Proposal to Measure the Performance Potential of the TAUWER Neutrino Detector

测量 TAUWER 中微子探测器性能潜力的提案

• 批准号: 0969877
• 负责人: James Russ
• 金额: $ 23.56万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-06-01 至 2013-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0969877&HistoricalAwards=false
• 关键词: Proposal; Measure; Performance; Potential; TAUWER

TAUWER, a collaboration of Carnegie Mellon, Rome, and Turkey, uses the earth-skimming neutrino detection scheme initially proposed by Fargion in 1999-2001. TAUWER will implement it so as to provide an instrument of greater sensitivity, straight-forward expansion by an order of magnitude, and relatively low cost. TAUWER is a two-layer scintillator sampling telescope to detect the upward-moving air showers from tau hadronic decays. The hadronic decay channel of the tau-lepton makes possible a simple detection scheme based on identifying gammas, electrons and muons and determining their spatial density around the shower axis. Thus, detecting the showers from a set of tau-lepton decays gives a good estimate of the parent tau-neutrino spectrum. TAUWER is expandable, should future data indicate that need.Previous work by this group has demonstrated that TAUWER detectors can separate upward and downward moving tracks by time of flight and to separate electrons and muons by waveform analysis after a Pb converter. This award provides funding to address the next crucial question in TAUWER validation - how well can one reject Extensive Air Shower (EAS) events in which independent particles hit the two scintillator tiles of a detector station and produce a signal that mimics the timing associated with an upward-moving shower particle? The three groups will work on building a library of tau-neutrino interactions and air shower development to use in building the multivariate likelihood scheme needed to go from shower profile and composition information back to parent neutrino energy and angle. Finally, there will be efforts to develop more cost-effective methods to handle the readout and waveform digitization. All these steps are crucial to the ultimate goal of constructing TAUWER as a premiere Neutrino Astronomy (NA) telescope to complement and extend the work now underway at IceCube and Auger.Broader Impacts: Ultrahigh-energy cosmic neutrinos potentially open the way to understanding the acceleration mechanisms in Active Galactic Nuclei and other black-hole related sources distributed throughout the space-time continuum of our universe. The successful implementation and operation of TAUWER will have broad impact on black hole cosmology and on the fundamental question of the origin of the highest energy cosmic rays, one of the fundamental questions of our time.

TAUWER是卡内基梅隆大学、罗马和土耳其的合作项目，它使用了最初由Fargion在1999-2001年提出的掠过地球的中微子探测方案。陶尔将实施它，以便提供一种更高灵敏度的仪器，直接扩展一个数量级，并且成本相对较低。TAUWER是一个双层闪烁体取样望远镜，用于探测τ强子衰变中向上移动的空气簇射。τ轻子的强子衰变通道使得一个简单的探测方案成为可能，该方案基于识别伽马、电子和μ子，并确定它们在簇射轴周围的空间密度。因此，从一组τ轻子衰变中探测到簇射，就可以很好地估计母τ中微子谱。TAUWER是可扩展的，如果未来的数据表明，需要。以前的工作，由这个小组已经证明，TAUWER探测器可以分离向上和向下移动的轨道的飞行时间和分离的电子和μ子的波形分析后，铅转换器。该奖项为解决TAUWER验证中的下一个关键问题提供了资金-如何拒绝广泛的空气簇射（EAS）事件，其中独立粒子撞击探测器站的两个闪烁体瓷砖并产生模拟与向上移动的簇射粒子相关的时间的信号？这三个小组将致力于建立一个τ中微子相互作用和空气簇射发展的库，用于建立从簇射剖面和成分信息返回到母中微子能量和角度所需的多变量似然方案。最后，将努力开发更具成本效益的方法来处理读出和波形数字化。所有这些步骤都是至关重要的建设TAUWER作为一个首演中微子天文学（NA）望远镜的最终目标，以补充和扩展目前正在进行的工作在冰立方和俄歇。更广泛的影响：超高能宇宙中微子可能打开的方式来了解活动星系核和其他黑洞相关的源分布在整个宇宙的时空连续的加速机制。TAUWER的成功实施和运行将对黑洞宇宙学和最高能量宇宙射线起源的基本问题产生广泛的影响，这是我们时代的基本问题之一。