Title :
Relativistic BWO with electron beam pre-modulation
Author :
Gunin, A.V. ; Korovin, S.D. ; Kurkan, I.K. ; Pegel, I.V. ; Rostov, V.V. ; Totmeninov, E.M.
Author_Institution :
Inst. of High-Current Electron., Acad. of Sci., Tomsk, Russia
Abstract :
The paper presents the results from theoretical and experimental studies of a backward wave oscillator with a resonant reflector incorporated in electromagnetic system. The reflector serves simultaneously as a short modulating gap and this provides the selection of the TM01 operating mode among parasitic transversal modes in an extended approximately twice slow-wave structure. In course of the experiment 0.8 GW microwave power in the X-band was obtained with an efficiency of 25%. The electron beam pre-modulation and the extension of BWO transversal size allowed for increasing its efficiency in a low magnetic field. A periodically-pulsed regime for BWO operation with a 20% efficiency utilizing a DC magnet with a 0.6 T field was realized
Keywords :
backward wave oscillators; microwave generation; microwave oscillators; relativistic electron beam tubes; 0.6 T; 0.8 GW; DC magnet; TM01 mode; X-band; backward wave oscillator; efficiency; electron beam pre-modulation; parasitic transversal modes; resonant reflector; transversal size; Diffraction; Electrodynamics; Electromagnetic scattering; Electromagnetic waveguides; Electron beams; Magnetic fields; Neck; Optical reflection; Resonance; Resonant frequency;
Conference_Titel :
High-Power Particle Beams, 1998. BEAMS '98. Proceedings of the 12th International Conference on
Conference_Location :
Haifa
Print_ISBN :
0-7803-4287-9
DOI :
10.1109/BEAMS.1998.816985
