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Low-Temperature Baking Effect of the Radio-Frequency Nb3Sn Thin Film Superconducting Cavity

文献类型：期刊论文

作者Yang, Ziqin1; Huang, Shichun1; He, Yuan1; Lu, Xiangyang3; Guo, Hao1; Li, Chunlong1; Niu, Xiaofei1; Xiong, Pingran1; Song, Yukun1; Wu, Andong1
刊名CHINESE PHYSICS LETTERS
出版日期2021-10-01
卷号38期号:9页码:8
ISSN号0256-307X
DOI10.1088/0256-307X/38/9/092901
通讯作者Yang, Ziqin(yzq@impcas.ac.cn) ; He, Yuan(hey@impcas.ac.cn)
英文摘要The Nb3Sn thin film cavity, having the potential to be operated at a higher temperature and higher gradient compared to the cavity made from bulk niobium, is one of the most promising key technologies for the next-generation radio-frequency superconducting accelerators. In our work, several 1.3 GHz single-cell TESLA-shaped Nb3Sn thin film cavities, coated by the vapor diffusion method, were tested at Peking University and Institute of Modern Physics, Chinese Academy of Sciences. It was observed that the performance of the Nb3Sn thin film cavities in the tests without the slow cooling down procedure and the effective magnetic field shielding was significantly improved by using a low temperature baking at 100 degrees C for 48 hours. Although the peak electric field of the cavity remained unchanged, the rapid drop of the unloaded Q value (Q (0)) with the increasing accelerating field (Q-slope) was effectively eliminated, resulting in an improvement of the Q (0) in the intermediate field region by similar to 8 times. Furthermore, under better test conditions with the shielded magnetic field less than 5 mG and the slow cooling down procedure in the temperature range of 25-15 K, the Q (0) was still improved by about 20%. Our study shows that the low temperature baking can be an effective supplement to the effective post-treatment for the Nb3Sn thin film cavity.
资助项目Youth Innovation Promotion Association of Chinese Academy of Sciences[2020410] ; Major Research Plan of National Natural Science Foundation of China[91426303] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB25000000] ; National Postdoctoral Program for Innovative Talents[BX201700257]
WOS研究方向Physics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:000707213900001
资助机构Youth Innovation Promotion Association of Chinese Academy of Sciences ; Major Research Plan of National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Postdoctoral Program for Innovative Talents
源URL[http://119.78.100.186/handle/113462/136156]  
专题中国科学院近代物理研究所
通讯作者Yang, Ziqin; He, Yuan
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Ziqin,Huang, Shichun,He, Yuan,et al. Low-Temperature Baking Effect of the Radio-Frequency Nb3Sn Thin Film Superconducting Cavity[J]. CHINESE PHYSICS LETTERS,2021,38(9):8.
APA Yang, Ziqin.,Huang, Shichun.,He, Yuan.,Lu, Xiangyang.,Guo, Hao.,...&Zhan, Wenlong.(2021).Low-Temperature Baking Effect of the Radio-Frequency Nb3Sn Thin Film Superconducting Cavity.CHINESE PHYSICS LETTERS,38(9),8.
MLA Yang, Ziqin,et al."Low-Temperature Baking Effect of the Radio-Frequency Nb3Sn Thin Film Superconducting Cavity".CHINESE PHYSICS LETTERS 38.9(2021):8.

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来源：近代物理研究所

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