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TY - CONF AU - Shipman, N.C. AU - Bastard, J. AU - Ben-Zvi, I. AU - Burt, G. AU - Castilla, A. AU - Coly, M.R. AU - Gerigk, F. AU - Jing, C.-J. AU - Kanareykin, A. AU - Kazakov, S. AU - Macpherson, A. AU - Nenasheva, E. AU - Stapley, N. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - A Ferroelectric Fast Reactive Tuner for Superconducting 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 - A prototype FerroElectric Fast Reactive Tuner (FE-FRT) for superconducting cavities has been developed, which allows the frequency to be controlled by application of a potential difference across a ferroelectric residing within the tuner. This technique has now become practically feasible due to the recent development of a new extremely low loss ferroelectric material. In a world first, CERN has tested the prototype FE-FRT with a superconducting cavity, and frequency tuning has been successfully demonstrated. This is a significant first step in the development of an entirely new class of tuner. These will allow electronic control of cavity frequencies, by a device operating at room temperature, within timescales that will allow active compensation of microphonics. For many applications this could eliminate the need to use over-coupled fundamental power couplers, thus significantly reducing RF amplifier power. PB - JACoW Publishing CP - Geneva, Switzerland SP - 781 EP - 788 KW - cavity KW - controls KW - linac KW - experiment KW - superconducting-cavity DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-WETEB7 UR - http://jacow.org/srf2019/papers/weteb7.pdf ER -