3-D Finite-Element Analysis of TWT Grid Electron Guns

Author

Coco, Salvatore ; Laudani, Antonino ; Pollicino, Giuseppe ; Dionisio, Roberto ; Martorana, Rosario

Author_Institution

Catania Univ.

Volume

43

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

1233

Lastpage

1236

Abstract

A novel three-dimensional FE procedure for the analysis of electron guns inside traveling wave tubes (TWTs) is presented, illustrating its main features. In this procedure, electron trajectories modeling cathode emission are obtained by solving a Vlasov-Poisson system of equations together with the relativistic dynamical equations of motion, under consistent particle injection conditions. This coupled electromechanical problem is solved iteratively by assuming stationary conditions. Simulation results concerning a gridded electron gun are presented, showing good agreement with available experimental data

Keywords

Poisson equation; Vlasov equation; electron guns; finite element analysis; travelling wave tubes; 3D finite element analysis; Vlasov-Poisson system; coupled electromechanical problem; grid electron guns; particle injection conditions; relativistic dynamical equations; traveling wave tubes; Electromagnetic analysis; Electron beams; Electron emission; Electron guns; Electron tubes; Finite element methods; Geometry; Iron; Maxwell equations; Radio frequency; Electron beams; electron guns; finite-element method (FEM); traveling wave tubes (TWTs);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.890966

Filename

4137695