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TY - CONF AU - Keikha, M. AU - Fong, K. AU - Moallem, M. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - Microphonics Noise Suppression with Observer Based Feedback 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 - Detuning of superconducting radio frequency (SRF) cavities is mainly caused by the Lorentz force, which is the radiation pressure induced by a high radio frequency (RF) field, and environmental mechanical vibrations that induce undesirable interference signals referred to as microphonics. Both of these influences can be described by a second order differential equation of the mechanical vibration modes of the cavity. In this paper we consider three dominant mechanical modes of the system and develop a control scheme based on input-output linearization. It is shown through simulation studies that the proposed control technique can successfully the suppress microphonic noise due to the SRF cavity¿s dynamics. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1068 EP - 1072 DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-THP074 UR - http://jacow.org/srf2019/papers/thp074.pdf ER -