Design and performance of the first IceAct demonstrator at the South Pole
Design and performance of the first IceAct demonstrator at the South Pole
复制标题
南极第一个 IceAct 演示器的设计和性能
DOI：
10.1088/1748-0221/15/02/t02002
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发表时间：
2020
影响因子：
1.3
通讯作者：
Ansseau, I.
中科院分区：
文献类型：
--
作者：
Aartsen, M.G.;Ackermann, M.;Adams, J.;Aguilar, J.A.;Ahlers, M.;Ahrens, M.;Alispach, C.;Andeen, K.;Anderson, T.;Ansseau, I.
高能中微子是研究极高能宇宙的独特探测器。中微子从宇宙中的产生点到达我们，不会被磁场吸收或偏转。 IceCube 中微子观测站发现了源自宇宙的高能中微子通量 [1, 2]。观测到的中微子通量几乎各向同性地到达地球。最近，活动星系 TXS 0506+ 056 相关中微子和光子发射的证据已被报道 [3, 4]。IceCube 的主要仪器 [5] 是一个大容量切伦科夫探测器，它通过 5160 个数字光学模块 (DOM) 对南极 1.45 km 至 2.45 km 深度之间的冰川进行测量，每个模块包含一个 10 英寸光电倍增管 [6] 和相关电子产品[7]。这些 DOM 沿着 86 条垂直线冻结在冰中，每条线有 60 个 DOM。除了冰内探测器外，表面还配备了 IceTop 空气淋浴探测器 [8]，该探测器由 162 个切伦科夫罐组成，每个罐包含约 3 立方米的透明冰，并配备有两个 DOM。该探测器的主要目的是校准 IceCube 以及膝盖和脚踝之间能量范围内的宇宙射线物理学，大致从 1015 eV 到 1018 eV。最近，通过否决与中微子同时发生的空气簇射，从而抑制宇宙射线诱发μ介子的背景，也建立了提高天体物理中微子搜索灵敏度的能力[9, 10]。
High-energy neutrinos are a unique probe to study the extreme high-energy universe. Neutrinos reach us from their production sites in the universe without absorption or deflection by magnetic fields. The IceCube Neutrino Observatory has discovered a flux of high-energy neutrinos of cosmic origin [1, 2]. The observed neutrino flux arrives almost isotropically at Earth. Recently, evidence for correlated neutrino and photon emission from the active galaxy TXS 0506+ 056 has been reported [3, 4].IceCube’s main instrument [5] is a large-volume Cherenkov detector that instruments the glacial ice at the South Pole between depths from 1.45 km to 2.45 km with 5160 digital optical modules (DOMs) each containing a 10 inch photomultiplier tube [6] and associated electronics [7]. These DOMs are frozen into the ice along 86 vertical strings, with 60 DOMs per string. In addition to the in-ice detector, the surface is instrumented with the IceTop air-shower detector [8] that is composed of 162 Cherenkov tanks, each containing about 3 cubic meters of clear ice, instrumented with two DOMs. The main purpose of this detector is the calibration of IceCube as well as cosmic ray physics in the energy range between the knee and ankle, roughly from 1015 eV to 1018 eV. Recently, also the capabilities to improve the sensitivity for astrophysical neutrino searches have been established by vetoing air-showers coincident with neutrinos and thus suppressing the background of cosmic ray induced muons [9, 10].