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TY - CONF AU - Huang, S.C. AU - Chu, Q.W. AU - He, Y. AU - Li, C.L. AU - Wu, A.D. AU - Zhang, S.X. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - The Effect of Helium Processing and Plasma Cleaning for Low Beta HWR Cavity J2 - Proc. of SRF2019, Dresden, Germany, 30 June-05 July 2019 CY - Dresden, Germany T2 - International Conference on RF Superconductivity T3 - 19 LA - english AB - The commissioning of the 25 MeV high power and high intensity proton Linac demo for CiADS showed that the performance of the SRF cavities was mainly limited by field emission inside the cavities. Therefore, the techniques of helium processing and reactive oxygen plasma cleaning have been developed to mitigate field emission issues. We performed an experiment with a low beta HWR cavity exposed to air directly and processed by helium and reactive oxygen. In this paper, the details of the experiment will be described, the efficiency of helium processing and plasma cleaning will be compared and discussed PB - JACoW Publishing CP - Geneva, Switzerland SP - 1228 EP - 1230 KW - cavity KW - plasma KW - experiment KW - SRF KW - ion-effects DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-FRCAB6 UR - http://jacow.org/srf2019/papers/frcab6.pdf ER -