Development of gyrotron traveling-wave tubes at IAP and GYCOM S.V. Samsonov, G.G. Denisov, I.G. Gachev, A.A. Bogdashov, S.V. Mishakin, V.N. Manuilov, V.I. Belousov, D.I. Sobolev, E.V. Sokolov, E.A. Soluyanova and E.M. Tai EPJ Web Conf., 149 (2017) 04002 Published online: 04 August 2017 DOI: 10.1051/epjconf/201714904002