Study of gain in C-band deflection cavities for a frequency-doubling magnicon amplifier

Author

Gold, Steven H. ; Sullivan, Carol A. ; Hafizi, Bahman ; Manheimer, Wallace M.

Author_Institution

US Naval Res. Lab., Washington, DC, USA

Volume

21

Issue

4

fYear

1993

fDate

8/1/1993 12:00:00 AM

Firstpage

383

Lastpage

387

Abstract

An experimental study of the gain between two half-wavelength, 5.7-GHz TM₁₁₀ mode pillbox cavities, separated by a quarter-wavelength drift space, and powered by a 170-A, 500-keV electron beam immersed in an 8.1-kG magnetic field is reported. These cavities constitute the first section of a planned multicavity deflection system, whose purpose is to spin up an electron beam to high transverse momentum (α≡υ⊥/υ_z⩾1) for injection into the output cavity of a frequency-doubling magnicon amplifier. A gain of ~15 dB was observed in the preferred circular polarization, at a frequency shift of approximately -0.18%, in the opposite circular polarization, at a frequency shift of approximately +0.06%. These results are in good agreement with theory

Keywords

beam handling equipment; microwave amplifiers; 170 A; 5.7 GHz; 500 keV; 8.1 kG; C-band deflection cavities; TM₁₁₀ mode pillbox cavities; circular polarization; electron beam; frequency shift; frequency-doubling magnicon amplifier; gain; half-wavelength; multicavity deflection system; output cavity; transverse momentum; Electron beams; Frequency; Gold; Klystrons; Magnetic fields; Microwave amplifiers; Physics; Plasma measurements; Polarization; Power amplifiers;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.234565

Filename

234565