论文标题
电磁像素量热计原型Epical-2的性能
Performance of the Electromagnetic Pixel Calorimeter Prototype EPICAL-2
论文作者
论文摘要
提出了使用1.0-5.8 GEV/C电子对超高粒度数字电磁量原型的首次评估。 $ 25 \ times10^6 $像素检测器由24层Alpide CMOS地图传感器组成，俯仰约为30〜 $ $ m，并且深度为近20个辐射长度的钨吸收剂。超薄电缆可实现非常紧凑的设计。测量对物理研究至关重要的特性：电磁淋浴响应，能量分辨率和线性性。随机能量分辨率与Si-W热量表的最新分辨率相当，数据通过使用Geant和AllPix $^2 $的模拟模型很好地描述了数据。达到的性能使该技术成为了在爱丽丝局部升级中使用的良好候选者，并且通常展示了未来在高能物理中应用的强大潜力。
The first evaluation of an ultra-high granularity digital electromagnetic calorimeter prototype using 1.0-5.8 GeV/c electrons is presented. The $25\times10^6$ pixel detector consists of 24 layers of ALPIDE CMOS MAPS sensors, with a pitch of around 30~$μ$m, and has a depth of almost 20 radiation lengths of tungsten absorber. Ultra-thin cables allow for a very compact design. The properties that are critical for physics studies are measured: electromagnetic shower response, energy resolution and linearity. The stochastic energy resolution is comparable with the state-of-the art resolution for a Si-W calorimeter, with data described well by a simulation model using GEANT and Allpix$^2$. The performance achieved makes this technology a good candidate for use in the ALICE FoCal upgrade, and in general demonstrates the strong potential for future applications in high-energy physics.
