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arXiv 2104.13253astro-ph.IMphysics.ins-det
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皮埃尔俄歇天文台地下μ介子探测器信号模拟的发展和验证

Development and validation of the signal simulation for the underground muon detector of the Pierre Auger Observatory

A. M. Botti, F. Sánchez, M. Roth, A. Etchegoyen

摘要:

皮埃尔·俄歇天文台的地下μ子探测器旨在直接测量宇宙射线产生的大范围空气簇射的μ子成分,宇宙射线的能量从$10^{16.5}$ eV到脚踝区域(大约$10^{18.7}$ eV)。它由两个嵌套的地下闪烁器三角形网格组成,间距分别为433 m和750 m,共有71个位置,每个位置有192个闪烁器条(30 m $^2$),部署在地下2.3 m处。由碰撞μ子产生的光通过光纤向硅光电倍增器阵列传播。在这项工作中,我们提出了一个端到端的工具,用于模拟地下μ子探测器对单μ子信号的响应,这构成了进一步模拟整个阵列的基础的开发,验证和性能。实验室数据和模拟结果是一致的,表明与地下μ子探测器,我们可以测量单μ子,效率为99%,高达约1050粒子到达在30米的闪烁体$^2$完全相同的时间。

英文摘要:

The underground muon detector of the Pierre Auger Observatory is aimed at attaining direct measurements of the muonic component of extensive air showers produced by cosmic rays with energy from $10^{16.5}$ eV up to the region of the ankle (around $10^{18.7}$ eV). It consists of two nested triangular grids of underground scintillators with 433 m, and 750 m spacings and a total of 71 positions, each with 192 scintillator strips (30 m$^2$) deployed 2.3 m underground. The light produced by impinging muons in the scintillators is propagated with optical fibers towards an array of silicon photomultipliers. In this work, we present the development, validation, and performance of an end-to-end tool for simulating the response of the underground muon detector to single-muon signals, which constitutes the basis for further simulations of the whole array. Laboratory data and simulation outcomes are found consistent, showing that with the underground muon detector we can measure single muons, with an efficiency of 99 %, up to about 1050 particles arriving at exactly the same time in 30 m$^2$ of scintillator.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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