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TY - CONF AU - Bachimanchi, R. AU - Allison, T.L. AU - Daly, E. AU - Drury, M.A. AU - Hovater, C. AU - Lahti, G.E. AU - Mounts, C.I. AU - Nelson, R.M. AU - Plawski, T. E. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - CEBAF SRF Performance during Initial 12 GeV Commissioning J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - The Continuous Electron Beam Accelerator Facility (CEBAF) energy upgrade from 6 GeV to 12 GeV includes the installation of eleven new 100 MV cryomodules (88 cavities). The superconducting RF cavities are designed to operate CW at an accelerating gradient of 19.3 MV/m with a QL of 3×107. Not all the cavities were operated at the minimum gradient of 19.3 MV/m with the beam. Though the initial 12 GeV milestones were achieved during the initial commissioning of CEBAF, there are still some issues to be addressed for long term reliable operation of these modules. This paper reports the operational experiences during the initial commissioning and the path forward to improve the performance of C100 (100 MV) modules. PB - JACoW CP - Geneva, Switzerland SP - 3638 EP - 3642 KW - cryomodule KW - controls KW - cavity KW - klystron KW - operation DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-THXB1 UR - http://jacow.org/ipac2015/papers/thxb1.pdf ER -