The Design and Simulation of a W-band Gyro-BWO

Author

He, Wenlong ; Phelps, A.D.R. ; Donaldson, C.R. ; Cross, A.W. ; Ronald, K.

Author_Institution

Univ. of Strathclyde, Glasgow

fYear

2007

fDate

15-17 May 2007

Firstpage

1

Lastpage

2

Abstract

This paper presents the design and simulation of a W-band gyrotron backward wave oscillator (Gyro-BWO) with a helically corrugated waveguide as the beam-wave interaction region and a cusp gun as the electron beam source. The electron beam system and the beam-wave interaction were optimized through numerical simulations for optimized output power and frequency bandwidth. A 3 dB bandwidth of ~ 84-104 GHz and output power ~10 kW were achieved using a 40 kV, 1.5 A, pitch alpha 1.6 axis-encircling electron beam from the cusp gun. Furthermore, the W-band helically corrugated interaction region was manufactured with dispersion from 76 GHz to 11 GHz measured in good agreement with simulations and theory.

Keywords

backward wave oscillators; gyrotrons; numerical analysis; W-band gyrotron backward wave oscillator; beam-wave interaction region; current 1.5 A; cusp gun; electron beam source; electron beam system; frequency 76 GHz to 110 GHz; helically corrugated waveguide; numerical simulations; voltage 40 kV; w-band gyro-BWO; Bandwidth; Cyclotrons; Dispersion; Electromagnetic waveguides; Electron beams; Frequency; Magnetic field measurement; Magnetic resonance; Physics; Power generation; gyro-BWO; gyro-TWA; gyro-device; gyrotron; helically corrugated waveguide; high power microwave;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2007. IVEC '07. IEEE International

Conference_Location

Kitakyushu

Print_ISBN

1-4244-0633-1

Type

conf

DOI

10.1109/IVELEC.2007.4283301

Filename

4283301