu, Ming

doi:10.1016/j.applthermaleng.2024.124042

Applied Thermal Engineering

2024

DOI: 10.1016/j.applthermaleng.2024.124042

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Cryogenic system of the high performance 1.3 GHz 9-cell superconducting radio frequency prototype cryomodule

Weimin Pan,

Rui Ge,

Mei Li

et al.

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High Q and high gradient performance of the first medium-temperature baking 1.3 GHz cryomodule

Pan,

Zhai,

et al. 2024

Phys. Rev. Accel. Beams

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The world’s first 1.3 GHz cryomodule containing eight 9-cell superconducting radio-frequency (rf) cavities treated by medium-temperature furnace baking (mid-T bake) was developed at the Institute of High Energy Physics, Chinese Academy of Sciences. The 9-cell cavities in the cryomodule achieved an unprecedented high average intrinsic quality factor (Q0) of 3.8×1010 at 16 MV/m and 3.6×1010 at 21 MV/m in the horizontal test. The cryomodule can operate stably up to a total continuous wave rf voltage greater than 193 MV, with an average cavity usable accelerating gradient of more than 23 MV/m. The results significantly exceed the specifications of Circular Electron Positron Collider and Dalian advanced light source and the other high repetition rate free electron laser facilities [Linac Coherent Light Source II (LCLS-II), LCLS-II-high energy, Shanghai High Repetition Rate X-ray FEL and Extreme Light Facility, Shenzhen Superconducting Soft X-Ray Free Electron Laser, etc.]. There is evidence that the mid-T bake cavity may not require fast cooldown or long processing time in the cryomodule. This paper reviews the cryomodule performance and discusses some important issues in cryomodule assembly and testing. Published by the American Physical Society 2024

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High Q and high gradient performance of the first medium-temperature baking 1.3 GHz cryomodule

Pan,

Zhai,

et al. 2024

Phys. Rev. Accel. Beams

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Cryogenic system of the high performance 1.3 GHz 9-cell superconducting radio frequency prototype cryomodule

Cited by 1 publication

References 27 publications

High Q and high gradient performance of the first medium-temperature baking 1.3 GHz cryomodule

High Q and high gradient performance of the first medium-temperature baking 1.3 GHz cryomodule

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