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TY - CPAPER AU - Reece, C.E. AU - Marhauser, F. AU - Palczewski, A.D. TI - The Transfer of Improved Cavity Processing Protocols to Industry for LCLS-II: N-Doping and Electropolishing J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - Based on the R&D efforts of colleagues at FNAL, Cornell, and JLab, the LCLS-II project adopted a modification to the rather standard niobium SRF cavity surface processing protocol that incorporates a high temperature diffusion doping with nitrogen gas. This change was motivated by the resulting higher Q0 and the prospect of significantly lower cryogenic heat load for LCLS-II. JLab is responsible for managing the cavity procurement for the LCLS-II project. The first phase of the procurement action is to transfer the nitrogen-doping protocol to the industrial vendors. We also seek to exploit improvements in understanding of the niobium electropolishing process as part of the production processing of the TESLA-style LCLS-II cavities. We report on the technology transfer activities and progress toward the envisaged performance demonstration of vendor-processed cavities. PB - JACoW CY - Geneva, Switzerland SP - 418 EP - 422 KW - cavity KW - cathode KW - niobium KW - controls KW - superconductivity DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-MOPB110 UR - http://srf2015.vrws.de/papers/mopb110.pdf ER -