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Sakai, Hiroshi; Umemori, Kensei; Kako, Eiji
Proceedings of the 16th annual meeting of Particle Accelerator Society of Japan2019
Proceedings of the 16th annual meeting of Particle Accelerator Society of Japan2019
AbstractAbstract
[en] We developed ERL main linac cryomodule for Compact ERL (cERL) in KEK. The module consists of two 9-cell 1.3 GHz superconducting cavities. After construction of cERL recirculation loop, beam operation was started in 2013 Dec. First electron beam of 20 MeV successfully passed the main linac cavities. Beam current increased step by step and currently reached to 1 mA (CW). Energy recovery has successfully achieved. However, field emission was one of the problems for long term operation. Therefore, the performance of the SRF cavities through long term beam operation has been investigated. In this paper, details of SRF beam operation, degradation, applied recovery methods are described. (author)
Original Title
Compact ERLにおける長期ビーム運転下での主加速器部超伝導空洞性能の推移
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Source
Particle Accelerator Society of Japan, Tokyo (Japan); [1296 p.]; 2019; p. 478-482; PASJ2019: 16. annual meeting of Particle Accelerator Society of Japan; Kyoto (Japan); 31 Jul - 3 Aug 2019; Available from https://www.pasj.jp/web_publish/pasj2019/proceedings/PDF/WEPI/WEPI019.pdf; Available from https://www.pasj.jp/web_publish/pasj2019/proceedings/index.html; 19 refs., 8 figs., 4 tabs.
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Conference
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