Recent Developments on EOS 2-D/3-D Electron Gun and Collector Modeling Code

Recent developments on our electron optics simulator (EOS) are reported in this paper. EOS is the finite-element 2-D and 3-D steady-state beam trajectory codes which target problem classes, including axisymmetric guns, gridded guns, multibeam guns, and multistage depressed collectors at present. In...

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Bibliographic Details
Published in:IEEE transactions on electron devices 2010-07, Vol.57 (7), p.1696-1701
Main Authors: Hu, Quan, Huang, Tao, Yang, Zhong Hai, Li, Jian Qing, Jin, Xiao Lin, Zhu, Xiao Fang, Hu, Yu Lu, Xu, Li, Li, Bin
Format: Article
Language:English
Subjects:
Accumulators
Axisymmetric
Collector
Collectors
Computation
Computational modeling
Computer simulation
computer-aided design (CAD)
Computers
Earth Observing System
electron gun
electron optics simulator (EOS)
finite-element method (FEM)
Guns
Mathematical analysis
Mathematical models
Memory management
Solid modeling
Time domain analysis
Trajectory
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Summary:Recent developments on our electron optics simulator (EOS) are reported in this paper. EOS is the finite-element 2-D and 3-D steady-state beam trajectory codes which target problem classes, including axisymmetric guns, gridded guns, multibeam guns, and multistage depressed collectors at present. In order to improve the accuracy, to reduce computational time and computer memory consumption, and to extend the application scope, four significant advances to EOS have been made, and they are presented in this paper. The quadratic interpolation function, which has a higher accuracy than the linear interpolation function, is employed. A time-domain electrostatic model is built to simulate some transient effects. The symmetric computation algorithm and the 2-D model are applied for symmetric and axisymmetric structures to reduce the computational time and the computer memory consumption. Moreover, the results of the modified model and the original model are compared and analyzed in detail.
ISSN:0018-9383
1557-9646
DOI:10.1109/TED.2010.2049214