PT Unknown AU Jin, J Gantenbein, G Jelonnek, J Thumm, M Alberti, S Hogge, J Silva, M Goodman, T TI Quasi-optical mode converter for 1MW dual-frequency gyrotrons SE 18th International Vacuum Electronics Conference (IVEC), London, April 24–26, 2017 PY 2017 BP 1 EP 2 DI 10.1109/IVEC.2017.8289609 LA english ER