Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2019, Vol. 30 ›› Issue (7): 105 doi: 10.1007/s41365-019-0628-9


Power Losses caused by Longitudinal HOMs In 1.3GHz Cryomodule Of SHINE

Jun-Jie Guo1,2 Qiang Gu1,3 Meng Zhang3 Zhen Wang3 Jian-Hao Tan1,3   

  1. 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2University of Chinese Academy of Sciences, Beijing 100049, China
    3Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
  • Received:2019-01-01 Revised:2019-03-22 Accepted:2019-03-31
  • Contact: Jun-Jie Guo
  • Supported by:
    This work was supported by the Frontier Research of Large Science Installation ( 2016YFA0401902 ) and the Youth Innovation Promotion Association CAS (No. 2018300)
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Jun-Jie Guo, Qiang Gu, Meng Zhang, Zhen Wang, Jian-Hao Tan. Power Losses caused by Longitudinal HOMs In 1.3GHz Cryomodule Of SHINE.Nuclear Science and Techniques, 2019, 30(7): 105     doi: 10.1007/s41365-019-0628-9

Abstract: Shanghai high-repetition-rate XFEL and extreme light facility (SHINE), the first hard XFEL based on a superconducting accelerated structure in China, is now under development at the Shanghai Institute of Applied Physics, Chinese Academy of Sciences. In this paper, power losses caused by trapped longitudinal high-order modes (HOM), steady-state loss, and transient loss generated by untrapped HOMs in the 1.3-GHz SHINE cryomodule are investigated and calculated. The heat load generated by resistive wall wakefields is considered as well. Results are presented for power losses of every element in the 1.3-GHz cryomodule, caused by HOM excitation in the acceleration RF system of the continuous wave linac of SHINE.

Key words: Power loss, Higher-order modes (HOMs), Resistive wall wakefields, Impedance, Superconducting cavities