Canadian participation in the T2K neutrino oscillation experiment

加拿大参与T2K中微子振荡实验

• 批准号: SAPPJ-2014-00031-6
• 负责人: Tacik, Roman
• 金额: $ 9.38万
• 依托单位: University of Regina
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Project
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=612405
• 关键词: Canadian; participation; T2K; neutrino; oscillation

In this application we request a three-year grant to support the activities of the Canadian part of the T2K collaboration during the FY2014-2017 period. T2K is a long-baseline neutrino experiment that sends a neutrino beam from J-PARC (Japan Proton Accelerator Research Complex) to the Super-Kamiokande water Cerenkov detector located 295km away in Kamioka. The goal of the project is to precisely measure neutrino oscillation parameters by observing both the appearance of electron neutrinos in a muon neutrino beam and the disappearance of muon neutrinos as they oscillate into unobservable flavours. T2K has particular sensitivity to the neutrino mixing angles theta-13, theta-23, and delta-CP, as well as the atmospheric neutrino mass splitting dm^2_32. A three year detector construction and operation grant for the Canadian T2K project was funded in April 2006. The Canadian group has taken responsibility for major parts of the experiment: the time projection chambers (TPC) and fine-grained detectors (FGD) for the off-axis near detector, and the primary proton beam monitor in front of the production target using optical transition radiation (OTR). Detector construction and commissioning was completed in 2009, and the experiment began taking data in 2010. In 2013 T2K was the first experiment to definitively establish the electron neutrino appearance in a long-baseline beam of muon neutrinos, and also has the world's best measurements of theta-23. Measurements over the next several years will begin to probe possible CP violation in the leptonic sector as well as to significantly improve measurements of other neutrino mixing parameters. Canadian T2K members are leading several central analysis efforts and contribute to analysis of near detector data, Super-Kamiokande beam data, and beamline analysis. T2K anticipates operating for at least five more years. The operation grant will support research associates, graduate students, travel costs, and the maintenance costs of the detectors contributed by the Canadian group.

在这份申请中，我们要求一笔为期三年的赠款，以支持2014-2017财年期间T2K合作的加拿大部分的活动。T2K是一个长基线中微子实验，它将来自J-PARC（日本质子加速器研究中心）的中微子束发送到位于神冈295公里外的超级神冈水切伦科夫探测器。该项目的目标是通过观察电子中微子在μ介子中微子束中的出现和μ介子中微子振荡成不可观察的风味时的消失来精确测量中微子振荡参数。T2K对中微子混合角theta-13， theta-23和delta-CP以及大气中微子质量分裂dm^2_32具有特别的敏感性。2006年4月为加拿大T2K项目提供了一项为期三年的探测器建设和运行拨款。加拿大小组负责实验的主要部分：时间投影室（TPC）和离轴近探测器的细粒度探测器（FGD），以及使用光跃迁辐射（OTR）在生产目标前面的主质子束监测器。探测器的建造和调试于2009年完成，实验于2010年开始采集数据。2013年，T2K是第一个在长基线介子中微子束中确定电子中微子外观的实验，也是世界上最好的theta-23测量值。在接下来的几年里，测量将开始探测轻子扇区中可能的CP违和，并显著改进对其他中微子混合参数的测量。加拿大T2K成员领导了几个中央分析工作，并为近探测器数据、超级神冈光束数据和光束线分析做出了贡献。T2K预计至少再运营五年。这笔经费将用于资助研究人员、研究生、差旅费和加拿大小组提供的探测器的维护费用。