Recent activities of ITER gyrotron development in QSTY. Oda, R. Ikeda, K. Takahashi, K. Kajiwara, T. Kobayashi, K. Sakamoto, S. Moriyama, C. Darbos and M. HendersonEPJ Web Conf., 149 (2017) 01002DOI: https://doi.org/10.1051/epjconf/201714901002