title: High-efficiency single-mode free-electron maser oscillator based on a bragg resonator with step of phase of corrugation
abstract: A new type of high-selective Bragg resonator having a step of corrugation inside the interaction region was used as a microwave system for a free-electron maser (FEM). Using a LINAC LIU-3000 (1 MeV/200 A/200 ns) to drive the FEM oscillator, a single-mode single-frequency operation was achieved at a frequency of 30.74 GHz with an output power of about 50 MW, which corresponded to a record efficiency of 35% for a millimeter wavelength FEM.
authors.affiliation: Institute of Applied Physics RAS, Nizhny Novgorod, Russia.
authors.initials: NS
authors.lastname: Ginzburg
authors.initials: AA
authors.lastname: Kaminsky
authors.initials: AK
authors.lastname: Kaminsky
authors.initials: NY
authors.lastname: Peskov
authors.initials: SN
authors.lastname: Sedykh
authors.initials: AP
authors.lastname: Sergeev
authors.initials: AS
authors.lastname: Sergeev