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TY - CPAPER AU - Pischalnikov, Y.M. AU - Hartman, B. AU - Holzbauer, J.P. AU - Schappert, W. AU - Smith, S.J. AU - Yun, J.C. TI - Reliability of the LCLS II SRF Cavity Tuner J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - The SRF cavity tuner for LCLS II must work reliably for more than 20 years in a cryomodule environment. Tuner’s active components- electromechanical actuator and piezo-actuators must work reliably in an insulating vacuum environment at low temperature for the lifetime of the machine. Summary of the accelerated lifetime tests (ALT) of the electromechanical and piezo actuators inside cold/ insulated vacuum environment and irradiation hardness test (dose level up to 5*10⁸ Rad) of tuner components are presented. Methodology to design and build reliable SRF cavity tuner, based on “lessons learned” approach, are discussed. PB - JACoW CY - Geneva, Switzerland SP - 1267 EP - 1271 KW - radiation KW - vacuum KW - SRF KW - operation KW - cavity DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-THPB065 UR - http://srf2015.vrws.de/papers/thpb065.pdf ER -