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TY - CONF AU - Legg, R.A. AU - Cheng, G. AU - Daly, E. AU - Davis, G.K. AU - Drury, M.A. AU - Fischer, J.F. AU - Hiatt, T. AU - Huque, N.A. AU - King, L.K. AU - Preble, J.P. AU - Reilly, A.V. AU - Stirbet, M. AU - Wilson, K.M. ED - Schaa, Volker RW ED - He, Yuan ED - Li, Lu ED - Zhao, Ning TI - LCLS-II Cryomodule Production at JLab J2 - Proc. of SRF2017, Lanzhou, China, July 17-21, 2017 C1 - Lanzhou, China T2 - International Conference on RF Superconductivity T3 - 18 LA - english AB - The LCLS-II cryomodule construction program leverages the mature XFEL cryomodule design to produce technologically sophisticated cryomodules with a minimum of R&D according to an accelerated manufacturing schedule. Jlab, as one of the partner labs, is producing 18 cryomodules for LCLS-II. To meet the quality and schedule demands of LCLS-II, many upgrades to the JLAB cryomodule assembly infrastructure and techniques have been made. JLab has installed a new cleanroom for string assembly and instituted new protocols to minimize particulate transfer into the cavities during the cryomodule construction process. JLab has also instituted a set of magnetic hygiene protocols to be used during the assembly process to minimize magnetic field impingement on the finished cavity structure. The goal has been to have gradients, both maximum and field emission onset, that do not degrade between the cavity vertical test and final cryomodule qualification, while maximizing the Q0 of each finished cavity. Results from the prototype cryomodule assembly are presented. PB - JACoW CP - Geneva, Switzerland SP - 163 EP - 167 KW - ion KW - cryomodule KW - cavity KW - vacuum KW - SRF DA - 2018/01 PY - 2018 SN - 978-3-95450-191-5 DO - 10.18429/JACoW-SRF2017-MOPB046 UR - http://jacow.org/srf2017/papers/mopb046.pdf ER -