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TY - CONF AU - Drury, M.A. AU - Daly, E. AU - Huque, N.A. AU - King, L.K. AU - Nelson, J. AU - Ripman, B.H. AU - Solopova, A.D. AU - Zacarias, L.M. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - Current Results From Acceptance Testing of LCLS-II Cryomodules at Jefferson Lab 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 Thomas Jefferson National Accelerator Facility is currently engaged, along with several other Department of Energy (DOE) national laboratories, in the Linac Co-herent Light Source II project (LCLS-II). The SRF Insti-tute at Jefferson Lab is currently building 21 cryomod-ules for this project. The cryomodules are based on the XFEL design and have been modified for continuous wave (CW) operation and to comply with other LCLS-II specifications. Each cryomodule contains eight 9-cell cavities with coaxial power couplers operating at 1.3 GHz. The cryomodule also contain a magnet package that consists of a quadrupole and two correctors. Most of these cryomodules will be tested in the Cryomodule Test Facility (CMTF) at Jefferson Lab before shipment to SLAC. Up to three of these cryomodules will be tested in a test stand set up in the Low Energy Recovery Facility (LERF) at Jefferson Lab. Acceptance testing of the LCLS-II cryomodules began in December 2016. Twelve cryomodules have currently completed Acceptance Test-ing. This paper will summarize the results of those tests. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1007 EP - 1010 KW - cryomodule KW - cavity KW - HOM KW - controls KW - operation DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-THP056 UR - http://jacow.org/srf2019/papers/thp056.pdf ER -