A Study on 94 GHz Low-Voltage, Low-Current Gyrotron

Author

Niu Xinjian ; Lei Chaojun ; Liu Yinghui ; Li Hongfu

Author_Institution

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

Volume

60

Issue

11

fYear

2013

fDate

Nov. 2013

Firstpage

3907

Lastpage

3912

Abstract

A theoretical and experimental study on a 94 GHz low-voltage, low-current gyrotron is presented in this paper. In order to obtain stable radiation and make great use of the equipment in the lab, the TE_6,2 mode is selected as the operating mode of the desired gyrotron. The efficiency of the electron beam interaction with RF fields under different conditions has been calculated by a code, which is based on the self-consistent nonlinear theory for gyrotrons. The gyrotron is equipped with a single-stage depressed collector and a quasi-optical mode converter. Then, a gyrotron with optimized parameters has been designed, constructed, and tested. An output power of 23 kW is obtained at an accelerating beam voltage of 31.5 kV, a beam current of 1.8 A, and a collector depression voltage of 7.4 kV, corresponding to an overall efficiency of 53%.

Keywords

gyrotrons; low-power electronics; RF fields; TE_6,2 mode; current 1.8 A; electron beam interaction; frequency 64 GHz; low-current gyrotron; low-voltage gyrotron; power 23 kW; quasioptical mode converter; self-consistent nonlinear theory; single-stage depressed collector; stable radiation; voltage 31.5 kV; voltage 7.4 kV; Cavity resonators; Couplings; Electron beams; Equations; Gyrotrons; Mathematical model; Field pattern; gyrotron; low-current; low-voltage; operating mode; output power;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2013.2283036

Filename

6637122