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RIS citation export for THPO008: Long-term 0peration with Beam and Cavity Performance Degradation in Compact-ERL Main Linac at KEK

TY  - CONF
AU  - Sakai, H.
AU  - Furuya, T.
AU  - Kako, E.
AU  - Konomi, T.
AU  - Miura, T.
AU  - Qiu, F.
AU  - Umemori, K.
ED  - Schaa, Volker RW
ED  - Pei, Guoxi
ED  - Chin, Yong Ho
ED  - Fu, Shinian
ED  - Zhao, Ning
TI  - Long-term 0peration with Beam and Cavity Performance Degradation in Compact-ERL Main Linac at KEK
J2  - Proc. of LINAC2018, Beijing, China, 16-21 September 2018
CY  - Beijing, China
T2  - Linear Accelerator Conference
T3  - 29
LA  - english
AB  - 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 1mA (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, we express the measurement of the cavity performances and its degradation during long term beam operation. We also described the details of the cavity performance degradation and some trial for the cavity performance recovery.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 695
EP  - 698
KW  - cavity
KW  - operation
KW  - linac
KW  - vacuum
KW  - cryomodule
DA  - 2019/01
PY  - 2019
SN  - 2226-0366
SN  - 978-3-95450-194-6
DO  - DOI: 10.18429/JACoW-LINAC2018-THPO008
UR  - http://jacow.org/linac2018/papers/thpo008.pdf
ER  -