Potential for increasing the power of free electron masers using novel 2D Bragg coaxial structures

Author

Cross, A.W. ; Ginzburg, N.S. ; He, W. ; Konoplev, L.V. ; Peskov, N.Yu. ; Phelps, A.D.R. ; Robb, G.R.M. ; Ronald, K. ; Sergeev, A.S. ; Whyte, C.G.

Author_Institution

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

fYear

2000

fDate

12-15 Sept. 2000

Firstpage

45

Lastpage

46

Abstract

In this work the first successful measurements of a 2D Bragg coaxial mirror are presented. The results of experimental study of 2D Bragg structures as well as the results obtained from numerical calculations show that two dimensional distributed feedback can be used to obtain single mode excitation in a large diameter coaxial cavity. A joint experiment at the University of Strathclyde currently under progress aims to achieve single mode operation in a 37 GHz free electron maser (FEM) when driven by an oversized electron beam of diameter in excess of 10 wavelengths.

Keywords

cavity resonators; feedback; free electron lasers; masers; mirrors; 2D Bragg coaxial mirror; 2D distributed feedback; 37 GHz; FEM power improvement; free electron masers; large diameter coaxial cavity; oversized electron beam; single mode excitation; Coaxial components; Conductors; Distributed feedback devices; Electron beams; Frequency; Masers; Microwave measurements; Mirrors; Numerical simulation; Physics;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2000. Conference Digest. 2000 25th International Conference on

Conference_Location

Beijing, China

Print_ISBN

0-7803-6513-5

Type

conf

DOI

10.1109/ICIMW.2000.892931

Filename

892931