Title :
Long-pulse operation of a 0.5 MW TE10.4 gyrotron at 140 GHz
Author :
Dammertz, Günter ; Brat, O. ; Iatrou, Christos T. ; Kuntze, M. ; Möbius, Arnold ; Piosczyk, Bernhard ; Thumm, Manfred
Author_Institution :
Inst. fur Tech. Phys., Forschungszentrum Karlsruhe, Germany
fDate :
6/1/1996 12:00:00 AM
Abstract :
The operation features of a TE10.4-mode gyrotron oscillator with a quasi-optical mode converter and a single-stage depressed collector at 140 GHz with an output power of 500 kW in long pulses of 0.2 s are presented. Measurements on long-pulse operation of the tube are described in detail, and the significant differences between short- and long-pulse operation concerning efficiency and output power are pointed out. The variation of frequency during a pulse and an irreversible frequency shift during long-pulse operation were measured and are discussed with respect to gyrotron design
Keywords :
gyrotrons; millimetre wave oscillators; millimetre wave tubes; 0.5 MW; 140 GHz; TE10.4-mode gyrotron oscillator; efficiency; gyrotron design; irreversible frequency shift; long-pulse operation; output power; quasi-optical mode converter; short-pulse operation; single-stage depressed collector; Electron beams; Frequency; Gyrotrons; Heating; Oscillators; Plasma diagnostics; Plasma stability; Plasma temperature; Power generation; Tellurium;
Journal_Title :
Plasma Science, IEEE Transactions on
