论文标题
Juno实验的递延光学光子模拟
Deferred Optical Photon simulation for the JUNO experiment
论文作者
论文摘要
江门地下中微子天文台（JUNO）旨在确定中微子质量排序和精确测量振荡参数。它是在中国南部建造的，深度为700 〜M，包括中央探测器，水塞伦科夫探测器和顶级跟踪器。中央检测器的设计旨在检测抗神经酮在1〜MEV时的能量分辨率为3 \％，使用20 kt液体闪烁体目标，其靶标为17,612 20英寸PMT和25,600 3英寸PMT。闪烁体提供了每MEV约10,000个光子的光收益。蒙特卡洛模拟是一种至关重要的工具，用于建立对探测器性能的理解，需要使用光光子生产大量的背景过程。使用Geant4对大量光学光子进行仿真对于处理时间和内存资源都在计算上具有挑战性。为了优化资源使用情况，建议使用GEANT4类提出并实施了递延光光子仿真工作流。关键思想是最初在没有光光子的情况下模拟事件，仅在满足用户指定标准时才执行光学光子仿真。 在此贡献中，将提出递延光光子仿真的设计和实施。
The Jiangmen Underground Neutrino Observatory (JUNO) is designed to determine the neutrino mass ordering and precisely measure oscillation parameters. It is being built in South China at a depth of 700~m underground and comprises a central detector, water Cerenkov detector and top tracker. The central detector is designed to detect anti-neutrinos with an energy resolution of 3\% at 1~MeV, using a 20 kt liquid scintillator target with 17,612 20-inch PMTs and 25,600 3-inch PMTs. The scintillator provides a light yield of approximately 10,000 photons per MeV. Monte Carlo simulation is a crucial tool for developing an understanding of detector performance, requiring the production of large samples of background processes with optical photons. Simulation of large numbers of optical photons with Geant4 is computationally challenging for both processing time and memory resources. In order to optimize resource usage, a deferred optical photon simulation workflow is proposed and implemented using Geant4 classes. The key idea is to simulate events initially without optical photons, only performing the optical photon simulation when user specified criteria are met. In this contribution, the design and the implementation of the deferred optical photon simulation will be presented.
