arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.05939physics.ins-dethep-ex
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位置灵敏气体探测器对氩、氙原子核Migdal效应的探测能力

Detection capability of Migdal effect for argon and xenon nuclei with position sensitive gaseous detectors

Kiseki D. Nakamura, Kentaro Miuchi, Shingo Kazama, Yutaro Shoji, Masahiro Ibe, Wakutaka Nakano

摘要:

由于迁移效应可以提高直接探测低质量区域暗物质的灵敏度,因此引起了人们的兴趣。尽管米格达尔效应非常重要,但尚未在实验上观察到。用蒙特卡罗模拟研究了中子散射中Migdal效应首次观测的一种现实的实验方法。在这项研究中,潜在的背景率一起研究的事件率的米格达尔效应的中子源。发现填充有氩或氙目标气体的桌面大小的$\sim (30\rm cm )^3$位置敏感气体检测器可以以足够的速率(O($10^2\sim10^3$)事件/天)检测Migdal效应的特征签名。一个简单的实验装置的模拟结果表明,两个显着的背景源,即本征中子和中子感生γ射线。这些背景率被发现是远远高于中子散射中的Migdal效应。作为这项研究的结果,它的结论是,在中子散射中的Migdal效应的实验观察可以实现一个很好的理解和减少的背景。

英文摘要:

Migdal effect is attracting interests because of the potential to enhance the sensitivities of direct dark matter searches to the low mass region. In spite of its great importance, the Migdal effect has not been experimentally observed yet. A realistic experimental approach towards the first observation of the Migdal effect in the neutron scattering was studied with Monte Carlo simulations. In this study, potential background rate was studied together with the event rate of the Migdal effect by a neutron source. It was found that a table-top sized $\sim (30\rm cm )^3$ position-sensitive gaseous detector filled with argon or xenon target gas can detect characteristic signatures of the Migdal effect with sufficient rates (O($10^2\sim10^3$) events/day). A simulation result of a simple experimental set-up showed two significant background sources, namely the intrinsic neutrons and the neutron induced gamma-rays. These background rates were found to be much higher than those of the Migdal effect in the neutron scattering. As a consequence of this study, it is concluded that the experimental observation of the Migdal effect in the neutron scattering can be realized with a good understanding and reduction of the background.

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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