Bertucci, M. Bignami, A. Bosotti, A. Chen, J.F. Michelato, P. Monaco, L. Pagani, C. Paparella, R. Pirani, S. Sertore, D. JACoW Geneva, Switzerland 978-3-95450-191-5 10.18429/JACoW-SRF2017-TUPB046 English 484-488 TUPB046 ion cavity radiation niobium electron Contribution to a conference proceedings 2018 2018-01 https://doi.org/10.18429/JACoW-SRF2017-TUPB046 http://jacow.org/srf2017/papers/tupb046.pdf INFN-LASA built a complete Medium Beta cavity, based on the ESS prototype design, with novel large-grain material sliced in sheets from an ingot provided by CBMM manufacturing experience. Design and fabrication are reported as well as results on the physical and chemical analyses performed on samples at different cavity production stages. Results from the cold tests performed are also summarized and critically discussed in view of future R&D activities