Archana Sharma

"A How-to Approach for a 3d Simulation of Charge Transfer Characteristics in a Gas Electron Multiplier (GEM)"

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In this paper a detailed description of how to simulate charge transfer processes in a gaseous device is presented, taking the Gas Electron Multiplier (GEM) as an example. A 3-dimensional simulation of the electric field and avalanche is performed. Results on charge transport are compared to experiment and agree within experimental errors; avalanche mechanism and positive ion feedback are studied. The procedures used in the simulation are described in detail, and program scripts are appended.

Last modified: 17 Dec 1999, Jochen.