Title :
A high power 390 GHz harmonic gyrotron based on cusp electron gun
Author :
Li, F. ; He, W. ; Phelps, A.D.R. ; Cross, A.W. ; Donaldson, C.R. ; Ronald, K.
Author_Institution :
Dept. of Phys., Univ. of Strathclyde, Glasgow, UK
Abstract :
The design and simulation of a harmonic gyrotron based on a cusp electron gun is presented. The gyrotron is operated at the 7th electron cyclotron harmonic with an output frequency of ~390 GHz and mode pattern of TE71. A large orbit electron beam with energy of 40 keV, beam current of 1.5A and an adjustable pitch alpha from 1 to 3 from a cusp gun is used to drive the beam-wave interaction. Smooth cylindrical waveguide and slotted structures have been studied as interaction cavities. Theoretical analysis and numerical simulation results of these structures will be presented.
Keywords :
circular waveguides; electron beams; electron guns; gyrotrons; numerical analysis; TE71 mode pattern; adjustable pitch alpha; beam interaction; cusp electron gun; cylindrical waveguide; electron beam current; electron beam energy; electron cyclotron; harmonic gyrotron design; harmonic gyrotron simulation; interaction cavities; numerical simulation; slotted structures; theoretical analysis; Cyclotrons; Electric potential; Electrodes; Electron beams; Harmonic analysis; Imaging; Shape;
Conference_Titel :
High Power Particle Beams (BEAMS), 2008 17th International Conference on
Conference_Location :
Xian
