Collaborative Research: ADMX-HF Early Start

合作研究：ADMX-HF 早期启动

• 批准号: 1306736
• 负责人: Konrad Lehnert
• 金额: $ 36.25万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-04-15 至 2016-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1306736&HistoricalAwards=false
• 关键词: Collaborative; Research; ADMX; HF; Early

All astrophysical and cosmological data now point convincingly to a large component of Cold Dark Matter (CDM) in the Universe, but a dark matter particle has yet to be directly detected. A well-motivated possible candidate is a light axion. Should axions constitute the dark matter of our Milky Way halo, they may be detected through their conversion into a narrow microwave signal by an apparatus consisting of a microwave cavity resonator permeated by a magnetic field. Using this concept the Axion Dark Matter eXperiment (ADMX) has performed a search for such axions within the mass range of a few micro-eV. Recently a smaller microwave cavity experiment was constructed called ADMX-HF (High Frequency), specifically to explore higher ranges of axion masses. ADMX-HF also serves as a test-bed for innovations in microwave cavity and amplifier technologies that could be migrated to the larger ADMX platform. ADMX-HF and ADMX operate as "one experiment, two sites", sharing expertise, technology, and data. This award will expand the collaboration to accelerate the construction of ADMX-HF as well as dramatically expand its initial capability.Broader Impacts: ADMX has proven to be a technology driver as components such as the SQUID amplifiers developed for ADMX are already being used for other purposes. Innovations to be developed by ADMX-HF have similarly broad potential. Both PI and Co-PI are committed educators with long experience in involving undergraduate students in their research and engaging the public. The research funded through this award will inform additional education and outreach initiatives with which they are involved.

现在，所有的天体物理学和宇宙学数据都令人信服地指出，宇宙中存在大量的冷暗物质（CDM），但暗物质粒子尚未被直接探测到。一个很有可能的候选者是光轴子。如果轴子构成了我们银河系晕的暗物质，它们可以通过由磁场渗透的微波腔谐振器组成的装置转换成狭窄的微波信号来检测。利用这一概念，轴子暗物质实验（ADMX）已经在几个微电子伏特的质量范围内搜索了这样的轴子。最近建立了一个较小的微波腔实验，称为ADMX-HF（高频），专门用于探索更高范围的轴子质量。ADMX- hf还可以作为微波腔和放大器技术创新的试验台，这些技术可以迁移到更大的ADMX平台。ADMX- hf和ADMX以“一个实验，两个站点”的方式运作，共享专业知识，技术和数据。该合同将扩大双方的合作，加速ADMX-HF的建设，并大幅扩展其初始能力。更广泛的影响：ADMX已经被证明是一个技术驱动程序，因为为ADMX开发的SQUID放大器等组件已经被用于其他目的。ADMX-HF将开发的创新也具有同样广泛的潜力。PI和Co-PI都是长期致力于让本科生参与研究和吸引公众参与的教育工作者。通过该奖项资助的研究将为他们参与的其他教育和外展活动提供信息。