Title :
The 3D electron gun and collector modeling tool: MICHELLE
Author :
Petillo, J. ; Eppley, K. ; Panagos, D. ; Blanchard, P. ; McClure, T. ; Mondelli, A. ; Nelson, E. ; Dionne, N. ; DeFord, J. ; Held, B. ; Chernyakova, L. ; Humphries, S. ; Burdette, J. ; Cattelino, M. ; True, R. ; Nguyen, K. ; Levush, B.
Author_Institution :
Sci. Applications Int. Corp., Burlington, MA, USA
Abstract :
Progress on a new three-dimensional electron gun and collector design tool is reported. This new simulation code is designed to address the shortcomings of current beam optics simulation and modeling tools used for vacuum electron devices, ion sources, and charged-particle transport. The design tool specifically targets problem classes including gridded-guns, sheet-beam guns, multi-beam devices, and anisotropic collectors, with a focus on improved physics models. The basic physics model in the code is based on the equilibrium steady state application of the electrostatic PIC approximation employing both hexahedral and tetrahedral grid systems.
Keywords :
CAD; electron guns; electron optics; electronic engineering computing; mesh generation; secondary electron emission; travelling wave tubes; MICHELLE code; algorithmic representation; anisotropic collectors; beam optics simulation; depressed collector modeling; electron gun modeling; electrostatic PIC approximation; gridded-guns; hexahedral tetrahedral grid systems; improved physics models; meshing flexibility; multi-beam devices; multiblock architecture; rediffused electrons; secondary emission; sheet-beam guns; simulation code; space-charge-limited emission; temperature-limited emission; tetrahedral grid systems; three-dimensional design tool; Electron devices; Electron optics; Geometrical optics; Guns; Ion sources; Optical beams; Optical design; Optical devices; Particle beam optics; Physics;
Conference_Titel :
Vacuum Electronics Conference, 2002. IVEC 2002. Third IEEE International
Print_ISBN :
0-7803-7256-5
DOI :
10.1109/IVELEC.2002.999312
