Parasitic modes suppression in CW cold tests of 1.3 GHz 9-cell high Q cavities at IHEP Article Swipe

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Zhenghui Mi , Feisi He , Weimin Pan , Peng Sha , Jiyuan Zhai , Xuwen Dai , Song Jina , Zhanjun Zhang , Chao Dong , Baiqi Liu , Hui Zhao , Rui Gea , Jianbing Zhao , Zhihui Mu , Lei Du , Liangrui Sun , Liang Zhang , Conglai Yang , Xiaobing Zheng , Haiying Lin , Guangwei Wang , Xiangcong He ·

YOU? · · 2021 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2103.14288

The CW RF test of 1.3 GHz 9-cell cavity in liquid helium bath at 2 K is a very important key point in the cavity procurement. Some problems can be found through the test, according which to optimized and improve the process of cavity. Recently, Medium temperature (mid-T) furnace bake of 1.3 GHz 9-cell cavities have been carried out at IHEP. Through the proceed of mid-T bake, the quality factor of cavity has been greatly improved. While the excitation of the parasitic modes in the high Q cavities CW cold test has been encountered, which implies an error source for the cavity gradient and quality factor determination. In order to ensure the testing accuracy of superconducting cavity, we have improved the testing system. Finally, the parasitic mode is completely suppressed and the CW RF cold test of high Q cavity is guaranteed.

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/2103.14288
PDF: https://arxiv.org/pdf/2103.14288
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References: 1
Related Works: 10
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DOI: https://doi.org/10.48550/arxiv.2103.14288

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Title: Parasitic modes suppression in CW cold tests of 1.3 GHz 9-cell high Q cavities at IHEP

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Language: en

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Publication year: 2021

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Publication date: 2021-03-26

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Authors: Zhenghui Mi, Feisi He, Weimin Pan, Peng Sha, Jiyuan Zhai, Xuwen Dai, Song Jina, Zhanjun Zhang, Chao Dong, Baiqi Liu, Hui Zhao, Rui Gea, Jianbing Zhao, Zhihui Mu, Lei Du, Liangrui Sun, Liang Zhang, Conglai Yang, Xiaobing Zheng, Haiying Lin, Guangwei Wang, Xiangcong He

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Landing page: https://arxiv.org/abs/2103.14288

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PDF URL: https://arxiv.org/pdf/2103.14288

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