Multi-GW relativistic backward wave oscillator with TM02 operating mode

Author

Rostov, V.V. ; Tsygankov, R.V. ; Gunin, A.V. ; Elchaninov, A.A. ; Ju, J.C. ; Li, W. ; Yang, H.W. ; Zhang, J.

Author_Institution

Inst. of High-Current Electron., Tomsk, Russia

fYear

2015

fDate

24-28 May 2015

Firstpage

1

Lastpage

1

Abstract

First version of relativistic BWO with TM₀₂ operating mode has been tested also in [1]. The cyclotron-resonance mode selection was used. In this case, because of requirement to the defined values of magnetic field and e-beam radius, the efficiency of oscillator was not very high (approximately 10%). Now, the different electrodynamic codes are available to optimize the geometry of Slow Wave Structure (SWS) and reflector for TM₀₂ mode with small re-emission to TM₀₁. Then other techniques of mode selection such as the e-beam pre-modulation near the reflector [2], sectioning of SWS and diffractive losses at the coaxial magnetically-insolated diode can be used. So, refusing the cyclotron-type discrimination of TM₀₁ mode, we studied approaches of mode selection with higher magnetic field to increase the BWO efficiency, including the idea of self-modulated e-beam emission [3].

Keywords

backward wave oscillators; cyclotron resonance; electron beams; electron emission; magnetic fields; slow wave structures; BWO; SWS; TM operating mode; coaxial magnetically-insolated diode; cyclotron-resonance mode selection; cyclotron-type discrimination; diffractive loss; e-beam premodulation; e-beam radius; electrodynamic code; magnetic field; multiGW relativistic backward wave oscillator; self-modulated e-beam emission; slow wave structure; Cathodes; Electrodynamics; Footwear; Geometry; Magnetic fields; Modulation; Oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Plasma Sciences (ICOPS), 2015 IEEE International Conference on

Conference_Location

Antalya

Type

conf

DOI

10.1109/PLASMA.2015.7179927

Filename

7179927