Self-consistent simulation of cyclotron autoresonance maser amplifiers

Author

Pendergast ; Danley, B.G. ; Temkin, Richard J. ; Wurtele, J.S.

Author_Institution

Plasma Fusion Center, MIT, Cambridge, MA, USA

Volume

16

Issue

2

fYear

1988

fDate

4/1/1988 12:00:00 AM

Firstpage

122

Lastpage

128

Abstract

A self-consistent, one-dimensional model of the cyclotron autoresonance maser (CARM) amplifier is developed, and numerical simulations based on this model are described. Detailed study results of the CARM gain and efficiency for a wide range of initial energy and velocity spreads are presented. The interaction efficiency is found to be substantially increased when the axial magnetic field is tapered. Efficiencies of greater than 41% are obtained for a 140-GHz CARM amplifier with a tapered axial magnetic field and a 700-kV 4.5-A electron beam with parallel velocity spreads of less than 1%. A discussion of the nonlinear bandwidth and interaction sensitivity to axial-field inhomogeneities is presented

Keywords

masers; 140 GHz; 4.5 A; 700 kV; axial magnetic field inhomogeneities; cyclotron autoresonance maser amplifiers; efficiency; energy spread; gain; interaction sensitivity; nonlinear bandwidth; numerical simulations; self-consistent, one-dimensional model; velocity spread; Bandwidth; Cyclotrons; Electron beams; Frequency; Gyrotrons; Magnetic fields; Masers; Numerical simulation; Oscillators; Resonance;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.3803

Filename

3803