Fast muon simulation in the JUNO central detector

Fast muon simulation in the JUNO central detector
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JUNO 中央探测器中的快速 μ 子模拟

DOI:
10.1088/1674-1137/40/8/086201
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发表时间:
2016-01
期刊:
影响因子:
3.6
通讯作者:
Li Xin-Ying
Li Xin-Ying
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Lin Tao;Deng Zi-Yan;Li Wei-Dong;Cao Guo-Fu;You Zheng-Yun;Li Xin-Ying

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江门地下中微子天文台(JUNO)是一个多用途中微子实验,旨在使用一个中央探测器(CD)来测量中微子的质量层次,该探测器包含20万吨的液体闪烁体(LS),周围环绕着大约17000个光电倍增管(pmt)。由于大量的基准体积和大量的pmt,使用Geant4工具包模拟μ介子粒子通过CD成为一项极其计算密集型的任务。本文提出了一种采用体素法的快速仿真实现方法:对于在特定LS体素中产生的闪烁光子,事先使用Geant4生成PMT的响应,然后在运行时将其引入仿真。这种参数化方法成功地将消耗CPU最多的过程,即光光子在LS中的传播速度提高了50倍。本文还比较了快速仿真和完全仿真的物理性能。
The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment designed to measure the neutrino mass hierarchy using a central detector (CD), which contains 20 kton liquid scintillator (LS) surrounded by about 17000 photomultiplier tubes (PMTs). Due to the large fiducial volume and huge number of PMTs, the simulation of a muon particle passing through the CD with the Geant4 toolkit becomes an extremely computation-intensive task. This paper presents a fast simulation implementation using a so-called voxel method: for scintillation photons generated in a certain LS voxel, the PMT's response is produced beforehand with Geant4 and then introduced into the simulation at runtime. This parameterisation method successfully speeds up the most CPU consuming process, the optical photon's propagation in the LS, by a factor of 50. In the paper, the comparison of physics performance between fast and full simulation is also given.
影响因子: 1.4
作者:
Brun, R;Rademakers, F
通讯作者: Rademakers, F
DOI: 10.1063/1.4826754
发表时间: 2013-11
期刊: ArXiv
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DOI: 10.1109/tns.2006.881062
发表时间: 2006-10-01
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影响因子: 6.3
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