IceCube data analysis and detector upgrade developments

IceCube数据分析和探测器升级开发

• 批准号: SAPPJ-2020-00039
• 负责人: Moore, Roger
• 金额: $ 13.84万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Project
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718076
• 关键词: IceCube; data; analysis; detector; upgrade

The IceCube Neutrino Observatory, located at South Pole Station Antarctica, is the world's largest neutrino detector. Optimized for neutrino energies between a few hundred GeV and tens of PeV, it is the premier facility for the study of high-energy neutrinos and indirect cosmological dark matter searches. In 2008 the original design for IceCube was augmented with a low-energy extension, called DeepCore, that reduced the threshold for the observatory to approximately 10 GeV and initiated an Antarctic-based particle physics program focused on neutrino oscillation measurements and indirect dark matter searches. The IceCube and DeepCore detector arrays are operating with greater than 99% efficiency and the data analyses are reaching full sensitivity with high impact results including world-leading indirect dark matter searches, globally competitive neutrino oscillation measurements and searches for new physics using high energy neutrino interactions. Building on these successes, the IceCube Upgrade was recently approved for funding. This adds seven strings of densely packed detectors that will greatly enhance the neutrino oscillation measurements and extend the indirect dark matter searches to lower masses. Future upgrade plans include IceCube-Gen2 which targets the highest energy neutrinos leading to greater sensitivity to new physics Beyond the Standard Model. The Canadian IceCube program is lead by five faculty members at the University of Alberta, Queen's University and Simon Fraser University. This is a leading group within the collaboration in all aspects of the on-going data analyses for the full energy range accessible by the detector. The group's activities include novel developments in calibrations, new reconstruction algorithms and advanced techniques in the Monte Carlo simulations, designed to reduce the primary detector systematic uncertainties. Our high-level physics analyses are primarily focused on measurements of atmospheric neutrino oscillations near 20 GeV, the atmospheric neutrino flux, indirect dark matter searches, and searches for new physics using high-energy neutrinos. Recognition by the international IceCube collaboration of the Canadian contributions has come through current appointments of Yanez as co-convener of the Neutrino Oscillations working group and Moore as the co-leader of the TFT board. In addition, our PDF Hignight co-convenes the Systematics and Reconstruction working group. Requested in the proposal is funding to maintain the current core IceCube analysis activities, to continue the development of the future detector upgrades. The current IceCube Canada groups include an NSERC supported postdoctoral fellow, 2 continuing PhD graduate students, 1 MSc student and 3 undergraduate researchers. Support for additional graduate and undergraduate researchers is requested as well as travel expenses, to facilitate the group's role in this unique international collaboration, and common fund contributions.

冰立方中微子天文台位于南极南极站，是世界上最大的中微子探测器。它的中微子能量在几百GeV到数十PeV之间进行了优化，是研究高能中微子和间接宇宙暗物质搜索的首选设备。2008年，冰立方的最初设计增加了一个名为DeepCore的低能量扩展装置，将天文台的门槛降低到大约10GeV，并启动了一个以南极为基础的粒子物理计划，专注于中微子振荡测量和间接暗物质搜索。 IceCube和DeepCore探测器阵列的运行效率超过99%，数据分析达到了完全灵敏的高度撞击结果，包括世界领先的间接暗物质搜索、具有全球竞争力的中微子振荡测量，以及使用高能中微子相互作用搜索新物理。在这些成功的基础上，IceCube升级最近获得了资金批准。这增加了七串密集排列的探测器，将极大地增强中微子振荡测量，并将间接暗物质搜索扩展到较低质量。未来的升级计划包括IceCube-Gen2，它针对的是最高能量的中微子，导致对标准模型以外的新物理更敏感。 加拿大冰立方项目由艾伯塔大学、女王大学和西蒙·弗雷泽大学的五名教职员工领导。这是在探测器可获得的全部能量范围内正在进行的数据分析的所有方面的合作中的一个领导小组。该小组的活动包括校准方面的新发展、新的重建算法和蒙特卡罗模拟中的先进技术，旨在减少主要探测器的系统不确定性。我们的高层物理分析主要集中在20GeV附近大气中微子振荡的测量，大气中微子通量，间接暗物质搜索，以及使用高能中微子搜索新物理。国际冰立方合作承认了加拿大的贡献，目前任命亚内兹为中微子振荡工作组的联合召集人，摩尔为TFT董事会的联合负责人。此外，我们的PDF Hignight共同召集了系统学和重建工作组。 提案中要求提供资金，以维持目前的核心冰立方分析活动，继续开发未来的探测器升级。目前的IceCube加拿大小组包括一名NSERC支持的博士后研究员、2名继续攻读博士研究生、1名硕士学生和3名本科生。要求为更多的研究生和本科生研究人员提供支持，以及旅费，以促进该小组在这一独特的国际合作中的作用，并提供共同基金捐款。