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TY - CPAPER AU - Passarelli, D. AU - Holzbauer, J.P. AU - Ristori, L. TI - Performance of the Tuner Mechanism for SSR1 Resonators During Fully Integrated Tests at Fermilab J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - In the framework of the Proton Improvement Plan-II (PIPII) at Fermilab, a cavity tuner was developed to control the frequency of 325 MHz spoke resonators (SSR1). The behavior of the tuner mechanism and compliance with technical specifications were investigated through a campaign of experimental tests in operating conditions in the spoke test cryostat (STC) and at room temperature. Figures of merit for the tuner such as tuning range, stiffness, components hysteresis and overall performance were measured and are reported in this paper. PB - JACoW CY - Geneva, Switzerland SP - 1252 EP - 1256 KW - cavity KW - controls KW - niobium KW - resonance KW - linac DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-THPB061 UR - http://srf2015.vrws.de/papers/thpb061.pdf ER -