Upgrades to the ATLAS Detector at the LHC

大型强子对撞机 (LHC) 的 ATLAS 探测器升级

• 批准号: SAPEQ-2017-00011
• 负责人: Krieger, Peter
• 金额: $ 14.06万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Research Tools and Instruments
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=616795
• 关键词: Upgrades; ATLAS; Detector; LHC

The funds requested here are in support of R&D efforts targeted at upgrades of the ATLAS detector at the Large Hadron Collider (LHC) at CERN, to ensure that the performance of the detector is maintained into the so-called High Luminosity LHC (HL-LHC) phase, when the luminosity (related to the beam intensity and collision rate) will be up to 7.5 times that for which the LHC and ATLAS were originally designed. The future LHC program has been affirmed as the top priority of European particle physics, and the future of LHC and ATLAS operations is secure. The ATLAS detector requires upgrades to operate at the increased rates expected at the HL-LHC, and maintaining Canadian involvement in ATLAS includes significant Canadian participation in this upgrade program. Collisions at the HL-LHC will result in a larger number of particles in ATLAS, with a corresponding increases in the amount of energy deposited. ATLAS was not designed for this environment, and some parts of it will need to be upgraded. The Inner Detector, which tracks the trajectories of charged particles, will need to entirely replaced. The new detector, called the ITk, will be built entirely of silicon detector modules. This will be an enormous effort, requiring the involvement of about half of the ATLAS institutes. The Liquid Argon Calorimeter, where the bulk of the Canadian contributions to the original detector were made, will also need some upgrades; to adapt to the higher rate, and the anticipated integrated radiation dose, the readout electronics will need to be entirely replaced. The Canadian group plans to be involved in the construction of the tracker upgrade (ITk) and to contribute to the upgrades of the Liquid Argon Calorimeter readout electronics. The electronics work would follow on naturally from Phase-I upgrade work that the group is already involved in. Funds are requested here for related R&D. About half of the request is for the purchase of components (silicon sensors, ASICs, electronics boards) for prototype ITk silicon-strip modules, and for equipment necessary for the production and testing of these modules. This is a required step in the ATLAS “site-validation” process being developed for the ITk module construction sites. The Canadian group plans to build 1500 of the roughly 18000 modules needed for the “Strips” portion of this detector, at two sites, one centred at Toronto and the other at TRIUMF in Vancouver. For site qualification, funds are requested here for the production and testing of 15 prototype modules at the western site. Support for the qualification of the eastern site was provided in last year’s competition. We additionally request funds for R&D related to the development of shipping containers for the silicon modules, and other test equipment for components and sensors, e.g. crates for long-term testing of the hybrid boards that form the first stage of the ITk readout.

这里要求的资金用于支持欧洲核子研究中心大型强子对撞机（LHC）ATLAS探测器升级的研发工作，以确保探测器的性能保持在所谓的高亮度LHC（HL-LHC）阶段，届时亮度（与光束强度和碰撞率有关）将达到LHC和ATLAS最初设计的7.5倍。未来的LHC计划已被肯定为欧洲粒子物理学的重中之重，LHC和ATLAS运行的未来是安全的。ATLAS探测器需要升级，以便以HL-LHC预期的更高速率运行，保持加拿大对ATLAS的参与包括加拿大对这一升级计划的重要参与。 在HL-LHC上的碰撞将导致ATLAS中大量的粒子，相应地增加了沉积的能量。ATLAS不是为这种环境设计的，它的某些部分需要升级。追踪带电粒子轨迹的内部探测器将需要完全更换。新的探测器称为ITk，将完全由硅探测器模块组成。这将是一项巨大的努力，需要大约一半的ATLAS研究所的参与。液体氩量热计是加拿大对原始探测器做出大部分贡献的地方，也需要进行一些升级;为了适应更高的速率和预期的综合辐射剂量，读出电子设备将需要完全更换。 加拿大集团计划参与跟踪器升级（ITk）的建设，并为液氩量热计读出电子设备的升级做出贡献。电子工作将自然地从该小组已经参与的第一阶段升级工作开始。在此申请相关研发经费。约一半的请求用于购买ITk硅带模块原型的组件（硅传感器、专用集成电路、电子板）以及生产和测试这些模块所需的设备。这是正在为ITk模块建造地点开发的ATLAS“地点验证”过程中的一个必要步骤。这个加拿大小组计划在两个地点建造大约18000个模块中的1500个，这是该探测器的“条带”部分所需的，一个位于多伦多，另一个位于温哥华的TRIUMF。关于场地资格鉴定，此处请求提供资金，用于在西部场地生产和测试15个原型模块。在去年的比赛中，为东部场地的资格提供了支持。此外，我们还申请资金用于研发硅模块运输容器以及其他组件和传感器测试设备，例如用于长期测试ITk读出第一阶段混合电路板的板条箱。