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TY - CONF AU - Arkan, T.T. AU - Bafia, D. AU - Bice, D.J. AU - Blowers, J.N. AU - Checchin, M. AU - Cravatta, A.T. AU - Giaccone, B. AU - Grimm, C.J. AU - Hartsell, B.D. AU - Kaluzny, J.A. AU - Martinello, M. AU - Nicol, T.H. AU - Orlov, Y.M. AU - Posen, S. ED - McIntosh, Peter ED - Burt, Graeme ED - Apsimon, Robert ED - Schaa, Volker R.W. TI - 200 MV Record Voltage of vCM and LCLS-II-HE Cryomodules Production Start Fermilab J2 - Proc. of LINAC2022, Liverpool, UK, 28 August-02 September 2022 CY - Liverpool, UK T2 - International Linear Accelerator Conference T3 - 31 LA - english AB - The Linac Coherent Light Source (LCLS) is an X-ray science facility at SLAC National Accelerator Laboratory. The LCLS-II project (an upgrade to LCLS) is in the commissioning phase; the LCLS-II-HE (High Energy) project is another upgrade to the facility, enabling higher energy operation. An electron beam is accelerated using superconducting radio frequency (SRF) cavities built into cryomodules. It is planned to build 24 1.3 GHz standard cryomodules and 1 1.3 GHz single-cavity Buncher Capture Cavity (BCC) cryomodule for the LCLS-II-HE project. Fourteen of these standard cryomodules and one BCC are planned to be assembled and tested at Fermilab. Procurements for standard cryomodule components are nearing completion. The first LCLS-II-HE cryomodule, referred to as the verification cryomodule (vCM) was assembled and tested at Fermilab. Fermilab has completed the assembly of the second cryomodule. This paper presents LCLS-II-HE cryomodule production status at Fermilab, emphasizing the changes done based on the successes, challenges, mitigations, and lessons learned from LCLS-II; validation of the changes with the excellent vCM results. PB - JACoW Publishing CP - Geneva, Switzerland SP - 95 EP - 97 KW - cavity KW - cryomodule KW - SRF KW - vacuum KW - plasma DA - 2022/09 PY - 2022 SN - 2226-0366 SN - 978-3-95450-215-8 DO - doi:10.18429/JACoW-LINAC2022-MOPOPA13 UR - https://jacow.org/linac2022/papers/mopopa13.pdf ER -