Analysis of a 0.6-THz Second Harmonic Gyrotron With Gradually Tapered Cavity

Author

Chaojun Lei ; Sheng Yu ; Hongfu Li ; Xinjian Niu ; Qixiang Zhao ; Yusheng Zhao ; Jiansheng Wang

Author_Institution

Chinese People´s Armed Police Force Acad., Langfang, China

Volume

42

Issue

2

fYear

2014

fDate

Feb. 2014

Firstpage

293

Lastpage

299

Abstract

The mode competition and beam wave interaction in a gradually tapered cavity are studied for achieving high efficiency of a 0.6-THz second harmonic (SH) gyrotron. In order to obtain high power and stable radiation, the TE32,5 mode is selected as the operating mode of the desired gyrotron to realize a single-mode oscillation. The issues of studying the high-order mode gyrotron are solved effectively by transforming the generalized telegraphist´s equations. The efficiency and the output power of the gyrotron under different conditions have been calculated by the code, which is based on the transformed equations. The results show that a single-mode SH radiation with a power of over 100 kW at frequency of 0.6 THz could be achieved.

Keywords

gyrotrons; submillimetre wave oscillators; submillimetre wave tubes; SH gyrotron; TE_32,5 mode; beam wave interaction; frequency 0.6 THz; generalized telegraphist equation; gradually tapered cavity; high-order mode gyrotron; second harmonic gyrotron analysis; single-mode SH radiation; single-mode oscillation; Cavity resonators; Couplings; Electron beams; Equations; Gyrotrons; Manganese; Power generation; Gyrotron; harmonic; high-order mode; taper;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2013.2295654

Filename

6719566