Gain stabilization in Micro Pattern Gaseous Detectors: methodology and results
Gain stabilization in Micro Pattern Gaseous Detectors: methodology and results
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DOI：
10.1088/1748-0221/12/09/p09036
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发表时间：
2017-07
影响因子：
1.3
通讯作者：
D. S. Renous;A. Roy;A. Breskin;S. Bressler
中科院分区：
文献类型：
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作者：
D. S. Renous;A. Roy;A. Breskin;S. Bressler
雪崩增益随时间变化的现象，特别是在包含绝缘体材料的微图案气体探测器（MPGD）中，通常归因于绝缘体的“充电”效应导致的电场修改。一个强大的方法，在这样的检测器的增益瞬态特性。它包括三项准则：检测器初始化、长增益稳定监控以及通过在操作条件中应用突变来施加瞬态。使用THWELL和RPWELL探测器，我们验证了所提出的方法，通过评估充电/充电下降模型描述的增益稳定的管理过程。这些结果提供了一个更深入的了解这些过程中，反映了不同的瞬态后，突然变化的探测器增益或照射速率。这种方法为未来研究包含绝缘元件的MPGD探测器中所涉及的物理现象提供了一个方法。
The phenomenon of avalanche-gain variations over time, particularly in Micro Pattern Gaseous Detectors (MPGD) incorporating insulator materials, have been generally attributed to electric-field modifications resulting from “charging-up” effects of the insulator. A robust methodology for characterization of gain-transients in such detectors is presented. It comprises three guidelines: detector initialization, long gain-stabilization monitoring and imposing transients by applying abrupt changes in operation conditions. Using THWELL and RPWELL detectors, we validated the proposed methodology by assessing a charging-up/charging-down model describing the governing processes of gain stabilization. The results provide a deeper insight into these processes, reflected by different transients upon abrupt variations of detector gain or the irradiation rate. This methodology provides a handle for future investigations of the involved physics phenomena in MPGD detectors comprising insulating components.