Development of 1-MW long-pulse/CW gyrotrons in 110-170 GHz frequency range

Author

Myasnikov, V.E. ; Agapova, M.V. ; Nichiporenko, V.O. ; Popov, L.G. ; Usachev, S.V. ; Iljin, V.N. ; Khmara, V.A. ; Litvak, A.G. ; Denisov, G.G. ; Zapevalov, V.E. ; Flyagin, V.A. ; Fix, A. Sh ; Alikaev, V.V. ; Iljin, V.I.

Author_Institution

GYCOM M Ltd., Moscow, Russia

fYear

1999

fDate

36373

Firstpage

138

Lastpage

141

Abstract

The given paper represents the review of modern experimental results, design features and perspectives of “GYCOM” gyrotrons further development. 140 GHz and 110 GHz “GYCOM” gyrotrons are used as sources of electron cyclotron resonance heating (ECRH) of plasma on W7-AX stellarator, ASDEX upgrade tokamak (both IPP, Germany), DIII-D tokamak (General atomic, USA), TdeV tokamak (CCFM, Canada). 110-GHz gyrotrons are characterized with the power levels of ~900 kW for 2-s pulse length and 500 kW for 5-s pulse length. In 140-GHz gyrotron power levels of ~900 kW for 1-s pulse length, ~50 kW in 2-s pulses and ~550 kW 3-s pulses are available. In the first 170 GHz gyrotron experimental sample, developed for the ITER project, the power of 1 MW for 1-s pulse length and 500 kW in 5-s pulses was reached. At the same time, gyrotrons with 1 MIN output power and 50% efficiency in a CW regime should be developed according to request of lTER and programs of modernization for existing installations

Keywords

gyrotrons; plasma radiofrequency heating; 1 to 5 s; 110 to 170 GHz; 500 kW to 1 MW; ASDEX upgrade tokamak; CW gyrotron; DIII-D tokamak; GYCOM gyrotron; ITER; TdeV tokamak; W7-AX stellarator; electron cyclotron resonance heating; long-pulse gyrotron; plasma diagnostics; Cathodes; Electron beams; Frequency; Gyrotrons; Heating; Power generation; Pulse measurements; Stability; Temperature; Tokamaks;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Radiophysics of Ultra-High Frequencies, 1999. International University Conference Proceedings

Conference_Location

St Petersburg

Print_ISBN

5-7422-0083-8

Type

conf

DOI

10.1109/UHF.1999.787900

Filename

787900