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TY - CONF AU - Hartung, W. AU - Chang, W. AU - Kim, S.H. AU - Norton, D. AU - Popielarski, J.T. AU - Saito, K. AU - Schwartz, J.F. AU - Xu, T. AU - Zhang, C. ED - Yamazaki, Yoshishige ED - Raubenheimer, Tor ED - McCausey, Amy ED - Schaa, Volker RW TI - Large-Scale Dewar Testing of FRIB Production Cavities: Results J2 - Proc. of NAPAC2019, Lansing, MI, USA, 01-06 September 2019 CY - Lansing, MI, USA T2 - North American Particle Accelerator Conference T3 - 4 LA - english AB - The Facility for Rare Isotope Beams (FRIB), under construction at Michigan State University (MSU), includes a superconducting driver linac to deliver ion beams at 200 MeV per nucleon. The driver linac requires 10⁴ quarter-wave resonators (QWRs, β = 0.041 and 0.085) and 220 half-wave resonators (HWRs, β = 0.29 and 0.54). The jacketed resonators are Dewar tested at MSU before installation into cryomodules. The cryomodules for β = 0.041, 0.085, and 0.29 have been completed and certified; 89% of the β = 0.54 HWRs have been certified (as of May 2019). The Dewar certification tests have provided valuable information on the performance of production QWRs and HWRs at 4.3 K and 2 K and on performance limits. Results will be presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 270 EP - 273 KW - cavity KW - cryomodule KW - SRF KW - MMI KW - linac DA - 2019/10 PY - 2019 SN - 2673-7000 SN - 978-3-95450-223-3 DO - doi:10.18429/JACoW-NAPAC2019-MOPLO17 UR - http://jacow.org/napac2019/papers/moplo17.pdf ER -