Radio Detection of the Highest Energy Neutrinos with a Ground-Based Interferometric Phased Array

利用地基干涉相控阵对最高能量中微子进行无线电探测

• 批准号: 1607555
• 负责人: Abigail Vieregg
• 金额: $ 48.12万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-15 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1607555&HistoricalAwards=false
• 关键词: Radio; Detection; Highest; Energy; Neutrinos

Ultra-high-energy neutrinos are unique astrophysical messengers as they interact only weakly with intervening matter and can therefore be used to probe the distant universe. A small but observable flux of these ultra-high-energy neutrinos are expected to be produced in interactions between high-energy "cosmic ray" charged particles traveling through the Universe and Cosmic Microwave Background photons. Observations of these cosmogenic neutrinos probe the structure and evolution of the Universe and test physics at energies beyond the standard models. Utilizing the large volume of radio transparent ice, several pioneering efforts to detect these high energies neutrinos have been implemented in Antarctica. Ultra-high-energy neutrinos traveling through the dense Antarctic ice generate cascades of particles that emit observable radio waves. This award will support the development of a new method for detecting this signature of neutrino interaction based on radio interferometry. The University of Chicago group will develop, deploy, and test a ground-based interferometric phased array to measure the neutrino-induced radio emission. This array will be integrated with the existing Askaryan Radio Array (ARA) experiment located at the South Pole. The award will also support public outreach efforts in partnership with the Adler Planetarium.The University of Chicago group will design and fabricate beam-forming trigger hardware for the phased array, integrate the new array with the existing ARA station hardware in their local laboratories, and then deploy the instrument to the South Pole and perform in situ tests. With data from the integrated stations, they will evaluate the detector design and acquire scientific data to help develop this technology for a larger-scale experimental deployment.

超高能源中微子是独特的天体物理使者，因为它们仅与中间物质相互作用弱相互作用，因此可以用于探测遥远的宇宙。 这些超高能量中微子的小型但可观察到的通量预计将在高能“宇宙射线”带电颗粒之间的相互作用中产生。 对这些宇宙中微子的观察探测了宇宙的结构和演变，并在标准模型以外的能量上进行了物理学。 利用大量无线电透明冰，已经在南极洲实施了几项开创性的努力来检测这些高能量中微子。 超高的能量中微子穿过密集的南极冰，会产生散发可观察到无线电波的粒子的层层。 该奖项将支持开发一种基于无线电干涉仪的中微子相互作用的新方法。 芝加哥大学集团将开发，部署和测试一个基于地面的干涉分阶段阵列，以测量中微子诱导的无线电发射。 该阵列将与位于南极的现有Askaryan无线电阵列（ARA）实验集成。 该奖项还将与阿德勒天文馆合作支持公共宣传工作。芝加哥大学将设计和制造横梁形成的触发触发硬件，将新阵列与当地实验室中的现有ARA站硬件集成在一起，然后将该乐器部署到南极并进行现场测试。 借助来自集成站的数据，他们将评估探测器设计并获取科学数据，以帮助开发该技术以进行大规模的实验部署。