Upgrading the ATLAS Experiment at the CERN LHC

升级 CERN LHC 的 ATLAS 实验

• 批准号: SAPEQ-2014-00018
• 负责人: McPherson, Robert
• 金额: $ 41.89万
• 依托单位: TRIUMF
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Research Tools and Instruments
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=567996
• 关键词: Upgrading; ATLAS; Experiment; CERN; LHC

With the observation of a Higgs boson, the future physics program with ATLAS at the CERN Large Hadron Collider is coming into focus. In addition to precise measurements of the couplings and other properties of this newly discovered particle, the motivation for new TeV-scale electroweak physics to stabilize the Higgs vacuum remains strong. The future LHC program was affirmed as the top priority of European particle physics in recent strategic planning, and the future of LHC and ATLAS operations is secure. The ATLAS detector requires upgrades to operate at the increasing energy and rates expected in the coming years, and maintaining Canadian involvement in ATLAS includes Canadian participation in the ATLAS detector upgrade program. Canadian groups are currently focusing on two near-term “phase 1” ATLAS upgrades: (i) construction, testing and installation of high-rate thin gap chambers (sTGC) for the new muon end cap “small wheel” and (ii) design, assembly, testing and installation of upgraded front-end electronics for the liquid argon calorimeter (LAr) trigger. Both of these upgrades are designed to allow ATLAS operation with low lepton (muon and electron) trigger transverse momentum thresholds which are essential for the studies of the Higgs and searches for new electroweak-scale physics processes such as supersymmetry, extra dimensions, or more generally the physics that could explain the nature of dark matter and help stabilize the Higgs vacuum. The Canadian sTGC program involves building one third of the sTGC chambers planned for ATLAS, or 64 “quadruplets”. The three Canadians sites include: (1) TRIUMF-based cathode preparation and carbon/epoxy spray facility to ensure precise resistive layer coating of the chamber interior walls; (2) Carleton-based wire winding and chamber assembly facility to complete the quadruplets for gas and high-voltage application; (3) McGill-based chamber cosmic ray testing facility to ensure the Canadian-built chambers are fully functional before shipping them to CERN. A significant part of the laboratory infrastructure for chamber construction and testing is being purchased with the funds from the NSERC RTI award from the 2013 competition, along with material for prototype chamber construction. Most of the remainder of the laboratory infrastructure, plus initial chamber construction materials, would be purchased with funds from the NSERC RTI request in the 2014 competition, allowing us to ramp up our chamber production facilities on the timescale required by ATLAS. The Canadian LAr Electronics program involves designing, prototyping and building new front-end crate baseplanes for the Canadian-built Hadronic Endcap Calorimeter (HEC). We will also design, build and test several parts of the analogue electronics for the project, and purchase ADC components for the boards. The 2013 NSERC RTI award funds are being used for initial baseplane design and component testing, including verifying their neutron irradiation tolerance. The funds requested in the NSERC 2014 SAPES RTI competition would be used to construct and test a full-scale prototype of the HEC baseplane. The funds requested in this RTI application are required in Fiscal Year 2014-2015 for continued Canadian leadership in ATLAS upgrades. The majority of the capital and labour costs for project completion will be requested from the Canada Foundation for Innovation in the upcoming competition.

通过观察Higgs Boson，与Cern大型强子对撞机的未来物理计划开始焦点。除了对该新发现的粒子的耦合和其他特性的精确测量外，新的TEV规模电子物理学稳定Higgs真空的动机仍然很强。未来的LHC计划受到了欧洲粒子物理在最近的战略规划中的首要任务的影响，而LHC和Atlas运营的未来是安全的。地图集探测器需要升级以在未来几年的能源和预期的增加的能量和利率上运行，并且维持加拿大的参与ATLAS包括加拿大参与ATLAS检测器升级计划。加拿大团体目前正在关注两个近期的“ 1阶段”地图集：（i）用于新的Muon端盖“小车轮”和（ii）设计，组装，组装，测试和安装液体Argon Argon Calorimeter（LAR）固定的升级前端电子设备的高速薄间隙室（STGC）的构建，测试和安装。 Both of these upgrades are designed to allow ATLAS operation with low lepton (muon and electron) trigger transverse momentum thresholds which are essential for the studies of the Higgs and searches for new electronic-scale physics processes such as supersymmetry, extra dimensions, or more generally the physics that could explain the nature of dark matter and help stabilize the Higgs vacuum.加拿大STGC计划涉及建造计划为Atlas计划的STGC Chambers的三分之一，即64个“四翼”。加拿大三个站点包括：（1）基于凯旋的阴极制备和碳/环氧喷雾设施，以确保室内壁的精确电阻层涂层； （2）基于Carleton的电线绕组和腔室组件设施，以完成用于气体和高压应用的四倍体； （3）基于麦吉尔的室内宇宙射线测试设施，以确保加拿大建造的室在将其运送到CERN之前就完全有效。通过NSERC RTI奖的资金以及2013年竞赛的NSERC RTI奖，以及原型室内建设的材料，正在购买用于室内建设和测试的实验室基础设施的重要组成部分。其余的大部分实验室基础设施以及初始的室内建筑材料将在2014年竞赛中从NSERC RTI请求中购买，从而使我们能够在Atlas要求的时间表上加强我们的房间生产设施。加拿大LAR电子设备计划涉及为加拿大制造的Hadronic端盖量热计（HEC）设计，原型制作和建造新的前端板条板底板。我们还将为该项目设计，构建和测试模拟电子设备的几个部分，并为董事会购买ADC组件。 2013年NSERC RTI奖励基金用于初始底板设计和组件测试，包括验证其中性辐射公差。 NSERC 2014 SAPES RTI竞赛中要求的资金将用于构建和测试HEC Baseplane的全面原型。在2014-2015财政年度需要在此RTI申请中要求的资金，以在Atlas升级的加拿大持续领导层。将在即将举行的竞争中获得加拿大创新基金会的项目完成资本和劳动力成本。