Neutriono oscillation with the T2K experiment

T2K 实验中的中子振荡

• 批准号: 311798-2007
• 负责人: Barbi, Mauricio
• 金额: $ 3.28万
• 依托单位: University of Regina
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=364427
• 关键词: Neutriono; oscillation; T2K; experiment

T2K is a long baseline neutrino oscillation project due to be commissioned in 2009 and located in Japan. The neutrino oscillation arises from the coupling between the neutrino flavors (tau neutrino, muon neutrino and electron neutrino) and the corresponding neutrino mass eigenstates. The probability P(nu[i] -> nu[j]) of neutrino oscillation between two neutrino flavors nu[i] and nu[j] depends on the corresponding mixing angle theta[ij] between these two neutrinos, where {i,j} runs over the three neutrino flavors, on the difference in the squares of the masses deltam-squared[ij] of the two neutrinos nu[i] and nu[j], on the energy E of the neutrino nu[i], and on the distance L between the source of the neutrino nu[i] and the detector apparatus. In the T2K experiment, the distance L is known and the energy E can be measured with high accuracy. The primary goal is to measure for the first time the mixing angle theta[13] by detecting the appearance of electron neutrinos from an initial beam of muon neutrinos produced 295 Km away at the Japan Proton Accelerator Research Complex (JPARC) facilities in Tokai.  The project also includes search for a non-zero CP-violating phase, and measurement of theta[23] and deltam-squared[23]. A near detector (ND280) located at 280 m from the proton-target interaction point will be used to measure the initial flux of muon neutrinos and to estimate sources of background to the electron neutrino appearance. The Canadian T2K group is responsible for the construction of several components of the ND280 detector, and NSERC has funded a 3-year grant (2006-2008) for this project. I have recently joined this group and, therefore, I am not a co-applicant in the T2K project grant application submitted in the last NSERC grant competition in 2005. In this proposal, I will be applying for a 2-year individual grant to allow me to synchronize my operating expenses with the existing T2K operating project grant. The proposal will be basically for support of HQP training and travel expenses, since the funds for R&D and other correlated tasks already exist through a NSERC-funded RTI grant for T2K.

T2 K是一个长基线中微子振荡项目，将于2009年投入使用，位于日本。中微子振荡产生于中微子味（τ中微子、μ中微子和电子中微子）与相应的中微子质量本征态之间的耦合。的概率P两个中微子味nu[i]和nu[j]之间的中微子振荡的（nu[i] -> nu[j]）取决于这两个中微子之间的相应混合角θ [ij]，其中{i，j}在三个中微子味上运行，取决于两个中微子nu[i]和nu[j]的质量Δ m-squared [ij]的平方差，取决于中微子nu[i]的能量E，以及中微子源nu[i]与探测器装置之间的距离L。在T2 K实验中，距离L是已知的，并且可以高精度地测量能量E。主要目标是通过检测295公里外的日本质子加速器研究中心（JPARC）设施产生的初始μ子中微子束中出现的电子中微子来首次测量混合角θ [13]。该项目还包括寻找非零CP破坏相位，以及测量θ [23]和Δ平方[23]。位于质子-靶相互作用点280米处的近探测器（ND 280）将用于测量μ子中微子的初始通量，并估计电子中微子外观的背景来源。加拿大T2 K小组负责ND 280探测器的几个组件的建造，NSERC为该项目提供了为期3年的赠款（2006-2008年）。我最近加入了这个小组，因此，我不是在2005年最后一次NSERC赠款竞争中提交的T2 K项目赠款申请的共同申请人。在本提案中，我将申请为期2年的个人补助金，以使我的运营费用与现有的T2 K运营项目补助金同步。该提案将基本上用于支持HQP培训和差旅费用，因为研发和其他相关任务的资金已经通过NSERC资助的RTI T2 K赠款存在。