Effect of the Magnetic Field of PPM Stack on Electron Beam in the Gun and Transit Area

Author

Liu, Xiu ; Feng, Jinjun ; Huang, Fujin ; Du, Bingchu

Author_Institution

Vacuum Electron. Nat. Lab, Beijing Vacuum Electron. Res. Inst.

fYear

0

fDate

0-0 0

Firstpage

157

Lastpage

158

Abstract

Using the 3D electromagnetic particle-in-cell (PIC) code MAFIA, the simulation of the electronic trajectory in electron gun with PPM stack could be carried out. A 3D electron optics model has been built, which includes a electron gun, transit area and a PPM stack. All components of the model are simulated in three dimensions, allowing the ripple and lamination of the beam in the TWT to be investigated. The 3D TWT electron beam characteristics such as waist position and radius are compared for the two cases with and without the present of the PPM magnetic fields

Keywords

electron beams; electron guns; magnetic field effects; travelling wave tubes; 3D TWT electron beam; 3D electromagnetic particle-in-cell; 3D electron optics model; MAFIA; PPM stack; electron gun; electronic trajectory simulation; gun area; magnetic field effect; transit area; travelling wave tubes; Anodes; Assembly; Cathodes; Electrodes; Electromagnetic shielding; Electron beams; Lamination; Magnetic fields; Magnetic flux; Magnetic shielding;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2006 held Jointly with 2006 IEEE International Vacuum Electron Sources., IEEE International

Conference_Location

Monterey, CA

Print_ISBN

1-4244-0108-9

Type

conf

DOI

10.1109/IVELEC.2006.1666232

Filename

1666232