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3-Dimensional simulation of multistage depressed collectors on microcomputers.

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<mark>Journal publication date</mark>09/1995
<mark>Journal</mark>IEEE Transactions on Electron Devices
Issue number9
Volume42
Number of pages11
Pages (from-to)1663-1673
Publication StatusPublished
<mark>Original language</mark>English

Abstract

A three-dimensional (3-D) package for simulation of asymmetric and crossed-field multistage depressed collectors for microwave tubes has been developed. This package is based upon the 3-D finite-difference code KOBRA3-INP. The main features of the package are a user-friendly input interface, postprocessors for collector analysis and calculation of secondary electron trajectories, and versatile output graphics. Both PC and. mainframe versions of the package have been developed. The results of simple benchmark tests and those of simulation and analysis of asymmetric and crossed-field collectors including the effects of secondary electrons are presented. It is found that the asymmetric hyperbolic electric field collector shows very low backstreaming. It is shown that the representation of trajectories in energy space gives a better insight into the behavior of individual trajectories than plotting in coordinate-space. The package will be useful for designing novel types of depressed collector.

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