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TY - CONF AU - Furuta, F. AU - Chouhan, V. AU - Ge, M. AU - Gruber, T. AU - Hayano, H. AU - Ida, Y.I. AU - Kato, S. AU - Kaufman, J.J. AU - Liepe, M. AU - Nii, K.N. AU - Saeki, T. AU - Sears, J. AU - Yamaguchi, T.Y. ED - Schaa, Volker RW ED - He, Yuan ED - Li, Lu ED - Zhao, Ning TI - Vertical Electro-polishing Collaboration Between Cornell, KEK, and Marui Galvanizing Co. Ltd J2 - Proc. of SRF2017, Lanzhou, China, July 17-21, 2017 C1 - Lanzhou, China T2 - International Conference on RF Superconductivity T3 - 18 LA - english AB - Cornell's SRF group, KEK, and Marui Galvanizing Co. Ltd (MGI) have collaborated since 2014 on Vertical Electro-Polishing (VEP) R&D as a part of a US/Japan Program for Cooperation in High Energy Physics. We have focused on an improvement of removal uniformity during the VEP process. MGI and KEK have developed their original VEP cathode named i-cathode Ninja®, which has four retractable wing-shape parts per cell. Cornell processed one single cell cavity with VEP using this cathode and performed a vertical test. KEK also provided one 9-cell cavity to Cornell. Cornell then performed surface treatments including Cornell VEP and RF test on this 9-cell cavity. The progress by the VEP collaboration and RF test results are presented in this paper. PB - JACoW CP - Geneva, Switzerland SP - 563 EP - 566 KW - cathode KW - cavity KW - ion KW - SRF KW - linac DA - 2018/01 PY - 2018 SN - 978-3-95450-191-5 DO - 10.18429/JACoW-SRF2017-TUPB073 UR - http://jacow.org/srf2017/papers/tupb073.pdf ER -