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TY - CPAPER AU - Steinhau-Kühl, N. AU - Bandelmann, R. AU - Kostin, D. AU - Matheisen, A. AU - Schmökel, M. AU - Sekutowicz, J.K. TI - Vertical Electro-Polishing at DESY of a 1.3 GHz Gun Cavity for CW Application J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - Superconducting gun cavities for cw operation in accelerators are under study. In 2003 a three-and-a-half cell gun cavity was chemically treated with buffered chemical polishing and tested successfully in a collaboration between Helmholtz-Zentrum Dresden-Rossendorf and DESY. For several years a 1.3-GHz 1.6-cell resonator has been under study, which has been built and tested at DESY and elsewhere. For further studies and optimization the gun cavity needed to be electro-polished, which was conducted at DESY for the first time using vertical electro-polishing. The technical set-up for the vertical electro-polishing and high pressure rinsing as well as the processing parameters applied and the adaptation of the existing infrastructure to the 1.6-cell geometry at DESY are presented. PB - JACoW CY - Geneva, Switzerland SP - 399 EP - 403 KW - cavity KW - gun KW - acceleration KW - injection KW - SRF DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-MOPB103 UR - http://srf2015.vrws.de/papers/mopb103.pdf ER -