Title :
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.
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;
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
DOI :
10.1109/IVELEC.2006.1666232
