Initial tests of a 10 MW, 35 GHz phase-locked gyrotron oscillator driven by a pulseline accelerator

S. H. Gold, A. W. Fliflet, W. M. Black, D. A. Kirkpatrick, W. M. Manheimer

Research output: Contribution to conferencePaperpeer-review

Abstract

A 35-GHz gyroklystron experiment has been designed using a 1-MeV, 100-A, 55-ns electron beam from the VEBA pulseline accelerator. The 10-MW design uses two TE111 bunching cavities and a TE121 output cavity. A helix gun approach is used to generate an electron beam with a low velocity spread (<5%) at a design pitch ratio of approximately 0.75. The operation of the oscillator is described in detail. The locking signal is provided by a 20-kW Ka-band. magnetron and is used to drive a slotted cylindrical TE111 bunching cavity with a Q of approximately 200. The experiment has been fabricated and cold tested. In initial experimental operation, free-running oscillation at 35 GHz has been observed at about 5-MW output power. The TE112 mode of the bunching cavities has been observed to oscillate early in the pulse, but generally not during the voltage flattop, so that it should not interfere with the phase-locking process.

Original languageEnglish (US)
Number of pages1
StatePublished - Dec 1 1989
Externally publishedYes
EventIEEE International Conference on Plasma Science 1989 - Buffalo, NY, USA
Duration: May 22 1989May 24 1989

Conference

ConferenceIEEE International Conference on Plasma Science 1989
CityBuffalo, NY, USA
Period5/22/895/24/89

ASJC Scopus subject areas

  • Engineering(all)

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