XENONnT中子和介子的中微子探测

IF 5.9 2区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY Rivista Del Nuovo Cimento Pub Date : 2020-01-01 DOI:10.1393/NCC/I2020-20119-Y
F. Pompa
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引用次数: 0

摘要

XENON暗物质项目的当前阶段名为xenonnt,将于2020年在地下的格兰萨索国家实验室(LNGS)投入使用。它是一个用于直接搜索暗物质的多吨探测器,由一个双相液气氙时间投影室(TPC)组成,其中包含5.9吨液态氙目标质量,插入低温恒温器中,周围是一个装有700吨掺有硫酸Gd的水的水箱。和它的前身XENON1T一样,它的目标是探测弱相互作用大质量粒子(wimp)在氙核外的弹性散射。两个Veto子系统的存在,由84个光电倍增管(pmt)组成的μ否决权和由其他120个光电倍增管组成的中子否决权,允许通过μ子和中子标记减少wimp搜索的背景,而硫酸Gd的存在增加了中子捕获截面。由于使用了巨大的氙靶和两个vetoe的存在,XENONnT也将能够探测到所有类型的超新星中微子。本文利用蒙特卡罗模拟的结果,介绍了在两个Veto子系统中,超新星中微子在水中的逆betdecay相互作用对xenonnt探测效率的影响。
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Supernova neutrino detection in XENONnT neutron and muon Vetoes
The current phase of the XENON Dark Matter Project, named XENONnT, will be operative in 2020 in the underground Laboratori Nazionali del Gran Sasso (LNGS). It is a multi-ton detector for direct search of Dark Matter, consisting of a double phase liquid-gas xenon Time Projection Chamber (TPC) which contains 5.9 tons of liquid xenon target mass, inserted in a cryostat surrounded by a tank containing 700 tons of water doped with Gd sulphate. Its aim, as that of its precursor XENON1T, is to detect elastic scattering of Weakly Interacting Massive Particles (WIMPs) off xenon nuclei. The presence of two Veto sub-systems, the muon Veto instrumented with 84 photomultiplier tubes (PMTs) and the neutron Veto with other 120 PMTs, allows to reduce the background for WIMPs search through muon and neutron tagging, while the presence of Gd sulphate increases the neutron capture cross section. Thanks to the large xenon target used and the presence of the two Vetoes, XENONnT will be able also to detect all flavours of Supernova neutrinos. Here the results from Monte Carlo simulations of XENONnT detection efficiency are presented for Supernova neutrinos through their inverse beta decay interactions in water of the two Veto sub-systems.
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来源期刊
Rivista Del Nuovo Cimento
Rivista Del Nuovo Cimento 物理-物理:综合
CiteScore
9.50
自引率
2.20%
发文量
11
审稿时长
>12 weeks
期刊介绍: La Rivista del Nuovo Cimento is an international peer-reviewed journal. It publishes monographs in all fields of physics. These monographies aim at presenting the state of the art of topical subjects of relevant interest for the community. Usually, authors are invited and topics suggested by the Deputy Editors-in-Chief, but also spontaneous submissions are examined.
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