Experimental results from the MIT 140 GHz quasioptical gyro-TWT

Author

Sirigiri, J.R. ; Shapiro, M.A. ; Temkin, R.J.

Author_Institution

Plasma Sci. & Fusion Center, MIT, Cambridge, MA, USA

fYear

2002

fDate

26-26 Sept. 2002

Firstpage

235

Lastpage

236

Abstract

We present the latest experimental results from a novel 140 GHz quasioptical gyro-TWT at MIT. The gyro-TWT is designed to operate in a higher order HE/sub 06/ mode of a confocal waveguide to produce 100 kW at 140 GHz with a gain of 38 dB. Current experimental results have demonstrated a peak power of 30 kW at 140 GHz with a gain of 29 dB and an unsaturated 3 dB bandwidth of 2.0 GHz. The gyro-TWT interaction structure which is formed by a pair of confocal mirrors exhibits tremendous potential for high average power operation in the W-band and beyond.

Keywords

gyrotrons; millimetre wave tubes; mirrors; travelling wave tubes; 100 kW; 140 GHz; 2.0 GHz; 29 dB; 30 kW; 38 dB; W-band operation; average power; confocal mirror pair; confocal waveguide; gain; gyro-TWT design; gyro-TWT interaction structure; higher order HE/sub 06/ mode operation; peak power; quasioptical gyro-TWT; unsaturated bandwidth; Bandwidth; Broadband amplifiers; Diffraction; Electron beams; Gain; High power amplifiers; Klystrons; Linearity; Mirrors; Power amplifiers;

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.2002.1076171

Filename

1076171