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arXiv 2108.00364astro-ph.HEastro-ph.IM
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计划用于IceCube-Gen2的表面阵列(ICRC 2021)

The Surface Array planned for IceCube-Gen2 (ICRC 2021)

Frank G. Schroeder

摘要:

IceCube-Gen 2是IceCube中微子天文台的延伸,将具有三个主要组成部分:深冰中的光学阵列,浅冰和积雪中的大型无线电阵列以及光学阵列上方的表面探测器。因此,IceCube-Gen 2不仅是PeV中微子的优秀探测器,而且还构成了测量宇宙射线空气簇射的独特设置,其中在表面测量电磁分量和低能μ子,并在冰中测量高能μ子。至于冰立方目前的表面阵列,冰顶正在进行的增强,我们预见了第二代表面阵列的高闪烁和无线电探测器的组合,旨在提高空气淋浴的测量精度。科学目标是多方面的:对宇宙射线通量和质量组成的现场测量,以及对强子相互作用模型的更彻底测试,将提高对在冰中检测到的μ子和大气中微子的理解,特别是关于瞬发μ子。此外,表面阵列为冰中探测器提供了宇宙射线否决权,并有助于光学和无线电阵列的校准。最后但并非最不重要的是,表面阵列将在从银河系到河外源过渡的能量范围内对宇宙射线科学做出重大贡献。光子和宇宙射线各向异性在多PeV能量的灵敏度增加提供了一个机会,以解决最具活力的银河系宇宙射线的起源之谜,并将服务于冰立方的多信使任务。

英文摘要:

IceCube-Gen2, the extension of the IceCube Neutrino Observatory, will feature three main components: an optical array in the deep ice, a large-scale radio array in the shallow ice and firn, and a surface detector above the optical array. Thus, IceCube-Gen2 will not only be an excellent detector for PeV neutrinos, but also constitutes a unique setup for the measurement of cosmic-ray air showers, where the electromagnetic component and low-energy muons are measured at the surface and high-energy muons are measured in the ice. As for ongoing enhancement of IceCube's current surface array, IceTop, we foresee a combination of elevated scintillation and radio detectors for the Gen2 surface array, aiming at high measurement accuracy for air showers. The science goals are manifold: The in-situ measurement of the cosmic-ray flux and mass composition, as well as more thorough tests of hadronic interaction models, will improve the understanding of muons and atmospheric neutrinos detected in the ice, in particular, regarding prompt muons. Moreover, the surface array provides a cosmic-ray veto for the in-ice detector and contributes to the calibration of the optical and radio arrays. Last but not least, the surface array will make major contributions to cosmic-ray science in the energy range of the transition from Galactic to extragalactic sources. The increased sensitivities for photons and for cosmic-ray anisotropies at multi-PeV energies provide a chance to solve the puzzle of the origin of the most energetic Galactic cosmic rays and will serve IceCube's multimessenger mission.

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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