Miyamoto, A. Hara, H. Kanaoka, K. Okihira, K. Sennyu, K. Yanagisawa, T. JACoW Geneva, Switzerland 978-3-95450-178-6 10.18429/JACoW-SRF2015-THPB029 English 1141-1145 THPB029 cavity superconducting-RF electron gun SRF Contribution to a conference proceedings 2015 2015-12 http://dx.doi.org/10.18429/JACoW-SRF2015-THPB029 http://srf2015.vrws.de/papers/thpb029.pdf Mitsubishi Heavy Industries (MHI) have developed manufacturing process of superconducting cavities for a long time. In this presentation, recent progress will be reported.