Canadian Participation in the T2K Long Baseline Neutrino Experiment

加拿大参与 T2K 长基线中微子实验

• 批准号: SAPPJ-2017-00025
• 负责人: tanaka, hirohisa
• 金额: $ 11.84万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Project
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=617906
• 关键词: Canadian; Participation; T2K; Long; Baseline

This proposal supports the highly successful Canadian involvement in the T2K long baseline experiment, where an intense muon (anti)neutrino beam is produced at the J-PARC accelerator laboratory and directed 295 km away to the Super-Kamiokande detector to study their transition to other neutrino flavours arising from neutrino oscillations. Canadian members were founding members of the effort, introducing fundamental elements to the design of the experiment, and contributing key components such as the optical transition radiation detector, the fine-grained detectors and time projection chambers that form the core of the tracking system for the near detectors. With support from TRIUMF and ComputeCanada, Canadians provide other critical contributions such as the network, slow control, and databases for the near detector effort, large scale computing and data access, a new reconstruction framework for Super-Kamiokande, and beam line repair and maintenance. T2K has established strong track record of scientific achievements in the study of neutrinos including the discovery of the muon neutrino to electron neutrino appearance, the most precise measurements of the neutrino mixing angle theta23, and now the most sensitive probes of asymmetries in the neutrino vs. antineutrino oscillations which may provide clues on why the universe is matter-dominated. These scientific issues are among the most urgent facing particle physics today.

这一提议支持加拿大非常成功地参与T2 K长基线实验，在J-PARC加速器实验室产生强烈的μ子（反）中微子束，并将其引向295公里外的超级神冈探测器，以研究它们向中微子振荡产生的其他中微子味的转变。加拿大成员是这项工作的创始成员，他们为实验设计引入了基本要素，并提供了关键部件，如光学跃迁辐射探测器、细粒度探测器和时间投影室，这些部件构成了近距离探测器跟踪系统的核心。在TRIUMF和ComputeCanada的支持下，加拿大人提供了其他重要贡献，如网络，慢速控制和近探测器工作的数据库，大规模计算和数据访问，超级神冈的新重建框架，以及光束线维修和维护。T2 K在中微子研究方面取得了很好的科学成就，包括发现了μ中微子到电子中微子的外观，最精确的中微子混合角θ 23的测量，以及现在最灵敏的中微子与反中微子振荡的不对称性探测器，这可能为宇宙为什么是物质主导提供线索。这些科学问题是当今粒子物理学面临的最紧迫的问题之一。