Design of a LYSO Crystal Electromagnetic Calorimeter for DarkSHINE Experiment
Abstract
This paper presents the design and optimization of a LYSO crystal electromagnetic calorimeter (ECAL) for the DarkSHINE experiment, which aims to search for dark photons as potential mediators of dark forces. The ECAL design was evaluated through comprehensive simulations, focusing on optimizing dimensions, material selection, energy distribution, and energy resolution. The ECAL configuration consists of 212111 LYSO crystals, each measuring 2.52.54 cm, arranged in a staggered layout to improve signal detection efficiency. A 4 GeV energy dynamic range was established to ensure accurate energy measurements without saturation, which is essential for background rejection and signal identification. A detailed digitization model was developed to simulate the scintillation, SiPM, and ADC behaviors, providing a more realistic representation of detector performance. Additionally, the study assessed radiation damage in the ECAL region, highlighting the necessity of radiation-resistant scintillators and silicon sensors.
Cite
@article{arxiv.2407.17800,
title = {Design of a LYSO Crystal Electromagnetic Calorimeter for DarkSHINE Experiment},
author = {Zhiyu Zhao and Qibin Liu and Jiyuan Chen and Jing Chen and Junfeng Chen and Xiang Chen and Changbo Fu and Jun Guo and Kim Siang Khaw and Liang Li and Shu Li and Danning Liu and Kun Liu and Siyuan Song and Tong Sun and Jiannan Tang and Yufeng Wang and Zhen Wang and Weihao Wu and Haijun Yang and Yuming Lin and Rui Yuan and Yulei Zhang and Yunlong Zhang and Baihong Zhou and Xuliang Zhu and Yifan Zhu},
journal= {arXiv preprint arXiv:2407.17800},
year = {2024}
}