140-GHz gyrotron with multimegawatt output power

Author

Dammertz, G. ; Borie, Edith ; Iatrou, C.T. ; Kuntze, M. ; Piosczyk, Bernhard ; Thumm, Manfred K.

Author_Institution

Association EURATOM-Forschungszentrum, Forschungszentrum Karlsruhe, Germany

Volume

28

Issue

3

fYear

2000

fDate

6/1/2000 12:00:00 AM

Firstpage

561

Lastpage

566

Abstract

The operational features of a 140-GHz, transverse electric TE_22,6 mode gyrotron oscillator with an advanced quasi-optical mode converter, a Brewster window, and a single-stage depressed collector at 140 GHz with an output power of 2.1 MW and an efficiency of 34% without depressed collector and 53% with depressed collector are presented. The high output power level is possible due to an almost reflectionless termination of the radio frequency (RF) beam line outside the tube. The operation of the TE_22,6 mode gyrotron is described in detail, and the significant features for achieving the high-output power are pointed out

Keywords

gyrotrons; millimetre wave oscillators; 140 GHz; 2.1 MW; Brewster window; gyrotron; high output power level; high-output power; multimegawatt output power; operational features; quasi-optical mode converter; radio frequency beam line; reflectionless termination; single-stage depressed collector; transverse electric TE_22,6 mode gyrotron oscillator; Cyclotrons; Dielectric losses; Electrons; Gyrotrons; Heating; Plasma diagnostics; Power generation; Radio frequency; Resonance; Tellurium;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.887673

Filename

887673