Computer simulation of a high‐power dielectric Čerenkov maser amplifier

A computer simulation is used to study the growth and saturation of the electromagnetic wave in a dielectric Čerenkov amplifier. The calculation is done in a reference frame moving with the wave, which reduces the field solution to an inversion of Poisson’s equation in two dimensions; it includes se...

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Bibliographic Details
Published in:Physics of fluids. B, Plasma physics Plasma physics, 1992-07, Vol.4 (7), p.1953-1965
Main Authors: Weatherall, James C., Main, William
Format: Article
Language:English
Subjects:
Applied sciences
Electronic tubes, masers
Electronics
Exact sciences and technology
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Summary:A computer simulation is used to study the growth and saturation of the electromagnetic wave in a dielectric Čerenkov amplifier. The calculation is done in a reference frame moving with the wave, which reduces the field solution to an inversion of Poisson’s equation in two dimensions; it includes self‐consistently the evolution of space charge in the electron beam. The simulations are used to study a high‐power X‐band amplifier in high‐current and low‐current operating regimes. Comparison is made with experiment. The simulations identify operating parameters, frequency bandwidths, saturation lengths, saturation powers, and electromagnetic stresses on the dielectric.
ISSN:0899-8221
2163-503X
DOI:10.1063/1.860048