Broadband gyro-TWA with thermionic cusp gun: Simulations and comparison with experiment

Author

Whyte, Colin G. ; Young, Alan R. ; Rowlands, David H. ; Robertson, Craig W. ; Phelps, Alan D R ; He, Wenlong ; Cross, Adrian W. ; Ronald, Kevin

Author_Institution

Dept. of Phys., Strathclyde Univ., Glasgow

fYear

2008

fDate

22-24 April 2008

Firstpage

91

Lastpage

92

Abstract

The latest results of experimental investigations of an X-band gyro-TWA using a cusp gun and a helically corrugated interaction region are presented. Results will be presented from two experimental investigations, one using a 150 kV, 35 A beam from a cold field emission cusp gun and one with a 150 kV, 70 A beam from a thermionic cusp gun. Designs for a gridded thermionic cusp gun currently under construction will also be presented. Numerical investigations of the gyro-TWA have been completed and used to predict the saturated and small signal gain of several gyro-TWA devices. These predictions are compared with the experimental results obtained.

Keywords

electron guns; gyrotrons; microwave amplifiers; thermionic emission; travelling wave amplifiers; wideband amplifiers; X-band gyro-TWA; broadband gyro-TWA; cold field emission cusp gun; current 35 A; current 70 A; frequency 8 GHz to 12 GHz; helically corrugated interaction region; signal gain; thermionic cusp gun; voltage 150 kV; Dispersion; Electron beams; Equations; Frequency estimation; High power microwave generation; Magnetic fields; Microwave devices; Microwave generation; Power generation; Structural beams;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2008. IVEC 2008. IEEE International

Conference_Location

Monterey, CA

Print_ISBN

978-1-4244-1715-5

Type

conf

DOI

10.1109/IVELEC.2008.4556431

Filename

4556431