Design of a TE02 mode W-band third harmonic gyrotron

Author

Dimin Sun ; Guowu Ma ; Yihu Huang ; Hongbin Chen

Author_Institution

Inst. of Appl. Electron., Mianyang, China

fYear

2015

Firstpage

1

Lastpage

2

Abstract

The design of a W-band gyrotron operating at the third harmonic cyclotron frequency is presented. In order to tackle the mode competition problem, a cylindrical cavity with an iris structure is used. The gyrotron is designed to operate at the low loss, circular symmetric TE02 mode. When the gyrotron is driven by a 45 kV, 4 A electron beam with orbital-to-axial velocity ratio equal to 1.5, an output power of 25.7 kW at 94.8 GHz is predicted from PIC simulation, corresponding to an efficiency of 14.3%. The prototype tube has been constructed and the test is in progress.

Keywords

electron beams; gyrotrons; PIC simulation; W-band third harmonic gyrotron; circular symmetric TE02 mode; current 4 A; cylindrical cavity; efficiency 14.3 percent; electron beam; frequency 94.8 GHz; iris structure; mode competition problem; orbital-to-axial velocity ratio; power 25.7 kW; third harmonic cyclotron frequency; voltage 45 kV; Cavity resonators; Electron beams; Gyrotrons; Harmonic analysis; Iris; Magnetic fields; Power generation; gyrotron; harmonic; iris cavity; millimeter wave;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2015 IEEE International

Print_ISBN

978-1-4799-7109-1

Type

conf

DOI

10.1109/IVEC.2015.7223861

Filename

7223861