Proposal to Develop Station Technology for the ARIANNA Ultra-High Energy Neutrino Detector

开发 ARIANNA 超高能中微子探测器站技术的提案

• 批准号: 0839133
• 负责人: Steven Barwick
• 金额: $ 13.98万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-01 至 2011-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0839133&HistoricalAwards=false
• 关键词: Proposal; Develop; Station; Technology; ARIANNA

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The proposal seeks funding to continue investigations of remarkable properties of the Ross Ice Shelf near McMurdo Station, Antarctica, for the detection of neutrinos as they cause radio emission upon their rare collisions with the atomic nuclei in the ice. The ice sheet is impressively transparent to electromagnetic radiation at radio frequencies and the water-ice boundary below the shelf behaves like a good mirror to reflect radio signals from neutrino interactions in any downward direction. These properties were confirmed in recent studies of the at Moore?s Bay through the NSF's SGER award. Moreover, it was found that the background noise level at this site is quite modest in the frequency band of interest. Simulations show excellent energy and angular resolution if the full array of radio detectors will be built - because the events are typically contained within the ice beneath the surface stations. It is proposes to take the next logical step toward the realization of the ARIANNA array concept by designing, constructing, and deploying two autonomous detector stations at the site to assess the overall array large-scale feasibility, system robustness, and the ambient noise environment over an extended period of time. Each station consists of eight linearly polarized antennas residing just beneath the snow surface, oriented downwards and arranged in an octagon with ~6m diameter. Nearby Minna Bluff range protects the site from significant anthropogenic radio noise coming from McMurdo Station. At the same time, the site's close proximity to McMurdo provides a number of suitable options for logistical support. Continued reliance on students provides a broader impact of this proposed research and firmly grounds this effort in its educational mission.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该提案寻求资金，以继续研究南极洲麦克默多站附近罗斯冰架的非凡特性，以探测中微子，因为中微子在与冰中的原子核发生罕见碰撞时产生无线电辐射。在无线电频率下，冰盖对电磁辐射是透明的，令人印象深刻，冰架下面的水冰边界就像一面很好的镜子，可以反射任何向下方向的中微子相互作用产生的无线电信号。这些性质在最近对摩尔？通过NSF的SGER奖。此外，研究发现该地点的背景噪音水平在研究频带内相当适中。模拟显示，如果建造完整的射电探测器阵列，能量和角度分辨率都很好，因为这些事件通常包含在地表观测站下面的冰层中。本文建议采取下一步逻辑步骤，通过在现场设计、建造和部署两个自主检测站来实现ARIANNA阵列概念，以评估整个阵列的大规模可行性、系统鲁棒性和长时间的环境噪声环境。每个观测站由8个线极化天线组成，这些天线位于积雪表面下方，方向向下，排列成直径约6米的八角形。附近的Minna Bluff山脉保护该遗址免受来自麦克默多站的严重人为无线电噪声的影响。与此同时，该基地靠近麦克默多，为后勤支持提供了许多合适的选择。对学生的持续依赖为这项拟议的研究提供了更广泛的影响，并坚定地将这一努力作为其教育使命的基础。