High-peak power < e1 > K < /e1 > (a)-band gyrotron oscillator experiments with slotted and unslotted cavities

A < e1 > K < /e1 > (a)-band gyrotron oscillator powered by a compact pulseline accelerator has been operated using oscillator cavities with and without axial slots. The oscillator was operated at high voltage (~900 keV) and high current (~500 A) in the approximate frequency range of 20-5...

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Bibliographic Details
Published in:IEEE transactions on plasma science 1988-04, Vol.16 (2), p.142-148
Main Authors: Gold, S H, Fliflet, A W, Manheimer, W M, McCowan, R B, Lee, R C, Granatstein, V L, Hardesty, D L, Kinkead, A K, Sucy, M
Format: Article
Language:English
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Summary:A < e1 > K < /e1 > (a)-band gyrotron oscillator powered by a compact pulseline accelerator has been operated using oscillator cavities with and without axial slots. The oscillator was operated at high voltage (~900 keV) and high current (~500 A) in the approximate frequency range of 20-50 GHz. The use of axial slots has been shown to suppress low-starting-current whispering-gallery modes, in particular, modes of the TE(m2) type, allowing stable operation in a linearly polarized TE(13) mode. A peak power of 35 MW has been observed at 6% efficiency
ISSN:0093-3813
DOI:10.1109/27.3806