厚气体电子倍增器（THGEM）是近十年来刚刚发展起来的一种新型气体探测技术，具有和气体电子倍增器（GEM）类似的工作原理和特点。由于其低造价、高增益、高计数率承受能力和较好的位置分辨本领，成为目前微结构气体探测器研发的热点之一。穿越辐射探测器（TRD）是高能带电粒子（尤其是电子）鉴别的重要方法，其读出常采用多丝室等传统技术。本项目拟将THGEM用于TRD读出中，研究适合于TRD探测的THGEM工作参数，一方面深入研究THGEM的工作原理，尤其是采用氙气为工作气体时THGEM的工作状态，另一方面将通过实验测试和参数优化，研制出新一代高计数率、高分辨能力的TRD。该THGEM-TRD可能适用于未来的电子-离子对撞机上的实验研究。

Thick Gaseous Electron Multiplier (THGEM) is a novel gaseous detector only developed recently. The operation mechanism and performance of a THGEM is very similar to that of a Gaseous Electron Detector (GEM). It has been under intensive study due to its low-cost, high gain, high rate capacity and modest spatial resolution. The development on THGEM has been a great progress in the global effort on micro-pattern detectors. The Transition Radiation Detector (TRD) is an important detection technique for identifying high-energy charged particle, especailly electron (and positron). The readout method involved in TRD is usually multi-wire chambers. However, with the newly deveoped THGEM technique, we plan to construct and study the TRD with THGEM as its readout method. Operation parameters suitable to TRD will be studied for THGEM detector. This work will on one hand extend our knowledge on the performance of THGEM, especially for those working in Xe-based gas misture. On the other hand, novel TRD prototype with high performance will be constrcuted and tested, and optimized. Such kind of new TRD with THGEM readout may be suitalbe in the experiments on an electron-ion collider (EIC).