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TY - CONF AU - Xiao, B.P. AU - Brennan, J.M. AU - Brutus, J.C. AU - Mernick, K. AU - Polizzo, S. AU - Seberg, S.K. AU - Severino, F. AU - Smith, K.S. AU - Zaltsman, A. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Operational Experience and Redesign of the Tuner without Spring Fingers for the LEReC Warm Cavity J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - A folded coaxial tuner without spring fingers was designed for the Low Energy RHIC electron Cooler (LEReC) 2.1 GHz warm cavity. During RHIC run 2019, this tuner was found to cause cavity trips via different failure modes. After analyzing these failure modes, a new straight coaxial tuner without spring fingers was proposed and was installed. We show the operational experience of the new tuner in this paper. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1116 EP - 1118 KW - cavity KW - operation KW - vacuum KW - SRF KW - electron DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-MOPAB359 UR - https://jacow.org/ipac2021/papers/mopab359.pdf ER -