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DOI: 10.1109/TPS.2003.808885
Zitationen: 13
Web of Science
Zitationen: 9

Advanced high-power gyrotrons

Kuntze, M.; Alberti, S.; Dammertz, G.; Giguet, E.; Illy, S.; Heidinger, R.; Koppenburg, K.; Le Cloarec, G.; Le Goff, Y.; Leonhardt, W.; Piosczyk, B.; Schmid, M.; Thumm, Manfred; Tran, M. Q.

Gyrotrons at high frequency with high output power are mainly developed for microwave heating and current drive in plasmas for thermonuclear fusion. For the stellarator Wendelstein 7-X now under construction at IPP Greifswald, Germany, a 10 MW ECRH system is foreseen. A 1 MW, 140 GHz gyrotron with synthetic diamond window for continuous wave operation and with a single stage depressed collector for energy recovery and improvement of efficiency has been designed, constructed and tested in collaboration with TED Vélizy. It operates in the TE28,8 cavity mode and provides a linearly polarized TEM0,0 Gaussian RF beam. In short pulse operation at the design current of 40 A, an output power of 1 MW could be achieved for an accelerating voltage of 82 kV without depression voltage, an output power of 1.15 MW at an accelerating voltage of 84 kV with a depression voltage of 25 kV. These values correspond to an efficiency of 49%. After some problems with the RF-load, long pulse operation was performed. The power measurements were done by the calibrated signal of the diode detector placed at the second mirror. Output powers of 1 MW could be achi ... mehr

Zugehörige Institution(en) am KIT Institut für Materialforschung (IMF)
Institut für Höchstfrequenztechnik und Elektronik (IHE)
Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Publikationstyp Zeitschriftenaufsatz
Jahr 2003
Sprache Deutsch
Identifikator ISSN: 0093-3813, 1939-9375
KITopen ID: 1000001314
HGF-Programm 31.04.03; LK 01
Erschienen in IEEE transactions on plasma science
Band 31
Heft 1
Seiten 25-31
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