Canadian participation in the T2K neutrino oscillation experiment

东海到神冈（T2K）中微子振荡实验是一个长基线中微子实验，它将来自日本东海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。该项目的目标是研究一束μ子中微子的振荡，以确定它们在传输过程中转化为其他类型中微子的频率。这些测量的目的是确定中微子混合角theta-13，并在中微子混合矩阵中寻找可能的非零cp违反相。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，实验从2010年初开始成功采集数据。加拿大T2K成员领导了几个中央分析工作，并对近探测器数据、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。加拿大T2K小组由19名资深科学家、9名博士后和14名研究生组成。

The Tokai to Kamioka (T2K) neutrino oscillation experiment is a long-baseline neutrino experiment that sends a neutrino beam from J-PARC (Japan Proton Accelerator Research Complex, in Tokai, Japan) to the Super-Kamiokande water Cerenkov detector, located 295km away in Kamioka. The goal of the project is to study the oscillations of a beam of muon neutrinos to determine how often they transform into other types of neutrinos while in transit. These measurements aim to determine the neutrino mixing angle theta-13 and to search for a possible non-zero CP-violating phase in the neutrino mixing matrix. 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 has successfully been taking data since early 2010. Canadian T2K members are leading several central analysis efforts and ontribute to analysis of near detector data, Super-Kamiokande beam data, and beamline analysis. T2K anticipates operating for at least five more years. The Canadian T2K group consists of 19 senior scientists, 9 postdoctoral fellows, and 14 graduate students.