Design Development of Innovative High Throughput CMB Telescope for the South Pole

南极创新型高通量 CMB 望远镜的设计开发

• 批准号: 2034402
• 负责人: John Carlstrom
• 金额: $ 156.36万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-15 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2034402&HistoricalAwards=false
• 关键词: Design; Development; Innovative; Throughput; CMB

The search for a background of Primordial Gravitational Waves (PGW, presumably generated by cosmic inflation) is one of the most compelling goals in cosmology and physics today. A detection of PGW would open a new window to fundamental physics at an energy scale inaccessible to terrestrial experiments and provide insight into the quantum nature of gravity. This detection or a sufficiently strong upper limit on the PGW signal in the cosmic microwave background (CMB) would give us new insights into the currently favored paradigm for the origin of the Universe, the theory of cosmic inflation. The proposed research activity will also contribute to training the next generation of scientists by integrating graduate and undergraduate education with the technology development, astronomical observations, and scientific analyses CMB data. This award is to support the design and development of the South Pole three mirror anastigmat telescope (SPTMA), which is an innovative millimeter-wave telescope that would significantly advance the search for PGWs by providing the significant throughput and necessary control of systematics needed to achieve this challenging goal. SPTMA is critical to the advancement of the program of ultra-sensitive CMB measurements, providing a field of view 20 times larger than that of the current South Pole 10-m Telescope (3.5 sq. deg.) by utilizing larger arrays of detectors and improved raw sensitivity. The 5-meter aperture diameter of the SPTMA's primary monolithic mirror will provide 1.6 arcminute resolution at 2-mm wavelength, which is well matched to the requirements for next-generation measurements of primary and secondary CMB anisotropy, including CMB-lensing reconstruction of the distribution of all the mass in the Universe. In addition to enabling measurements of the most distant and exotic signals (especially B-mode signal induced on the CMB by PGWs), the SPTMA will enable key contributions to multi-wavelength and multi-messenger astronomy and astrophysics from our galaxy through the high redshift Universe. This project advances the goals of the NSF Windows on the Universe Big Idea.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

寻找原始引力波（PGW，大概由宇宙膨胀产生）的背景是当今宇宙学和物理学中最引人注目的目标之一。 PGW的探测将为地面实验无法达到的能量尺度上的基础物理学打开一扇新的窗口，并提供对引力量子本质的洞察。这种探测或宇宙微波背景 (CMB) 中 PGW 信号足够强的上限将为我们提供对当前流行的宇宙起源范式（宇宙膨胀理论）的新见解。拟议的研究活动还将研究生和本科生教育与技术开发、天文观测和宇宙微波背景数据科学分析相结合，有助于培养下一代科学家。该奖项旨在支持南极三镜无散光望远镜（SPTMA）的设计和开发，这是一种创新的毫米波望远镜，通过提供实现目标所需的显着吞吐量和必要的系统控制，将显着推进对PGW的搜索这个具有挑战性的目标。 SPTMA 对于超灵敏 CMB 测量计划的进展至关重要，它通过利用更大的探测器阵列和改进的探测器，提供比当前南极 10 米望远镜（3.5 平方度）大 20 倍的视场。原始敏感性。 SPTMA 的主单片镜的孔径直径为 5 米，在 2 毫米波长下可提供 1.6 弧分的分辨率，这非常符合下一代 CMB 各向异性测量的要求，包括分布的 CMB 透镜重建宇宙中所有的质量。除了能够测量最遥远和奇异的信号（特别是由 PGW 在 CMB 上引起的 B 模式信号）之外，SPTMA 还将通过高红移为我们银河系的多波长和多信使天文学和天体物理学做出关键贡献。宇宙。该项目推进了 NSF 宇宙之窗大创意的目标。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Fabrication of a monolithic 5 m aluminum reflector for millimeter-wavelength observations of the cosmic microwave background

用于宇宙微波背景毫米波观测的单片 5 米铝反射器的制造

• DOI: 10.1364/ao.488901
• 发表时间: 2023-06
• 期刊: Applied Optics
• 影响因子: 1.9
• 作者: Natoli, Tyler;Benson, Bradford;Carlstrom, John;Chauvin, Eric;Clavel, Bruno;Emerson, Nick;Gallardo, Patricio;Niemack, Mike;Padin, Steve;Schwab, Klaus;et al
• 通讯作者: et al

Sidelobe modeling and mitigation for a three mirror anastigmat cosmic microwave background telescope

三镜消像散宇宙微波背景望远镜的旁瓣建模和缓解

• DOI: 10.1364/ao.488454
• 发表时间: 2023-05
• 期刊: Applied Optics
• 影响因子: 1.9
• 作者: Gullett, Ian;Benson, Bradford;Besuner, Robert;Bihary, Richard;Carlstrom, John;Emerson, Nick;Gallardo, Patricio A.;Gomez, Jillian;King, Cesiley L.;McMahon, Jeff;et al
• 通讯作者: et al

Optical design concept of the CMB-S4 large-aperture telescopes and cameras

CMB-S4大口径望远镜和相机的光学设计理念

• DOI: 10.1117/12.2626876
• 发表时间: 2022-08
• 期刊: SPIE Astronomical Telescopes + Instrumentation
• 作者: Gallardo, Patricio A.;Benson, Bradford;Carlstrom, John;Dicker, Simon;Emerson, Nick;Gudmundsson, Jon;Hills, Richard;Limon, Michele;McMahon, Jeff;Niemack, Michael D.;et al
• 通讯作者: et al