用于EIC RICH中单光子探测的基于新型纳米金刚石光电阴极的微结构气体探测器研究
Study of MicroPattern Gaseous detectors with novel nanodiamond based photocathodes for single photon detection in EIC RICH
AI总结：
本文研究未来EIC中用于单光子探测的微结构气体探测器，提出以氢化纳米金刚石粉末层作为光电阴极替代CsI，并与THGEM探测器耦合，以解决紧凑装置下光子数量受限及CsI量子效率退化的问题。
摘要：
在未来EIC上鉴别高动量强子至关重要，因此气态RICH探测器是可行的选择。紧凑的对撞机装置要求构建具有短辐射长度的RICH，从而显著限制了探测到的光子数量。采用无窗RICH方法可以在远紫外区域探测到更多光子。CsI的量子效率（QE）在强辐照和空气污染下会下降。基于纳米金刚石的光电阴极（PCs）正被开发作为CsI的替代品。氢化纳米金刚石粉末层作为一种替代光敏材料及其与基于THGEM（厚气态电子倍增器）探测器耦合时的性能，是当前研发的对象。我们报告了研究的初始阶段。
英文摘要：
Identification of high momentum hadrons at the future EIC is crucial, gaseous RICH detectors are therefore viable option. Compact collider setups impose to construct RICHes with small radiator length, hence significantly limiting the number of detected photons. More photons can be detected in the far UV region, using a windowless RICH approach. QE of CsI degrades under strong irradiation and air contamination. Nanodiamond based photocathodes (PCs) are being developed as an alternative to CsI. Recent development of layers of hydrogenated nanodiamond powders as an alternative photosensitive material and their performance, when coupled to the THick Gaseous Electron Multipliers (THGEM)-based detectors, are the objects of an ongoing R\&D. We report about the initial phase of our studies.
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