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Highly efficient long pulse operation of an advanced 140 GHz 0.5 MW gyrotron oscillator

Conference ·
OSTI ID:391207
; ;  [1]
  1. Institut fuer Hoechstfrequenztechnik und Elektronik, Karlsruhe (Germany); and others
A TE{sub 10,4} gyrotron oscillator with an advanced built in mode converter and a radial TEM{sub 0,0} output beam was operated with an output power of 0.6 MW at an efficiency of 27% in short pulse operation. The maximum efficiency of 32% (electronic efficiency of 38%) was measured at an output power of 0.5 MW. Long pulse operation up to 0.2 s has been performed. With a single stage depressed collector the efficiency was measured to be 51% at an output power of 460 kW. Irreversible frequency increase during long pulse operation has been observed.
OSTI ID:
391207
Report Number(s):
CONF-951240--
Country of Publication:
United States
Language:
English

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