High performance, 70 kV third-harmonic smooth-bore gyroklystron amplifier

Author

McNally, J.D. ; McDermott, D.B. ; Wang, Q.S. ; Hartemann, F.V. ; Luhmann, N.C., Jr.

Author_Institution

Dept. of Appl. Sci., California Univ., Davis, CA, USA

Volume

22

Issue

5

fYear

1994

fDate

10/1/1994 12:00:00 AM

Firstpage

932

Lastpage

938

Abstract

The design of a 95 GHz third-harmonic smooth-bore gyroklystron amplifier utilizing an axis-encircling electron beam is presented. Using a self-consistent simulation code, a parameter search was performed to determine the optimum device characteristics for a gyroklystron operating in the circular TE₃₁ mode. For a 70 kV, 5 A electron beam with v_⊥/v_||=2 and Δv _z/v_z=10%, the three-cavity gyroklystron is predicted to yield 70 kW with 20% efficiency, 0.2% bandwidth, and a saturated gain of 32 dB. CW operation would yield a tolerable wall loading of 2 kW/cm²

Keywords

gyrotrons; klystrons; millimetre wave power amplifiers; 20 percent; 32 dB; 5 A; 70 kW; 95 GHz; CW operation; axis-encircling electron beam; circular TE₃₁ mode; optimum device characteristics; parameter search; saturated gain; self-consistent simulation code; third-harmonic smooth-bore gyroklystron amplifier; three-cavity gyroklystron; Cyclotrons; Electron beams; Gain; Klystrons; Linear accelerators; Magnetic fields; Millimeter wave circuits; Millimeter wave radar; Power amplifiers; Power generation;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.338310

Filename

338310