Optimization of high power and high efficiency operation of 77GHz gyrotrons for ECRH in the large helical device (IRMMW-THz 2011 - 36th International Conference on Infrared, Millimeter, and Terahertz Waves, 2011)

(untitled) - Shimozuma, T; Takahashi, H; Ito, S; Kobayashi, S; Kubo, S; Yoshimura, Y; Igami, H; Nishiura, M; Ogasawara, S; Makino, R; Mizuno, Y; Okada, K; et al.