A W-band gyrotron traveling wave amplifier based on a cusp electron gun

Author

Donaldson, C.R. ; He, W. ; Zhang, L. ; Cross, A.W. ; McElhinny, P. ; Phelps, A.D.R. ; Ronald, K.

Author_Institution

Dept. of Phys., Univ. of Strathclyde, Glasgow, UK

fYear

2011

fDate

2-7 Oct. 2011

Firstpage

1

Lastpage

2

Abstract

A W-band gyrotron traveling wave amplifier (gyro-TWA) with helically corrugated waveguide and cusp electron gun is presented. The beam-wave interaction, based on the cyclotron resonance maser instability, is driven by a 40 keV, 1.5 A axis-encircling electron beam generated by the cusp electron gun. Numerical simulations predict a maximum output of 5-10 kW (CW) with a 3 dB frequency bandwidth of 90-100 GHz and a saturated gain of 40 dB. Linear analysis and numerical simulation of the performance characteristics of the amplifier will be presented as well as the latest experiment measurements.

Keywords

cyclotron masers; electron beams; electron guns; gyrotrons; helical waveguides; millimetre wave amplifiers; numerical analysis; travelling wave amplifiers; W-band gyrotron; axis-encircling electron beam; bandwidth 90 GHz to 100 GHz; beam wave interaction; current 1.5 A; cusp electron gun; cyclotron resonance maser instability; electron volt energy 40 keV; gain 40 dB; gyro-TWA; helically corrugated waveguide; linear analysis; numerical simulations; traveling wave amplifier; Broadband amplifiers; Couplers; Electron beams; Gain; Helium; Magnetic fields; Microwave amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on

Conference_Location

Houston, TX

ISSN

2162-2027

Print_ISBN

978-1-4577-0510-6

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/irmmw-THz.2011.6105091

Filename

6105091