Title :
3-dimensional particle-in-cell modeling of a shadow-gridded electron gun
Author :
Janardhan, P. ; Kamath, S. ; Christie, V.L. ; Kumar, L.
Author_Institution :
Microwave Tube Res. & Dev. Centre, Bangalore, India
Abstract :
Shadow-gridded electron guns are most commonly used in present day pulsed traveling-wave tubes and other linear beam devices. The 3-D PIC code MAFIA, which solves Maxwell´s grid equations by finite integration algorithm is a useful tool for simulation of electromagnetic fields and particles in 3-dimensional geometry. In this paper a shadow-gridded electron gun, which was designed for use in a coupled-cavity TWT, has been simulated using MAFIA.
Keywords :
Maxwell equations; digital simulation; electron guns; microwave tubes; travelling wave tubes; 3-D PIC code MAFIA; 3-dimensional geometry; 3-dimensional particle-in-cell modeling; Maxwell grid equations; coupled-cavity TWT; electromagnetic fields; finite integration algorithm; pulsed traveling-wave tubes; shadow-gridded electron gun; Analytical models; Cathodes; Electron beams; Electron guns; Electron tubes; Electrostatics; Geometry; Microwave devices; Particle beams; Solid modeling;
Conference_Titel :
Vacuum Electronics Conference, 2000. Abstracts. International
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-5987-9
DOI :
10.1109/OVE:EC.2000.847491
