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TY - CONF AU - Banerjee, N. AU - Hoffstaetter, G.H. AU - Liepe, M. AU - Quigley, P. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - Active Suppression of Microphonics Detuning in High QL Cavities J2 - Proc. of SRF2019, Dresden, Germany, 30 June-05 July 2019 CY - Dresden, Germany T2 - International Conference on RF Superconductivity T3 - 19 LA - english AB - Accelerators operating with low beam loading such as Energy Recovery Linacs (ERL) greatly benefit from using SRF cavities operated at high loaded quality factors, since it leads to lower RF power requirements. However, large microphonics detuning several times the operating bandwidth of the cavities severely limit the maximum accelerating fields which can be sustained in a stable manner. In this talk, I will describe an active microphonics control technique based on the narrow band Active noise Control (ANC) algorithm which we have used in CBETA, a multi-turn SRF ERL being commissioned at Cornell University. I will describe its stability and performance during beam operations of CBETA with consistent reduction of peak detuning by almost a factor of 2 on multiple cavities. PB - JACoW Publishing CP - Geneva, Switzerland SP - 776 EP - 780 KW - cavity KW - controls KW - linac KW - resonance KW - SRF DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-WETEB6 UR - http://jacow.org/srf2019/papers/weteb6.pdf ER -