35 GHz third-harmonic gyrotron with a permanent magnet system

Author

Li Hongfu ; Xie Zhonglian ; Wang Wenxiang ; Luo Yong ; Du Pinzhong ; Den Xue ; Wang Huanjun ; Yu Sheng ; Niu Xinjian ; Wang Li ; Liu Shenggang

Author_Institution

Inst. of High Energy Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2002

fDate

26-26 Sept. 2002

Firstpage

301

Lastpage

302

Abstract

A systematic theoretical and experimental study on 35 GHz 45 kV third-harmonic gyrotron with a permanent magnet system is presented in this paper. A complex cavity with gradual transition, and a diode magnetron injection electron gun (MIG) are employed in the gyrotron. The permanent magnet system provided the axial magnetic field of about 4.5 kG in the cavity region. The Ka band third-harmonic gyrotron with a permanent magnet system has been designed, constructed and tested. A peak output power of 147.3 kW was obtained at a beam voltage of 45 kV with beam current of 32.2 A, corresponding to an efficiency of 10.2%.

Keywords

cavity resonators; electron guns; gyrotrons; millimetre wave tubes; permanent magnets; 10.2 percent; 147.3 kW; 32.2 A; 35 GHz; 4.5 kG; 45 kV; Ka band; axial magnetic field; beam voltage; diode magnetron injection electron gun; gradual transition complex cavity; peak output power; permanent magnet system; third-harmonic gyrotron; Diodes; Electron beams; Gyrotrons; Magnetic fields; Maxwell equations; Millimeter wave radar; Nonlinear equations; Permanent magnets; Structural beams; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2002. Conference Digest. Twenty Seventh International Conference on

Conference_Location

San Diego, CA, USA

Print_ISBN

0-7803-7423-1

Type

conf

DOI

10.1109/ICIMW.2002.1076204

Filename

1076204