论文标题
CEE的原型ITOF-MRPC的研发
R & D of prototype iTOF-MRPC at CEE
论文作者
论文摘要
冷却存储环（CSR）外部目标实验（CEE）是在Lanzhou的重离子研究设施（HIRFL）运行的光谱仪。 CEE是中国第一个以1 GEV的能量在固定目标模式下运行的大规模核物理实验装置。 CEE的目的是研究密集核物质的性质。 CEE使用多间隙电阻板室（MRPC）作为其内部飞行时间（ITOF）检测器来识别最终状态颗粒。一个具有24个差距的ITOF-MRPC原型旨在满足CEE的要求，并且原型的读数电子使用基于FPGA的时间数字化技术。使用宇宙射线测试，发现ITOF原型的时间分辨率约为30 ps。为了进一步了解如何改善MRPC的时间分辨率，使用ANSYS HFSS来模拟MRPC中的信号传输过程。影响了MRPC的时序性能的主要因素，因此提出了优化方案。
The cooling storage ring (CSR) external-target experiment (CEE) is a spectrometer running at the Heavy Ion Research Facility (HIRFL) at Lanzhou. The CEE is the first large-scale nuclear physics experimental device by China to operate in the fixed-target mode with an energy of 1 GeV. The purpose of the CEE is to study the properties of dense nuclear matter. CEE uses a multi-gap resistive plate chamber (MRPC) as its internal time-of-flight (iTOF) detector for the identification of final-state particles. An iTOF-MRPC prototype with 24 gaps was designed to meet the requirements of CEE, and the readout electronics of the prototype use the FPGA-based time digitization technology. Using cosmic ray tests, the time resolution of the iTOF prototype was found to be approximately 30 ps. In order to further understand how to improve the time resolution of MRPC, ANSYS HFSS was used to simulate the signal transmission process in MRPC. The main factors affecting the timing performance of the MRPC and, accordingly, the optimization scheme are presented.
