A Self-Consistent Linear Theory of Gyrotrons

Kenichi HAYASHI  Tohru SUGAWARA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E75-C   No.5   pp.610-616
Publication Date: 1992/05/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Microwave and Millimeter Wave Technology
Keyword: 
electron tube,  gyrotron,  linear theory,  frequency detuning,  starting current,  open cavity,  whispering-gallery mode,  weakly irregular waveguide theory,  

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Summary: 
A new set of self-consistent linear equations is presented for the analysis of the startup characteristics of gyrotron oscillators with an open cavity consisting of weakly irregular waveguides. Numerical results on frequency detuning and oscillation starting current for a whispering-gallery-mode gyrotron are described in which these equations were utilized. Experiments for making a check on the effectiveness of the derived equations showed that they well express the operation of gyrotrons in comparison with the linear theory using an empty cavity field as the wave field.