Recent Development Results in Russia of Megawatt Power Gyrotrons for Plasma Fusion InstallationsA.G. Litvak, G.G. Denisov, V.E. Myasnikov, E.M. Tai, E.V. Sokolov and V.I. IlinEPJ Web of Conferences, 32 (2012) 04003DOI: https://doi.org/10.1051/epjconf/20123204003