Beam Monitoring and High-Level Trigger Equipment for the Belle II Experiment

Belle II 实验的光束监测和高级触发设备

• 批准号: SAPEQ-2018-00005
• 负责人: Warburton, Andreas
• 金额: $ 5.46万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Research Tools and Instruments
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=668191
• 关键词: Beam; Monitoring; Level; Trigger; Equipment

The Belle II experiment will be located at the SuperKEKB e+e- collider at the KEK laboratory in***Tsukuba, Japan. It is the successor to the successful Belle and BaBar experiments, which were cited***for their contributions to the phenomenon of CP violation in the 2008 Nobel Prize in Physics. The***primary physics goal of Belle II is to search for evidence of new physics through a wide range of***measurements that are sensitive to the presence of heavy virtual particles, and that can be precisely***predicted in the Standard Model. These measurements could include CP violation and other***asymmetries, rare decays, or forbidden decays.******The mass reach of these measurements can exceed that of the direct searches by ATLAS and CMS. If***new physics is found at the LHC, Belle II can explore its nature by looking for a pattern of deviations***from the Standard Model in ways that are not feasible at a hadron collider. If new physics is not***discovered at the LHC, Belle II measurements will provide critical guidance towards beyond***the-standard-model theories by either discovering new phenomena and deviations from Standard***Model expectations, or by excluding hypothesized models of new physics. Belle II will also be sensitive***to the direct production of new light particles, including those predicted by dark sector models of dark***matter, or additional Higgs particles, particles that will be difficult to detect at the LHC. The experiment***will also continue the exploration of the weak force and CP violation, a program successfully followed***by BaBar and Belle.******The funds requested will enable the Canadian group to complete its responsibilities to construct permanent***hardware for fast real-time SuperKEKB-beam background monitoring. Four LYSO-crystal radiation monitors***will be mounted orthogonally to the collider plane in the electromagnetic calorimeter shielding, and***equipment will be provided for the installation of plastic scintillator detectors to be mounted outside the final***focussing-magnet cryostats. Funds are also requested for equipment to further complete a contribution to***the Belle II high-level trigger (HLT), which receives detector data in real time, rapidly analyses it, and***determines which e+e- collisions to store permanently offline. The background-radiation and HLT equipment***are necessitated by the phased commissioning of Belle II during 2018-19, requiring completion of***radiation-monitor coverage and increased trigger-processing capacity, respectively.******This research will further worldwide particle-physics knowledge of the fundamental constituents of***matter in our Universe. The Canadian designed and built hardware in this request will constitute a part***of the Belle II experiment and will provide unique training of highly qualified personnel, individuals with***enhanced capacity to contribute to future Canadian knowledge acquisition and economically beneficial***innovation in the private and public sectors.

Belle II实验将在日本筑波的KEK实验室的SuperKEKB e+e对撞机上进行。它是Belle和Babar成功实验的继任者，这两个实验因在2008年诺贝尔物理学奖上对CP破坏现象的贡献而被*表彰。Belle II的主要物理目标是通过对重虚拟粒子的存在敏感的大范围测量来寻找新物理的证据，这些测量可以在标准模型中准确地预测。这些测量可能包括CP破坏和其他*不对称、罕见衰变或禁止衰变。*这些测量的质量范围可能超过ATLAS和CMS的直接搜索。如果在大型强子对撞机上发现了*新物理，贝勒二号可以通过寻找偏离标准模型*的模式来探索它的本质，而这种模式在强子对撞机上是不可行的。如果在大型强子对撞机上没有发现新的物理，Belle II的测量将通过发现新的现象和偏离标准*模型的期望，或者通过排除新物理的假设模型，来为超越标准模型的理论提供关键的指导。贝勒二号还将对新轻粒子的直接产生非常敏感，包括暗物质暗扇区模型预测的新轻粒子，或附加的希格斯粒子，这些粒子在大型强子对撞机上很难检测到。实验*还将继续探索弱力和CP破坏，Babar和Belle*成功地遵循了这一计划。*所申请的资金将使这家加拿大集团能够完成其责任，为快速实时的SuperKEKB束流背景监测建造永久性的*硬件。四个溶晶辐射监测器*将垂直安装在电磁量热计屏蔽中的对撞机平面上，并将提供*设备安装塑料闪烁体探测器，安装在最终的*聚焦磁铁低温恒温器之外。还需要为设备提供资金，以进一步完成对*Belle II高级触发器(HLT)的贡献，HLT实时接收探测器数据，快速分析数据，并*确定将哪些e+e碰撞永久离线存储。背景辐射和HLT设备*是百丽二号在2018-19年分阶段投入使用所必需的，需要分别完成*辐射监测覆盖和增加触发处理能力。*这项研究将在世界范围内进一步了解我们宇宙中*物质的基本成分。本申请中的加拿大设计和制造的硬件将构成百丽II实验的一部分*，并将为高素质人员提供独特的培训，这些人员具有*增强的能力，为加拿大未来的知识获取和私营和公共部门的经济利益*创新做出贡献。