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-2017-00025-7
• 负责人: Bhadra, Sampa
• 金额: $ 11.59万
• 依托单位: York University
• 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=617913
• 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.

该提案支持加拿大非常成功地参与 T2K 长基线实验，该实验在 J-PARC 加速器实验室产生强烈的 μ 子（反）中微子束，并引导至 295 公里外的 Super-Kamiokande 探测器，以研究它们向中微子振荡产生的其他中微子味道的转变。加拿大成员是这项工作的创始成员，他们在实验设计中引入了基本要素，并贡献了光学跃迁辐射探测器、细粒度探测器和时间投影室等关键组件，这些组件构成了近探测器跟踪系统的核心。在 TRUMF 和 ComputeCanada 的支持下，加拿大人提供了其他关键贡献，例如用于近探测器工作的网络、慢速控制和数据库、大规模计算和数据访问、Super-Kamiokande 的新重建框架以及光束线修复和维护。 T2K 在中微子研究方面取得了良好的科学成就，包括发现 μ 子中微子到电子中微子的出现、对中微子混合角 theta23 的最精确测量，以及现在最灵敏的中微子与反中微子振荡不对称性探测器，这可能为宇宙为何由物质主导提供线索。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。