Title :
Free electron maser experiments based on a coaxial 2D Bragg cavity
Author :
Konoplev, I.V. ; McGrane, P. ; Ronald, K. ; Cross, A.W. ; He, W. ; Whyte, C.G. ; Phelps, A.D.R. ; Robertson, C.W. ; Speirs, D.C. ; Ginzburg, N.S. ; Peskov, N. Yu ; Sergeev, A.S. ; Thumm, M.
Author_Institution :
Dept. of Phys., Strathclyde Univ., Glasgow, UK
fDate :
27 Sept.-1 Oct. 2004
Abstract :
The generation of high power microwave radiation from a two-dimensional (2D) Bragg co-axial free electron maser (FEM) is reported. Two 2D Bragg structures positioned at the input and output of an oversized coaxial interaction region were used to define the cavity of the FEM. Measurements of the transmission coefficient of the 2D Bragg structures were conducted with experimental results compared with theoretical predictions. A 1 kA, 475 kV annular electron beam of a diameter of 7 cm was measured. The frequency of the microwave radiation generated, was measured to lie within the reflection zone of the 2D Bragg cavity.
Keywords :
coaxial waveguides; distributed Bragg reflector lasers; electron beams; laser cavity resonators; masers; millimetre wave generation; millimetre wave lasers; 1 kA; 2D Bragg structures; 475 kV; 7 cm; annular electron beam; coaxial 2D Bragg cavity; coaxial interaction region; free electron maser experiments; high power microwave radiation generation; reflection zone; transmission coefficient measurement; two dimensional coaxial free electron maser; Capacitors; Coaxial components; Distributed feedback devices; Electron beams; Frequency; Masers; Optical pulse generation; Pulsed power supplies; Switches; Undulators;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422217
