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: $ 71.61万
• 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: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=694971
• 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) 拥有所有粒子物理设施中最高的直接能量范围，加拿大在 ATLAS 合作中的核心作用使我们在运行初始阶段发现希格斯玻色子后始终处于国际粒子物理的前沿。 (运行 1) 和长达两年的关闭期以改进加速器和探测器，大型强子对撞机在 2015 年春季“运行 2”开始时恢复运行，碰撞能量有所增加13 TeV 的加速器一直运行得非常好，碰撞强度（光度）达到并超过了设计规范。虽然希格斯玻色子的发现是一项了不起的成就，但这只是冰山一角。 ATLAS 和 LHC 的潜在物理影响范围，它们从一开始就被设计为探测 TeV 尺度的新物理特征，从而可以“稳定”真空并解决标准模型的缺陷。充分发挥 ATLAS 的潜力需要更多的数据，从而需要更高的碰撞强度，这意味着需要进一步升级加速器和探测器，并对 ATLAS 记录的质子-质子碰撞数据进行复杂的分析。******三年期该提案涵盖的时期对应于Run 2的最后一年，以及“Long Shutdown 2”（LS2）的两年，在此期间将对大型强子对撞机进行进一步改进，以增加亮度，并且加拿大在其中发挥主导作用的 ATLAS 探测器的“第一阶段”升级将完成并安装，我们还在准备探测器的“第二阶段”升级，这对于高亮度运行是必要的。 LHC 将于 2026 年启动。第二次运行的完成将提供大量高能数据样本，这些样本将成为未来几年丰富科学产出的基础，其形式是寻找标准模型之外的物理现象，提高对宇宙的理解。希格斯第一阶段和第二阶段升级工作是对 ATLAS 未来的投资，并为学生提供了参与设计、构建和测试的越来越难得的机会。在本提案涵盖的期间，通过对 Run-2 数据的分析以及 ATLAS 升级的工作，我们将确保我们从过去对 ATLAS 和 LHC 的重大投资中获益，并确保接下来两个的未来考虑到操作和 LS2 活动的时间表，这一请求的重点是探测器操作和升级，以及计算操作和物理分析，其中包括博士后研究员和学生的支持、旅行。前往 CERN 参加专家活动和物理会议，为 CERN 工作人员提供 CERN 生活费，以及参加物理会议和会议的差旅费。