Electron beam-cavity system of 170 GHz gyrotron for ITER

Author

Zapevalov, V.E. ; Flyagin, V.A. ; Kuftin, A.N. ; Lygin, V.K. ; Moiseev, M.A. ; Zavolsky, N.A.

Author_Institution

Inst. of Appl. Phys., Acad. of Sci., Nizhny Novgorod, Russia

fYear

2000

fDate

12-15 Sept. 2000

Firstpage

25

Lastpage

26

Abstract

The opportunity of using TE/sub 28.7/, TE/sub 31.8/ and TE/sub 25.10/ operating modes for a CW 170 GHz/1 MW gyrotron for ITER is assessed. Parameters are optimized to achieve maximum efficiency of the gyrotron with an acceptable ohmic load on the cavity. Results of an experimental investigation of short pulse prototypes of the TE/sub 28.7/ and TE/sub 25.10/ gyrotrons are presented. Mauimum output power 1.4 MW, efficiency 36%, and 65% with single-stage depressed collector were achieved.

Keywords

cavity resonators; electron beams; gyrotrons; millimetre wave tubes; numerical analysis; plasma radiofrequency heating; 1 to 1.4 MW; 170 GHz; 36 percent; 65 percent; CW gyrotron; EHF; ITER application; ITER plasma set-ups; MM-wave tube; TE/sub 25.10/ mode; TE/sub 28.7/ mode; TE/sub 31.8/ mode; cavity numerical simulation; electron beam-cavity system; maximum efficiency; megawatt gyrotron; parameters optimization; short pulse prototypes; single-stage depressed collector; Cathodes; Electron beams; Frequency; Guns; Gyrotrons; Numerical simulation; Physics; Power generation; Prototypes; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2000. Conference Digest. 2000 25th International Conference on

Conference_Location

Beijing, China

Print_ISBN

0-7803-6513-5

Type

conf

DOI

10.1109/ICIMW.2000.892922

Filename

892922