Title :
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
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;
Conference_Titel :
Electronics and Radiophysics of Ultra-High Frequencies, 1999. International University Conference Proceedings
Conference_Location :
St Petersburg
Print_ISBN :
5-7422-0083-8
DOI :
10.1109/UHF.1999.787900
