Design of a Novel MIG for a 140-GHz 2-kW Confocal Gyrotron Traveling-Wave Tube

Author

Kun Dong ; Yong Luo ; Hao Li ; Shafei Wang

Author_Institution

Sch. of Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

62

Issue

11

fYear

2015

Firstpage

3832

Lastpage

3836

Abstract

In order to enhance the efficiency of confocal gyrotron traveling-wave tubes (gyro-TWTs), this paper is intended to present a novel triode-type magnetron injection gun for a 140-GHz 2-kW confocal gyro-TWT. This novel gun, which has a pair of sectorial emitters, is expected to obtain an axial velocity spread of 7.83% and a velocity ratio of 1.01 with an anode voltage of 35 kV and a beam current of 2.4 A. The design procedure has been given in detail. Computer simulations have been carried out using 3-D electromagnetic code computer simulation technology particle tracing. The sensitivity analysis has been performed to study the parametric dependence of modulating anode voltage, accelerating anode voltage, and cathode magnetic field on beam qualities. Results show that this novel gun can be operated stably within a certain parametric scope.

Keywords

cathodes; gyrotrons; magnetrons; millimetre wave tubes; sensitivity analysis; travelling wave tubes; 3-D electromagnetic code computer simulation technology particle tracing; MIG; anode voltage; axial velocity spread; cathode magnetic field; confocal gyroTWT; confocal gyrotron traveling-wave tube; current 2.4 A; frequency 140 GHz; power 2 kW; sensitivity analysis; triode-type magnetron injection gun; voltage 35 kV; Cathodes; Electron beams; Electron tubes; Gyrotrons; Plasmas; Trajectory; Arc-like beam; computer simulation technology particle tracing (CST-PS); confocal gyrotron traveling-wave tube (gyro-TWT); magnetron injection gun (MIG); sectorial emitter; sectorial emitter.;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2015.2477356

Filename

7274719