High Q and high gradient performance of the first medium-temperature baking 1.3 GHz cryomodule
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, assembled and tested at IHEP for the Dalian Advanced Light Source (DALS) and CEPC R&D. The 9-cell cavities in the c...
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| creator | Zhai, Jiyuan Pan, Weimin He, Feisi Ge, Rui Mi, Zhenghui Sha, Peng Song, Jin Han, Ruixiong Wang, Qunyao Lin, Haiying Wang, Guangwei Li, Mei Minjing Sang Sun, Liangrui Ye, Rui Zhao, Tongxian Li, Shaopeng Zhu, Keyu Liu, Baiqi Wang, Xiaolong Yang, Xiangchen Bian, Xiaojuan Zhang, Xiangzhen Ma, Huizhou Dai, Xuwen Zhang, Zhanjun Zhang, Liang Zhao, Hui Guo, Runbing Mu, Zhihui Yang, Conglai Zheng, Xiaobing Chao, Dong Huang, Tongming Ma, Qiang Zheng, Hongjuan Liu, Ming Wang, Zihan Zhou, Wenzhong |
| description | 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, assembled and tested at IHEP for the Dalian Advanced Light Source (DALS) and CEPC R&D. The 9-cell cavities in the cryomodule achieved an unprecedented highest average Q0 of 3.8E10 at 16 MV/m and 3.6E10 at 21 MV/m in the horizontal test. The cryomodule can operate stably up to a total CW RF voltage greater than 191 MV, with an average cavity CW accelerating gradient of more than 23 MV/m. The results significantly exceed the specifications of CEPC, DALS and the other high repetition rate free electron laser facilities (LCLS-II, LCLS-II-HE, SHINE, S3FEL). There is evidence that the mid-T bake cavity may not require fast cool-down or long processing time in the cryomodule. This paper reviews the cryomodule performance and discusses some important issues in cryomodule assembly and testing. |
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The 9-cell cavities in the cryomodule achieved an unprecedented highest average Q0 of 3.8E10 at 16 MV/m and 3.6E10 at 21 MV/m in the horizontal test. The cryomodule can operate stably up to a total CW RF voltage greater than 191 MV, with an average cavity CW accelerating gradient of more than 23 MV/m. The results significantly exceed the specifications of CEPC, DALS and the other high repetition rate free electron laser facilities (LCLS-II, LCLS-II-HE, SHINE, S3FEL). There is evidence that the mid-T bake cavity may not require fast cool-down or long processing time in the cryomodule. This paper reviews the cryomodule performance and discusses some important issues in cryomodule assembly and testing.</description><identifier>EISSN: 2331-8422</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Baking ; Free electron lasers ; Holes ; Light sources ; Radio frequency</subject><ispartof>arXiv.org, 2023-12</ispartof><rights>2023. 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Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>777,781</link.rule.ids></links><search><creatorcontrib>Zhai, Jiyuan</creatorcontrib><creatorcontrib>Pan, Weimin</creatorcontrib><creatorcontrib>He, Feisi</creatorcontrib><creatorcontrib>Ge, Rui</creatorcontrib><creatorcontrib>Mi, Zhenghui</creatorcontrib><creatorcontrib>Sha, Peng</creatorcontrib><creatorcontrib>Song, Jin</creatorcontrib><creatorcontrib>Han, Ruixiong</creatorcontrib><creatorcontrib>Wang, Qunyao</creatorcontrib><creatorcontrib>Lin, Haiying</creatorcontrib><creatorcontrib>Wang, Guangwei</creatorcontrib><creatorcontrib>Li, Mei</creatorcontrib><creatorcontrib>Minjing Sang</creatorcontrib><creatorcontrib>Sun, Liangrui</creatorcontrib><creatorcontrib>Ye, Rui</creatorcontrib><creatorcontrib>Zhao, Tongxian</creatorcontrib><creatorcontrib>Li, Shaopeng</creatorcontrib><creatorcontrib>Zhu, Keyu</creatorcontrib><creatorcontrib>Liu, Baiqi</creatorcontrib><creatorcontrib>Wang, Xiaolong</creatorcontrib><creatorcontrib>Yang, Xiangchen</creatorcontrib><creatorcontrib>Bian, Xiaojuan</creatorcontrib><creatorcontrib>Zhang, Xiangzhen</creatorcontrib><creatorcontrib>Ma, Huizhou</creatorcontrib><creatorcontrib>Dai, Xuwen</creatorcontrib><creatorcontrib>Zhang, Zhanjun</creatorcontrib><creatorcontrib>Zhang, Liang</creatorcontrib><creatorcontrib>Zhao, Hui</creatorcontrib><creatorcontrib>Guo, Runbing</creatorcontrib><creatorcontrib>Mu, Zhihui</creatorcontrib><creatorcontrib>Yang, Conglai</creatorcontrib><creatorcontrib>Zheng, Xiaobing</creatorcontrib><creatorcontrib>Chao, Dong</creatorcontrib><creatorcontrib>Huang, Tongming</creatorcontrib><creatorcontrib>Ma, Qiang</creatorcontrib><creatorcontrib>Zheng, Hongjuan</creatorcontrib><creatorcontrib>Liu, Ming</creatorcontrib><creatorcontrib>Wang, Zihan</creatorcontrib><creatorcontrib>Zhou, Wenzhong</creatorcontrib><title>High Q and high gradient performance of the first medium-temperature baking 1.3 GHz cryomodule</title><title>arXiv.org</title><description>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, assembled and tested at IHEP for the Dalian Advanced Light Source (DALS) and CEPC R&D. The 9-cell cavities in the cryomodule achieved an unprecedented highest average Q0 of 3.8E10 at 16 MV/m and 3.6E10 at 21 MV/m in the horizontal test. The cryomodule can operate stably up to a total CW RF voltage greater than 191 MV, with an average cavity CW accelerating gradient of more than 23 MV/m. The results significantly exceed the specifications of CEPC, DALS and the other high repetition rate free electron laser facilities (LCLS-II, LCLS-II-HE, SHINE, S3FEL). There is evidence that the mid-T bake cavity may not require fast cool-down or long processing time in the cryomodule. This paper reviews the cryomodule performance and discusses some important issues in cryomodule assembly and testing.</description><subject>Baking</subject><subject>Free electron lasers</subject><subject>Holes</subject><subject>Light sources</subject><subject>Radio frequency</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNqNis0KgkAYAJcgSMp3-KCzobuado7Ka9C52PRT19xd259DPX0GPUCnGZiZkYAylkRFSumChNb2cRzTbU6zjAXkWoq2gzNwVUP31dbwWqByMKJptJFcVQi6AdchNMJYBxJr4WXkUE4Ld94g3PlDqBaSDYNT-YbKvLTUtR9wReYNHyyGPy7J-ni47MtoNPrp0bpbr71RU7rRYlckaV7QjP13fQDSDUNX</recordid><startdate>20231202</startdate><enddate>20231202</enddate><creator>Zhai, Jiyuan</creator><creator>Pan, Weimin</creator><creator>He, Feisi</creator><creator>Ge, 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Hongjuan</creator><creator>Liu, Ming</creator><creator>Wang, Zihan</creator><creator>Zhou, Wenzhong</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope></search><sort><creationdate>20231202</creationdate><title>High Q and high gradient performance of the first medium-temperature baking 1.3 GHz cryomodule</title><author>Zhai, Jiyuan ; Pan, Weimin ; He, Feisi ; Ge, Rui ; Mi, Zhenghui ; Sha, Peng ; Song, Jin ; Han, Ruixiong ; Wang, Qunyao ; Lin, Haiying ; Wang, Guangwei ; Li, Mei ; Minjing Sang ; Sun, Liangrui ; Ye, Rui ; Zhao, Tongxian ; Li, Shaopeng ; Zhu, Keyu ; Liu, Baiqi ; Wang, Xiaolong ; Yang, Xiangchen 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Xiangchen</au><au>Bian, Xiaojuan</au><au>Zhang, Xiangzhen</au><au>Ma, Huizhou</au><au>Dai, Xuwen</au><au>Zhang, Zhanjun</au><au>Zhang, Liang</au><au>Zhao, Hui</au><au>Guo, Runbing</au><au>Mu, Zhihui</au><au>Yang, Conglai</au><au>Zheng, Xiaobing</au><au>Chao, Dong</au><au>Huang, Tongming</au><au>Ma, Qiang</au><au>Zheng, Hongjuan</au><au>Liu, Ming</au><au>Wang, Zihan</au><au>Zhou, Wenzhong</au><format>book</format><genre>document</genre><ristype>GEN</ristype><atitle>High Q and high gradient performance of the first medium-temperature baking 1.3 GHz cryomodule</atitle><jtitle>arXiv.org</jtitle><date>2023-12-02</date><risdate>2023</risdate><eissn>2331-8422</eissn><abstract>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, assembled and tested at IHEP for the Dalian Advanced Light Source (DALS) and CEPC R&D. The 9-cell cavities in the cryomodule achieved an unprecedented highest average Q0 of 3.8E10 at 16 MV/m and 3.6E10 at 21 MV/m in the horizontal test. The cryomodule can operate stably up to a total CW RF voltage greater than 191 MV, with an average cavity CW accelerating gradient of more than 23 MV/m. The results significantly exceed the specifications of CEPC, DALS and the other high repetition rate free electron laser facilities (LCLS-II, LCLS-II-HE, SHINE, S3FEL). There is evidence that the mid-T bake cavity may not require fast cool-down or long processing time in the cryomodule. This paper reviews the cryomodule performance and discusses some important issues in cryomodule assembly and testing.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><oa>free_for_read</oa></addata></record> |
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| subjects | Baking Free electron lasers Holes Light sources Radio frequency |
| title | High Q and high gradient performance of the first medium-temperature baking 1.3 GHz cryomodule |
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