Ultra-high quality factor and ultra-high accelerating gradient achievements in a 1.3 GHz continuous wave cryomodule
-
作者
Chen, Jin-Fang; Zong, Yue; Pu, Xiao-Yun; Xiang, Sheng-Wang; Xing, Shuai; Li, Zheng; Liu, Xu-Ming; Zhai, Yan-Fei; Wu, Xiao-Wei; He, Yong-Zhou; Gong, Ling-Ling; Zhang, Ji-Dong; Cao, Shan-Shan; Fang, Wen-Ding; Zhang, Bin-Tuan; Xu, Kai; Yu, Yi-Bo; Chen, Guang-Hua; Lu, Li-Jun; Huang, Ya-Wei; Zhao, Shen-Jie; Hou, Hong-Tao; Ma, Zhen-Yu; Zhao, Ye-Liang; Zheng, Xiang; Sun, Jiu-Ce; Sun, Sen; Jiang, Zhi-Qiang; Zhao, Yu-Bin; Zhang, Meng; Yan, Ying-Bing; Liu, Yi-Yong; Gu, Qiang; Liu, Bo; Yin, Li-Xin; Wang, Dong; Deng, Hai-Xiao; Zhao, Zhen-Tang
-
刊物名称
NUCLEAR SCIENCE AND TECHNIQUES
-
年、卷、文献号
2025, 2,
-
关键词
Chen, Jin-Fang; Zong, Yue; Pu, Xiao-Yun; Xiang, Sheng-Wang; Xing, Shuai; Li, Zheng; Liu, Xu-Ming; Zhai, Yan-Fei; Wu, Xiao-Wei; He, Yong-Zhou; Gong, Ling-Ling; Zhang, Ji-Dong; Cao, Shan-Shan; Fang, Wen-Ding; Zhang, Bin-Tuan; Xu, Kai; Yu, Yi-Bo; Chen, Guang-Hua; Lu, Li-Jun; Huang, Ya-Wei; Zhao, Shen-Jie; Hou, Hong-Tao; Ma, Zhen-Yu; Zhao, Ye-Liang; Zheng, Xiang; Sun, Jiu-Ce; Sun, Sen; Jiang, Zhi-Qiang; Zhao, Yu-Bin; Zhang, Meng; Yan, Ying-Bing; Liu, Yi-Yong; Gu, Qiang; Liu, Bo; Yin, Li-Xin; Wang, Dong; Deng, Hai-Xiao; Zhao, Zhen-Tang
-
摘要
We report the world-leading performance of a 1.3 GHz cryomodule equipped with eight 9-cell superconducting radio-frequency cavities that underwent a medium-temperature furnace baking process. During continuous wave horizontal testing, these cavities achieved unprecedented average intrinsic quality factors of 4.0x1010\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$}$$\end{document} at 20 MV/m and 3.2x1010\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$}$$\end{document} at 29 MV/m, with no instances of field emission. The cryomodule demonstrates near-complete preservation of ultra-high quality factors and ultra-high accelerating gradients from vertical to horizontal testing, marking a significant milestone in continuous-wave superconducting radio-frequency accelerator technology. This letter presents the cryomodule development experience, including cavity preparation, cryomodule assembly, degaussing, fast cooldown, and performance testing.
