Title :
2.2 MW, 165 GHz coaxial cavity gyrotron
Author :
Piosczyk, B. ; Arnold, A. ; Dammertz, G. ; Dumbrajs, O. ; Muntze, M. ; Leonhardt, W. ; Pavelyev, A.B. ; Schmid, M. ; Thumm, M.
Author_Institution :
Forschungszentrum Karlsruhe, Inst. fur Hochleistungsimpuls- und Mikrowellentech., Germany
Abstract :
Measurements on a coaxial gyrotron equipped with modified components have been performed. In experiments a maximum RF-output power of 2.2 MW with an output efficiency of 28% has been obtained. A maximum efficiency of 30% (48% with depressed collector) has been achieved at the nominal output power of 1.5 MW. The mechanical stability of the insert under operating conditions has been found to be within /spl plusmn/0.03 mm which is sufficiently low for stable long pulse operation. Parasitic low frequency oscillations have been identified to be generated either inside the mirror box (474/386 MHz) or in the cathode region (21/82 MHz).
Keywords :
cavity resonators; electromagnetic oscillations; gyrotrons; mechanical stability; millimetre wave tubes; 1.5 to 2.2 MW; 165 GHz; 21 to 474 MHz; 28 to 48 percent; cathode region; coaxial cavity gyrotron; coaxial insert; depressed collector; low frequency oscillations; maximum RF-output power; mechanical stability; mirror box; modified components; output efficiency; parasitic LF oscillations; stable long pulse operation; Coaxial components; Frequency; Gyrotrons; Mirrors; Performance evaluation; Physics; Pollution measurement; Power generation; Pulse measurements; Voltage;
Conference_Titel :
Infrared and Millimeter Waves, 2000. Conference Digest. 2000 25th International Conference on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-6513-5
DOI :
10.1109/ICIMW.2000.892919
