The High-Luminosity Upgrade of the CMS Detector

欧洲核子研究中心的大型强子对撞机(LHC)在可预见的未来将是世界上能量最高的粒子加速器，也是唯一能够研究基础物理中一些最优先主题的设施。英国已经对CMS探测器的设计、建造和运行做出了重大的长期承诺。CMS探测器是LHC的两个通用探测器之一。LHC的运行将至少持续到2035年，为了提供有用的统计数据，两个加速器综合体的性能要求都在不断提高。反过来，CMS探测器将需要进行重大和全面的升级，以便在更恶劣的条件下保持性能。为了让大型强子对撞机的科学回归长期持续下去，本提案中描述的升级是强制性的。我们提议从2019年开始实施一个技术上雄心勃勃的五年计划，该项目将为CMS提供最先进的跟踪、热量测量和触发能力。这些改进将允许记录的数据集增加数量级，允许测量希格斯耦合和自耦合，并极大地增强了对标准模型以外的物理的敏感性。

The Large Hadron Collider (LHC) at CERN will be the world's highest energy particle accelerator for the foreseeable future, and the only facility capable of investigating some of the highest priority topics in fundamental physics. The UK has made a substantial long-term commitment to the design, construction and operation of the CMS detector, one of the two general-purpose detectors at the LHC.LHC operation will continue until at least 2035, with ever-increasing performance required from both the accelerator complex in order to provide useful statistical reach. The CMS detector will in turn require significant and comprehensive upgrades in order to maintain performance in the presence of much harsher conditions. The upgrades described in this proposal are mandatory to allow scientific return from the LHC to continue in the long term.We propose a technically ambitious five-year project from 2019 that will deliver state-of-the-art tracking, calorimetry and trigger capabilities for CMS. These improvements will permit an order of magnitude increase in the recorded data set, allowing measurement of Higgs couplings and self-couplings, and greatly enhanced sensitivity to physics beyond the Standard Model.