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

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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.