The ATLAS Experiment at the Large Hadron Collider

大型强子对撞机上的 ATLAS 实验

• 批准号: SAPPJ-2018-00016
• 负责人: Krieger, Peter
• 金额: $ 109.28万
• 依托单位: University of Toronto
• 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=718923
• 关键词: ATLAS; Experiment; Large; Hadron; Collider

CERN's Large Hadron Collider (LHC) has the highest direct energy reach of any particle physics facility, and Canada's central role in the ATLAS collaboration keeps us at the forefront of international particle physics. Following the discovery of the Higgs boson during the initial phase of operations (Run 1) and a two-year long shutdown period for improvements to the accelerator and detector, the LHC resumed operation with the start of "Run 2" in spring 2015, at an increased collision energy of 13 TeV. The accelerator has been running exceptionally well, with the design specifications for the collision intensity (luminosity) met and then surpassed in June 2016. While the discovery of the Higgs boson was a remarkable achievement, it only scratches the surface of the potential physics reach of ATLAS and the LHC, which were designed from the outset to probe for signatures of new physics at the TeV scale that could "stabilize" the vacuum and address deficiencies of the Standard Model. Achieving the full potential of ATLAS requires more data and thus higher collision intensities, implying the need for further accelerator and detector upgrades, along with sophisticated analyses of the proton-proton collision data recorded by ATLAS. The three-year period covered by this proposal corresponds to the final year of Run 2, and the two years of “Long Shutdown 2” (LS2) during which further improvements will be made to the LHC, to increase the luminosity, and “Phase-1” upgrades of the ATLAS detector, in which Canada plays a leading role, will be completed and installed. We are also preparing for “Phase-2” upgrades of the detector that will be necessary for operation at the High-Luminosity LHC starting in 2026. The completion of Run 2 will provide a large high-energy data sample that will form the basis of a rich scientific output over the coming years, in the form of searches for physics beyond the Standard Model, improved understanding of the Higgs boson, and precision measurements of other Standard Model processes. Work on the Phase-1 and Phase-2 upgrades is an investment in the future of ATLAS, and presents an increasingly rare opportunity for students to be involved in the design, construction and testing of new detector components. For the period covered by this proposal, via work on analysis of the Run-2 data, and work on ATLAS upgrades, we are ensuring that we reap the benefits of our significant past investments in ATLAS and the LHC, and ensuring its future for the next two decades, all while training the next generation of Canadian particle physicists. Given the schedule for operations and LS2 activities, this request is focused on detector operations and upgrades, as well as computing operations and physics analysis. It includes postdoctoral fellow and student support, travel to CERN for expert activities and physics meetings, CERN subsistence for CERN-based personnel, and travel for physics meetings and conferences.

CERN的大型强子对撞机（LHC）具有任何粒子物理设施的最高直接能量范围，而加拿大在ATLAS协作中的核心作用使我们处于国际粒子物理的最前沿。在最初的运营阶段（运行1）和两年长的关闭期间发现了希格斯玻色子以改进加速器和检测器之后，LHC恢复了2015年春季“运行2”的运行，碰撞能量增加了13 TEV。加速器的运行状态非常出色，碰撞强度（亮度）的设计规格达到了2016年6月，然后在2016年6月生存。虽然发现希格斯玻色子是一个了不起的成就，但它只是划痕的，它只能从Atlas和LHC的潜在物理物理范围划痕，从Atlas和LHC的潜在物理范围中，这是稳定的，这是稳定的，可以稳定范围。地址标准模型的缺陷。实现地图集的全部潜力需要更多数据，因此需要更高的碰撞强度，这意味着需要进一步的加速器和检测器升级，以及对Atlas记录的Proton-Proton碰撞数据的复杂分析。 该提案所涵盖的三年期对应于运行2的最后一年，而“长时间关闭2”（LS2）的两年将对LHC进行进一步的改进，以提高Atlas探测器的亮度，并在其中扮演加拿大探测器的“阶段1”升级。我们还准备为探测器的“ 2阶段”升级做准备，这对于从2026年开始在高亮度LHC上运行所需的必要条件。运行2的完成将提供一个大型的高能数据样本，这将构成未来几年的丰富科学输出的基础，在标准模型中，对物理的搜索形式进行了改进的型号，对型号进行了对高级型号的了解，并精确地了解了其他标准的boson和其他型号。在第1阶段和第二阶段升级方面的工作是对Atlas的未来的投资，并为学生提供了越来越难得的机会参与新探测器组件的设计，构建和测试。在该提案所涵盖的时期，通过分析Run-2数据并进行Atlas升级的工作，我们正在确保我们在Atlas和LHC上获得了过去的重大投资的好处，并确保了未来二十年的未来，所有这些都在培训下一代加拿大粒子物理学家的同时。考虑到操作和LS2活动的时间表，此请求集中在探测器操作和升级以及计算操作和物理分析上。它包括博士后研究员和学生支持，前往CERN参加专家活动和物理会议，基于CERN的人员的CERN生存以及进行物理会议和会议旅行。