Particle flow oriented electromagnetic calorimeter optimization for the circular electron positron collider
Particle flow oriented electromagnetic calorimeter optimization for the circular electron positron collider
复制标题
圆形正负电子对撞机粒子流导向电磁量热仪优化
DOI：
10.1088/1748-0221/13/03/p03010
复制
发表时间：
2018
影响因子：
1.3
通讯作者：
Ruan M
中科院分区：
文献类型：
--
作者：
Zhao H;Fu C;Yu D;Wang Z;Hu T;Ruan M
电磁量能器（ECAL）的设计和优化是环形电子正电子对撞机（CEPC）项目的关键，该项目是一个拟议中的未来Higgs/Z工厂。根据国际大型探测器（ILD）的参考设计，在Geant 4模拟中实现了一组硅钨采样ECAL几何结构，然后使用Arbor算法对其性能进行了扫描。分析了不同ECAL纵向结构下的光子能量响应，研究了不同ECAL横向单元尺寸下相邻光子簇间的分离性能，并进行了参数化。整体表现的特征是一组物理基准，包括希格斯玻色子衰变为一对光子（EM对象）或胶子（喷流）的νν H事件和Z→ τ+ τ−事件。基于这些结果，我们提出了一个优化的ECAL几何CEPC项目。
The design and optimization of the Electromagnetic Calorimeter (ECAL) are crucial for the Circular Electron Positron Collider (CEPC) project, a proposed future Higgs/Z factory. Following the reference design of the International Large Detector (ILD), a set of silicon-tungsten sampling ECAL geometries are implemented into the Geant4 simulation, whose performance is then scanned using Arbor algorithm. The photon energy response at different ECAL longitudinal structures is analyzed, and the separation performance between nearby photon showers with different ECAL transverse cell sizes is investigated and parametrized. The overall performance is characterized by a set of physics benchmarks, including νν H events where Higgs boson decays into a pair of photons (EM objects) or gluons (jets) and Z→ τ+ τ− events. Based on these results, we propose an optimized ECAL geometry for the CEPC project.