Title :
Regions of stability of high-power gyrotron oscillators
Author :
Saraph, Girish P. ; Antonsen, Thomas M., Jr. ; Levush, B. ; Lin, G.I.
Author_Institution :
Lab. of Plasma Res., Maryland Univ., College Park, MD, USA
fDate :
6/1/1992 12:00:00 AM
Abstract :
The problem of mode competition in a high-power gyrotron oscillator is considered. The regions of parameter space in which a preexisting large-amplitude mode is able to suppress competing satellites are determined for cases in which the coupling coefficients and cavity quality factors for the operating and satellite modes are different. In addition, the effect of beam quality on the regimes of stable single-mode operation is investigated. Generally speaking, the requirement of stable operation favors devices whose interaction length measured by the parameter μ is not too large. It is found that for μ near 10 the operation is relatively stable and μ near 17 is not
Keywords :
gyrotrons; microwave oscillators; stability; beam quality; cavity quality factors; coupling coefficients; high-power gyrotron oscillators; interaction length; large-amplitude mode; mode competition; model; satellite mode competition; stability regions; stable single-mode operation; Electric breakdown; Frequency; Gyrotrons; Helium; Length measurement; Nearest neighbor searches; Oscillators; Q factor; Satellites; Stability;
Journal_Title :
Plasma Science, IEEE Transactions on
