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
• 负责人: Oser, Scott
• 金额: $ 18.71万
• 依托单位: University of British Columbia
• 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=612399
• 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.

在本申请中，我们请求提供为期三年的拨款，以支持2014-2017财年期间T2K协作的加拿大部分的活动。T2K是一项长基线中微子实验，将来自J-PARC(日本质子加速器研究综合体)的中微子束发送到295公里外的神冈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Muon中微子束中的出现以及当它们振荡成不可观察的味道时Muon中微子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特别敏感。2006年4月为加拿大T2K项目提供了为期三年的探测器建造和运行赠款。这家加拿大集团负责实验的主要部分：用于离轴近探测器的时间投影室(TPC)和细粒度探测器(FGD)，以及使用光学跃迁辐射(OTR)的生产目标前面的主要质子束监视器。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是第一个确定在长基线的Muon中微子束中出现电子中微子的实验，也是世界上测量theta-23最好的实验。未来几年的测量将开始探索轻子部门可能的CP破坏，以及显着改进对其他中微子混合参数的测量。加拿大T2K成员正在领导几项中央分析工作，并为分析近探测器数据、超级神冈德束数据和光束线分析做出贡献。T2K预计至少再运营五年。这笔运营补助金将用于资助研究助理、研究生、旅费和由加拿大集团出资的探测器维护费用。