Relativistic klystron amplifier and its applications

Author

Serlin, V. ; Friedman, M. ; Lau, Y.Y. ; Krall, Jonathan

fYear

1990

fDate

21-23 May 1990

Firstpage

131

Abstract

Summary form only given. Amplifiers based on the relativistic klystron amplifier (RKA) mechanism are described in which the interaction between an intense relativistic electron beam (IREB) and a low-power external RF pulse results in the generation of coherent and phase stabilities. Parametric studies were performed on fully modulating annular IREBs with diameters of up to 13 cm, currents of 1-30 kA, voltages of 0.2-3.0 MV, durations of 10-300 ns, and diode impedances of 20-200 Ω. In a recent experiment a 13.2-cm-diameter annular IREB with a DC power of 8 GW and an impedance of 30 Ω was modulated by an external magnetron operating at 1.3 GHz and 0.5 MW power. The interaction of this modulated beam with an output structure generated a 3-GW RF pulse radiated into the atmosphere. A compact high-gradient accelerator powered by RKA has been built. Electrons were accelerated to 60 MeV in a 1-m-long structure, with a peak current of 200 A

Keywords

klystrons; microwave amplifiers; relativistic electron beam tubes; 0.2 to 3 MV; 1 to 30 kA; 1.3 GHz; 10 to 300 ns; 13 cm; 200 A; 3 GW; 60 MeV; 8 GW; DC power; RF pulse generation; diode impedances; electron acceleration; external magnetron modulation; high-gradient accelerator; intense relativistic electron beam; low-power external RF pulse; modulating annular IREBs; parametric studies; relativistic klystron amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Plasma Science, 1990. IEEE Conference Record - Abstracts., 1990 IEEE International Conference on

Conference_Location

Oakland, CA, USA

Type

conf

DOI

10.1109/PLASMA.1990.110628

Filename

5725903