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arXiv 2104.10604physics.ins-dethep-exhep-ph
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ProtoDUNE探测器的放射性背景

Radioactive background for ProtoDUNE detector

Mihaela Parvu, Ionel Lazanu

摘要:

深地下中微子实验(DUNE)是中微子科学和质子衰变研究的前沿国际实验。这个实验正在寻找关于物质性质和宇宙演化的几个基本问题的答案:物质的起源,力的统一,黑洞的物理学。两个远探测器原型使用两种不同的技术已经在欧洲核子研究中心开发。这些样机正在测试和验证液氩时间投影室技术(LArTPC)。在中微子物理学中,以及在任何具有稀有相互作用率的实验中,良好的放射性背景知识对于研究的成功是重要的。与大多数带电粒子或短寿命中性粒子不同,μ子和中子是这类实验的主要背景来源。在本文中,我们考虑了两种中子源:宇宙中子和来自加速隧道的中子。此外,宇宙μ子也被考虑在内。这些粒子的贡献,以生产放射性同位素内的检测器的有效体积相比,对应于μ子。此外,模拟的核反应的感兴趣的过程,调查由于缺乏测量或实验数据不足的放射性背景。所得结果对今后的地下DUNE实验具有参考价值。

英文摘要:

The Deep Underground Neutrino Experiment (DUNE) is a leading-edge, international experiment for neutrino science and proton decay studies. This experiment is looking for answers regarding several fundamental questions about the nature of matter and the evolution of the universe: origin of matter, unification of forces, physics of black holes. Two far detector prototypes using two distinct technologies have been developed at CERN. The prototypes are testing and validating the liquid argon time projection chamber technology (LArTPC). In neutrino physics, as well as in any experiment with rare interaction rate, the good knowledge of the radioactive backgrounds is important to the success of the study. Unlike most of the charged particles or short lived neutral particles, muons and neutrons represent the main sources of background for this kind of experiments. In this paper, we have considered two sources of neutrons: cosmic neutrons and neutrons coming from the accelerating tunnel. Also, cosmic muons are taken into account. The contribution of these particles to the production of radioactive isotopes inside the active volume of the detector in comparison to the one corresponding to muons is shown. Also, simulations of nuclear reactions for the processes of interest for investigating the radioactive background due to the lack of measurements or insufficient experimental data are presented. The results presented are of interest for the future underground DUNE experiment.

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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