A model of injection-locked relativistic klystron oscillator

Author

Luginsland, John W. ; Lau, Y.Y. ; Hendricks, Kyle J. ; Coleman, P.D.

Author_Institution

Dept. of Nucl. Eng., Michigan Univ., Ann Arbor, MI, USA

Volume

24

Issue

3

fYear

1996

fDate

6/1/1996 12:00:00 AM

Firstpage

935

Lastpage

937

Abstract

By the use of a simple model, we explicitly incorporate the coupling between the driver cavity and the booster cavity in a relativistic klystron amplifier (RKA). We show that this RKA configuration may turn into an injection-locked oscillator only when the beam current is sufficiently high. Other features revealed by this model include: the downshifted frequency mode (“0” mode) is unstable whereas the upshifted frequency mode (“π” mode) is stable; the growth rate of the “0” mode is relatively mild so that the oscillation can start only in an injection-locked mode; the oscillation does not require the presence of reflected electrons; and the separation of the cavities must be sufficiently short. These, and other features, are found to be in qualitative agreement with the recent experiments on the injection-locked relativistic klystron oscillator (RKO) that were conducted at Phillips Laboratory

Keywords

injection locked oscillators; klystrons; microwave oscillators; relativistic electron beam tubes; booster cavity; downshifted frequency mode; driver cavity; injection-locked oscillator; injection-locked relativistic klystron oscillator; model; upshifted frequency mode; Driver circuits; Electrons; Frequency; Geometry; Injection-locked oscillators; Intensity modulation; Klystrons; Laboratories; Optical modulation; Voltage;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.533098

Filename

533098