The development of high frequency, megawatt gyrotrons for ITER

Author

Kreischer, K.E. ; Danly, B.G. ; Hogge, J.-P. ; Kimura, T. ; Temkin, R.J. ; Read, M.E.

Author_Institution

Plasma Fusion Center, MIT, Cambridge, MA, USA

fYear

1995

Firstpage

219

Lastpage

222

Abstract

The present focus of the MIT program is to demonstrate that efficient operation can be achieved with a gyrotron oscillator at power levels in excess of 1 MW and frequencies between 140 and 200 GHz. These are the operating parameters required for the International Thermonuclear Experimental Reactor (ITER) for plasma initiation, bulk heating, and current drive. Two major experiments are being conducted at MIT as part of this program: A 170 GHz, 1 MW gyrotron operating in the TE_28,8,1 mode using a conventional, tapered cavity, and a coaxial 140 GHz, 3 MW gyrotron oscillating in the TE_21,13,1 mode. This paper reviews design issues that were investigated during the construction of these experiments, and also presents results from initial operation of the coaxial gyrotron

Keywords

gyrotrons; millimetre wave oscillators; millimetre wave tubes; plasma radiofrequency heating; 1 MW; 140 to 200 GHz; 170 GHz; 3 MW; EHF; ITER; International Thermonuclear Experimental Reactor; MIT program; MM-wave tubes; TE_21,13,1 mode; TE_28,8,1 mode; bulk heating; coaxial gyrotron; current drive; gyrotron oscillator; megawatt gyrotrons; plasma initiation; tapered cavity; Boring; Coaxial components; Frequency; Gyrotrons; Heating; Magnetic fields; Oscillators; Plasmas; Tellurium; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices Meeting, 1995. IEDM '95., International

Conference_Location

Washington, DC

ISSN

0163-1918

Print_ISBN

0-7803-2700-4

Type

conf

DOI

10.1109/IEDM.1995.499182

Filename

499182