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arXiv 2409.09109astro-ph.HEastro-ph.IMastro-ph.SR
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COSINUS对下一次银河系核心坍缩超新星的中微子通量灵敏度

Neutrino flux sensitivity to the next galactic core-collapse supernova in COSINUS

G. Angloher, M. R. Bharadwaj, M. Cababie, I. Colantoni, I. Dafinei, A. L. De Santis, N. Di Marco, L. Einfalt, F. Ferella, F. Ferroni, S. Fichtinger, A. Filippon… 展开作者

G. Angloher, M. R. Bharadwaj, M. Cababie, I. Colantoni, I. Dafinei, A. L. De Santis, N. Di Marco, L. Einfalt, F. Ferella, F. Ferroni, S. Fichtinger, A. Filipponi, T. Frank, M. Friedl, Z. Ge, M. Heikinheimo, M. N. Hughes, K. Huitu, M. Kellermann, R. Maji, M. Mancuso, L. Pagnanini, F. Petricca, S. Pirro, F. Pröbst, G. Profeta, A. Puiu, F. Reindl, K. Schaeffner, J. Schieck, P. Schreiner, C. Schwertner, K. Shera, M. Stahlberg, A. Stendhal, M. Stukel, C. Tresca, F. Wagner, S. Yue, V. Zema, Y. Zhu, G. Pagliaroli

AI总结:

本文研究了COSINUS暗物质实验对银河系核心坍缩超新星中微子的探测灵敏度,通过NaI晶体CEνNS探测和水罐切伦科夫探测,证明其可探测最远22kpc的超新星。

摘要:

虽然中微子在许多暗物质实验中被视为背景,但这些粒子为物理学提供了一条新的途径:探测核心坍缩超新星。超新星是标记大质量恒星死亡的极端高能、剧烈且复杂的事件。在坍缩过程中,恒星会在短时间内爆发出大量中微子。这些中微子携带了99%的释放能量,这使得对它们的探测对于理解超新星至关重要。本文阐述了COSINUS(下一代地下搜寻中观测到的信号特征的低温观测站),一个基于碘化钠(NaI)的暗物质搜寻实验,将如何对下一次银河系核心坍缩超新星具有灵敏度。该实验由两个独立的探测器组成,它们将分别对远距离和近距离超新星具有灵敏度。实验的内核将由作为闪烁量热器运行的NaI晶体组成,主要对中微子与Na和I原子核的相干弹性散射(CEνNS)具有灵敏度。低温探测器的低质量使该实验对1kpc以内的近距离超新星具有灵敏度且不会发生堆积。它们将看到来自200pc处超新星的多达数百个CEνNS事件。这些晶体位于一个圆柱形230T水罐的中心,水罐配备30个光电倍增管。该水罐既作为被动屏蔽又作为主动屏蔽,能够探测由环境和宇宙成因放射性所产生的高能带电粒子引发的切伦科夫辐射。发生在银河系中心(10kpc)附近的超新星将容易被探测到,产生约60个可测量事件,而水罐对最远22kpc的超新星具有3σ灵敏度,可看到约10个事件。本文表明,即使没有专门优化,现代暗物质实验也将在探测下一次银河系核心坍缩超新星的多信使工作中发挥其作用。

英文摘要:

While neutrinos are often treated as a background for many dark matter experiments, these particles offer a new avenue for physics: the detection of core-collapse supernovae. Supernovae are extremely energetic, violent and complex events that mark the death of massive stars. During their collapse stars emit a large number of neutrinos in a short burst. These neutrinos carry 99\% of the emitted energy which makes their detection fundamental in understanding supernovae. This paper illustrates how COSINUS (Cryogenic Observatory for SIgnatures seen in Next-generation Underground Searches), a sodium iodide (NaI) based dark matter search, will be sensitive to the next galactic core-collapse supernova. The experiment is composed of two separate detectors which will be sensitive to far and nearby supernovae. The inner core of the experiment will consist of NaI crystals operating as scintillating calorimeters, mainly sensitive to the Coherent Elastic Scattering of Neutrinos (CE$ν$NS) against the Na and I nuclei. The low mass of the cryogenic detectors gives the experiment a sensitivity to close supernovae below 1kpc without pileup. They will see up to hundreds of CE$ν$NS events from a supernova happening at 200pc. The crystals reside at the center of a cylindrical 230T water tank, instrumented with 30 photomultipliers. This tank acts as a passive and active shield able to detect the Cherenkov radiation induced by impinging charged particles from ambient and cosmogenic radioactivity. A supernova near the Milky Way Center (10kpc) will be easily detected inducing $\sim$60 measurable events, and the water tank will have a 3$σ$ sensitivity to supernovae up to 22kpc, seeing $\sim$10 events. This paper shows how, even without dedicated optimization, modern dark matter experiments will also play their part in the multi-messenger effort to detect the next galactic core-collapse supernova.

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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