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TY - CONF AU - Bychanok, D. AU - Butenko, A.V. AU - Gurnevich, E.A. AU - Gusarova, M. AU - Huseu, S. AU - Lalayan, M.V. AU - Maksimenko, S.A. AU - Polozov, S.M. AU - Syresin, E. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - Frequency Tuning System Based on Mobile Plungers For Superconductive Coaxial Half Wave Resonators 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 - The design of a prototype of the frequency tuning system (FTS) for superconductive coaxial half wave cavities (HWR) [1] developed for the Nuclotron-based Ion Collider fAcility (NICA) injector is presented. The proposed system is based on mobile plungers placed in the technological holes in the end caps of the resonator. The FTS allows controlling the penetration depth of plungers, which is monotonically related to the resonant frequency shift of the cavity. The developed FTS includes slow/fast tuner parts and is more compact and simple in comparison to traditional mechanical systems, which deform reversibly the HWR by applying an effort on the beam ports [2]. The similar plunger-based tuner design was considered for QWR cavities in [3]. The results of numerical simulations of the resonant frequency for a wide range of plunger parameters are presented and discussed. The most important parameters for effective frequency shift are estimated. PB - JACoW Publishing CP - Geneva, Switzerland SP - 664 EP - 666 KW - cavity KW - simulation KW - linac KW - SRF KW - vacuum DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-TUP086 UR - http://jacow.org/srf2019/papers/tup086.pdf ER -