IceCube data analysis and detector upgrade developments

位于南极洲南极站的冰立方中微子天文台是世界上最大的中微子探测器。它的中微子能量在几百GeV到几十PeV之间，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，冰立方的原始设计被称为“深核”（DeepCore）的低能扩展部分所增强，它将观测站的阈值降低到大约10 GeV，并启动了一个以南极为基础的粒子物理项目，该项目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%，数据分析达到了全灵敏度，并获得了高影响结果，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和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，冰立方升级项目最近获得了资助。这增加了七串密集排列的探测器，将大大增强中微子振荡测量，并将间接暗物质搜索扩展到更低质量。未来的升级计划包括冰立方- gen2，它的目标是最高能量的中微子，从而对超越标准模型的新物理具有更高的灵敏度。加拿大冰立方项目由阿尔伯塔大学、女王大学和西蒙弗雷泽大学的五名教员领导。这是一个领导小组，在合作的各个方面进行正在进行的数据分析，为探测器所能获得的全部能量范围。该小组的活动包括校准的新发展，新的重建算法和蒙特卡罗模拟的先进技术，旨在减少主探测器系统的不确定性。我们的高级物理分析主要集中在20 GeV附近的大气中微子振荡测量，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。国际冰立方合作对加拿大贡献的认可是通过目前任命Yanez为中微子振荡工作组的联合召集人，Moore为TFT董事会的联合领导人。此外，我们的PDF重点会议还共同召集了系统学和重建工作组。该提案要求提供资金，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，冰立方加拿大小组包括一名NSERC支持的博士后，两名在读博士研究生，一名硕士研究生和三名本科生。为了促进该小组在这一独特的国际合作中发挥作用，并提供共同基金捐款，还要求支持更多的研究生和本科生研究人员以及旅费。

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.