Collaborative Research: BICEP2 and SPUD - A Search for Inflation with Degree-Scale Polarimetry from the South Pole

合作研究：BICEP2 和 SPUD - 利用南极度数尺度旋光测量来寻找通货膨胀

• 批准号: 1044978
• 负责人: John Kovac
• 金额: $ 240.98万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-11-01 至 2013-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1044978&HistoricalAwards=false
• 关键词: Collaborative; Research; BICEP2; SPUD; Search

ANT-0742818, PI: John M. Kovac, California Institute of TechnologyANT-0742592, PI: Clement L. Pryke, University of ChicagoCollaborative Research: BICEP2 and SPUD - A Search for Inflation with Degree-Scale Polarimetry from the South PoleThe proposed work is a four-year program of research activities directed toward upgrading the BICEP (Background Imaging of Cosmic Extragalactic Polarization) telescope operating at South Pole since early 2006 to reach far =stretching goals of detection of the Cosmic Gravitational-wave Background (CGB) . This telescope is a first Cosmic Microwave Background (CMB) B-mode polarimeter, specifically designed to search for CGB signatures while mapping ~2% of the southern sky that is free of the Milky Way foreground galactic radiation at 100 GH and 150 GHz. The BICEP1 telescope will reach its designed sensitivity by the end of 2008. A coordinated series of upgrades to BICEP1 will provide the increased sensitivity and more exacting control of instrumental effects and potential confusion from galactic foregrounds necessary to search for the B-mode signal more deeply through space. A powerful new 150 GHz receiver, BICEP2, will replace the current detector at the beginning of 2009, increasing the mapping speed almost ten-fold. In 2010, the first of a series of compact, mechanically-cooled receivers (called SPUD - Small Polarimeter Upgrade for DASI) will be deployed on the existing DASI mount and tower, providing similar mapping speed at 100 GHz in parallel with BICEP2. The latter instrument will reach (and exceed with the addition of a SPUD polarimeter) the target sensitivity r = 0.15 set forth by the Interagency (NSF/NASA/DoE) Task Force on CMB Research for a future space mission dedicated to the detection and characterization of primordial gravitational waves. This Task Force has identified detection of the Inflation's gravitational waves as the number one priority for the modern cosmology. More broadly, as the cosmology captures a lot of the public imagination, it is a remarkably effective vehicle for stimulating interest in basic science. The CGB detection would be to Inflation what the discovery of the CMB radiation was to the Big Bang. The project will contribute to the training of the next generation of cosmologists by integrating graduate and undergraduate education with the technology and instrumentation development, astronomical observations and scientific analysis. Sharing of the forefront research results with public extends the new knowledge beyond the universities. This project will be undertaken in collaboration between the California Institute of Technology and the University of Chicago.

ANT-0742818，PI：John M. Kovac，加州理工学院ANT-0742592，PI：Clement L. Pryke，芝加哥大学合作研究：BICEP2 和 SPUD - 使用南极度尺度旋光测量来搜索通货膨胀拟议的工作是一项为期四年的研究活动计划，旨在升级运行于以下地点的 BICEP（宇宙河外偏振背景成像）望远镜自 2006 年初以来，南极点就达到了探测宇宙引力波背景（CGB）的遥远目标。该望远镜是第一台宇宙微波背景 (CMB) B 模式偏振仪，专门设计用于搜索 CGB 特征，同时绘制 100 GH 和 150 GHz 下不受银河系前景银河辐射影响的南方天空约 2% 的地图。 BICEP1 望远镜将在 2008 年底达到其设计灵敏度。BICEP1 的一系列协调升级将提供更高的灵敏度以及对仪器效应和来自银河系前景的潜在混乱的更精确的控制，这是更深入地搜索 B 模式信号所必需的穿过空间。功能强大的新型 150 GHz 接收器 BICEP2 将在 2009 年初取代当前的探测器，将测绘速度提高近十倍。 2010 年，第一个紧凑型机械冷却接收器（称为 SPUD - DASI 小型旋光计升级版）将部署在现有 DASI 安装座和塔架上，在 100 GHz 下提供与 BICEP2 类似的测绘速度。后一种仪器将达到（并在添加 SPUD 旋光计后超过）目标灵敏度 r = 0.15，该目标灵敏度由机构间 (NSF/NASA/DoE) CMB 研究工作组规定，用于未来致力于探测和表征的太空任务原始引力波。该工作组已将探测暴胀引力波确定为现代宇宙学的首要任务。更广泛地说，由于宇宙学吸引了公众的大量想象力，它是激发人们对基础科学兴趣的非常有效的工具。 CGB 的探测对于暴胀来说就像 CMB 辐射的发现对于大爆炸一样。该项目将通过将研究生和本科生教育与技术和仪器开发、天文观测和科学分析相结合，为下一代宇宙学家的培训做出贡献。与公众分享前沿研究成果将新知识扩展到大学之外。该项目将由加州理工学院和芝加哥大学合作开展。