Control of the Operation Mode of a Relativistic Ka-Band Backward-Wave Oscillator

Author

Boltachev, Grey Sh ; Rostov, Vladislav V. ; Sharypov, Konstantin A. ; Shunailov, Sergei A. ; Shpak, Valery G. ; Ul´maskulov, Marat R. ; Yalandin, Michael I.

Author_Institution

Inst. of Electrophys., Yekaterinburg, Russia

Volume

43

Issue

8

fYear

2015

fDate

Aug. 2015

Firstpage

2613

Lastpage

2620

Abstract

Variations in the transient time and in the microwave pulse duration and peak power have been demonstrated for a relativistic subgigawatt Ka -band backward-wave oscillator (BWO) with the slow-wave structure geometry, the accelerating voltage, and the electron beam current remained unchanged. This was done taking into account that the BWO operation mode depends on the starting-current-to-beam-current ratio. Efficient variation of the starting current was attained by changing the beam path in view of a significant difference between the times of the guide pulsed magnetic field diffusion into the electron injection region and beam-wave interaction space.

Keywords

backward wave oscillators; microwave generation; relativistic electron beams; Ka-band backward wave oscillator; beam-wave interaction; electron beam current; guide pulsed magnetic field diffusion; microwave pulse duration; operation mode control; peak power; relativistic backward wave oscillator; slow wave structure; subgigawatt backward wave oscillator; Electron beams; Electron tubes; Magnetomechanical effects; Microwave measurement; Microwave oscillators; Solenoids; Electron beam path; magnetic field diffusion; pulsed solenoid; starting current; synchronization; synchronization.;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2015.2446502

Filename

7151845