Title :
Computer modelling of the possible multipactor effect in the output system of an experimental S band magnetron
Author :
Ma, L. ; Chen, X. ; Esterson, M. ; Lindsay, P.A.
Author_Institution :
Dept. of Electron. Eng., London Univ., UK
Abstract :
Our presentation describes computer modelling of a possible multipactor effect in the output system of an experimental S band magnetron. The output system is a cylindrical waveguide with two coaxial lines feeding a dipole. A metal rod supports the dipole in the middle. It has been observed that certain areas of the two coaxial coupling rods would melt during some operations. Computer simulation shows no indication of possible current overheating or ´ghost-mode´ resonance in the melted region. This leads us to suspect that the multipactor. or the related gas discharge is responsible for the melting of the coupling rods.
Keywords :
circular waveguides; electron avalanches; high-frequency discharges; magnetrons; secondary electron emission; MAGIC code; S band magnetron; avalanche; coaxial lines; computer modelling; coupling rods melting; cylindrical waveguide; dipole; electron cloud; multipactor effect; output system; resonant vacuum discharge; secondary electron emission; Acceleration; Clouds; Coaxial components; Educational institutions; Electromagnetic heating; Electron emission; Electron tubes; Magnetic resonance; Radio frequency; Surface discharges;
Conference_Titel :
Vacuum Electronics Conference, 2002. IVEC 2002. Third IEEE International
Print_ISBN :
0-7803-7256-5
DOI :
10.1109/IVELEC.2002.999361
