Electrode design for coplanar-grid detectors
Electrode design for coplanar-grid detectors
复制标题
共面栅极探测器的电极设计
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
D. Close
中科院分区：
文献类型：
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作者：
P. Luke;M. Amman;T. Prettyman;P. Russo;D. Close
共面栅格电荷传感技术为改善基于化合物半导体的伽马射线探测器的光谱响应提供了一种方法，化合物半导体通常具有较差的电荷传输特性。该技术通过有效地修改探测器的电荷感应特性来起作用，从而最小化探测器信号对辐射相互作用深度的依赖。然而，这种技术的有效性可能会受到探测器上不均匀的电荷感应特性的影响。本文研究了探测器边缘附近条纹效应引起的这种不均匀性。研究了为这种影响提供有效补偿的交替电极配置。给出了实验测量和计算机模拟的结果。
The coplanar-grid charge sensing technique provides a method for improving the spectral response of gamma-ray detectors based on compound semiconductors, which typically have poor charge transport properties. The technique functions by effectively modifying the charge induction characteristics of the detector such that the dependence of detector signal on the depth of radiation interaction is minimized. The effectiveness of this technique however can be compromised by non-uniform charge induction characteristics across the detector. This paper examines such non-uniformity due to fringe effects near the detector edges. Alternate electrode configurations are studied that provide effective compensation for such effects. Results from experimental measurements and computer simulations are presented.