arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2512.04432physics.ins-dethep-ex
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EicC电磁量能器的设计与性能仿真

Design and Performance Simulation of the Electromagnetic Calorimeter at EicC

Institute of Modern Physics, Chinese Academy of Sciences(中国科学院近代物理研究所);School of Nuclear Science and Technology, University of Chinese Academy of Sciences(中国科学院大学核科学与技术学院)

Ye Tian, Souvik Maity, Jingyu Li, Yuancai Wu, Shan Sha, Yutie Liang, Aiqiang Guo, Yuxiang Zhao, Dexu Lin

AI总结:

本文介绍了EicC电磁量能器的设计与性能仿真,通过Geant4模拟优化了各部分几何和材料组成,实现了高能量和位置分辨率及强电子-缪子鉴别能力。

摘要:

电磁量能器(ECAL)是电子-离子碰撞实验中精确测量电子和光子的关键探测器组件。在位于中国电子离子对撞机(EicC)中,高性能量能学对于探索核子内部结构和研究量子色动力学(QCD)中夸克和胶子动力学至关重要。本文提出了EicC ECAL系统的优化设计和性能仿真。ECAL由三个专门化的部分组成,分别适应不同的探测环境:(1)电子端帽采用高分辨率纯铯碘(pCsI)晶体,(2)中央筒形部分,(3)离子端帽,均采用改进光产量的Shashlik式采样量能器。通过Geant4模拟对每个部分的几何和材料组成进行了系统优化,以实现优异的能量和位置分辨率以及强电子-缪子鉴别能力。模拟性能表明,ECAL可实现pCsI晶体的能量分辨率为2%除以sqrt(E),Shashlik模块为5%除以sqrt(E),满足EicC探测器的设计目标。

英文摘要:

The electromagnetic calorimeter (ECAL) is a key detector component for precise electron and photon measurements in electron-ion collision experiments. At the Electron-Ion Collider in China (EicC), high-performance calorimetry is essential for exploring the internal structure of nucleons and studying the dynamics of quarks and gluons within quantum chromodynamics (QCD). This paper presents the optimized design and performance simulation of the EicC ECAL system. The ECAL consists of three specialized sections tailored to distinct detection environments: (1) an electron-Endcap employing high-resolution pure Cesium Iodide (pCsI) crystals, (2) a central barrel, and (3) an ion-Endcap, both adopting a cost-effective Shashlik-style sampling calorimeter with improved light yield. Each segment's geometry and material composition have been systematically optimized through Geant4 simulations to achieve excellent energy and position resolutions as well as strong electron-pion discrimination. The simulated performance indicates that the ECAL can achieve energy resolutions of 2 percent divided by sqrt(E) for pCsI crystals and 5 percent divided by sqrt(E) for Shashlik modules, meeting the design goals of the EicC detector.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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