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TY - CONF AU - Lee, S. AU - Choi, B.H. AU - Hyun, M.O. AU - Jung, Y. AU - Kim, J.W. AU - Kim, Y. AU - Lee, J. AU - Seol, K.T. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - External Q Measurement for Quarter Wave Resonators in RISP 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 - A heavy-ion accelerator facility is under construction for Rare Isotope Science Project(RISP) in Korea. The super conducting cavity, quarter wave resonator(QWR) which consists of driver and post linear accelerator system, is now in the mass production phase. In order to develop the QWR cavity and cryomodule, the RF couplers are fabriacated and tested. In this paper, the study of external Q for QWR coupler will be described. PB - JACoW Publishing CP - Geneva, Switzerland SP - 245 EP - 248 KW - pick-up KW - cavity KW - cryomodule KW - simulation KW - coupling DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-MOP074 UR - http://jacow.org/srf2019/papers/mop074.pdf ER -