通过模拟和电流测量研究优化的MicroCAT、GEM及其组合的性能
Investigation of the performance of an optimised MicroCAT, a GEM and their combination by simulations and current measurements
摘要：
的MicroCAT（微Compteur A Trous）的结构，用于雪崩电荷倍增的气体填充的辐射探测器已被优化方面的最大电子透明度和最小的离子反馈。我们报告的电荷转移行为和可实现的气体增益的这种设备。一个三维的电子和离子转移模拟相比，来自电流测量的结果。同样，我们目前的研究的电荷转移行为的GEM（气体电子倍增器）的电流测量和模拟。最后，我们调查的MicroCAT和GEM的组合，通过测量在不同的电压设置，气体混合物和气体压力的性能。
英文摘要：
A MicroCAT (Micro Compteur A Trous) structure which is used for avalanche charge multiplication in gas filled radiation detectors has been optimised with respect to maximum electron transparency and minimum ion feedback. We report on the charge transfer behaviour and the achievable gas gain of this device. A three-dimensional electron and ion transfer simulation is compared to results derived from electric current measurements. Similarly, we present studies of the charge transfer behaviour of a GEM (Gas Electron Multiplier) by current measurements and simulations. Finally, we investigate the combination of the MicroCAT and the GEM by measurements with respect to the performance at different voltage settings, gas mixtures and gas pressures.
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