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Amplification process of a gas electron multiplier simulated by PIC-MCC model

Nuclear Science and Techniques 2012年第4期23卷 203-208页

作者： harm tolner School of Electronic Science and Engineering Southeast University Nanjing 210096China

The performance of a single gas electron multiplier(GEM) in pure Xe at an atmospheric pressure is investigated by Particle in Cell-Monte Carlo Collision(PIC-MCC) *** micro development processes with electrons and ions distributions in space have been *** on the micro development processes,the macroscopic parameters such as GEM gain and the effective efficiency have also been *** simulation results indicate that after tens of nanoseconds,electrons are collected by the readout electrode while the ions still exist in the gas space for several *** main signal current is formed by the electrons arriving at the readout electrode,but electrons and ions are also collected by the copper electrodes near the GEM hole and the thin Kapton film *** simulated gain of GEM exponentially increases with the applied GEM *** the PIC-MCC simulations,both the physical amplification and charging mechanisms in the GEM device can be well understood,which is beneficial to the device design.

关键词：气体电子倍增器模型模拟放大过程 Kapton 空间分布创业板铜电极 te模型

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