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TY - CONF AU - Pischalnikov, Y.M. AU - Contreras-Martinez, C. AU - Yun, J.C. ED - Michel, Peter ED - Arnold, André ED - Schaa, Volker RW TI - Testing of the Piezo-actuators at High Dynamic Rate Operational Conditions 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 - Reliability of the piezo-actuators that deployed into SRF cavity tuner and operated at high dynamic rate operational conditions made significant impact on the overall performance of the SRF linacs. We tested at FNAL piezo-actuators P-P-844K075 that were developed at Physik Instrumente for LCLS II project. Even these actuators were developed for CW linac we tested them at high dynamic rate inside cryogenic/insulated vacuum environment. Results of the tests will be presented. Different modes of the piezo-actuators failure will be discussed. PB - JACoW Publishing CP - Geneva, Switzerland SP - 656 EP - 659 KW - SRF KW - cavity KW - operation KW - vacuum KW - linac DA - 2019/08 PY - 2019 SN - "" SN - 978-3-95450-211-0 DO - doi:10.18429/JACoW-SRF2019-TUP084 UR - http://jacow.org/srf2019/papers/tup084.pdf ER -