Experimental Particle Cosmology

实验粒子宇宙学

• 批准号: 0802575
• 负责人: Bernard Sadoulet
• 金额: $ 126万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-05-01 至 2011-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0802575&HistoricalAwards=false
• 关键词: Experimental; Particle; Cosmology

PROPOSAL NUMBER: 0802575INSTITUTION: University of California ? BerkeleyNSF PROGRAM: PHY ? UNDERGROUND PHYSICSPRINCIPAL INVESTIGATOR: Sadoulet, BernardTITLE: Experimental Particle Cosmology ABSTRACTA broad range of observations, from galaxies and superclusters to distant supernovae and the cosmic microwave background radiation, tell us that about 85% of the matter in the universe is not made of ordinary particles, but exists in some dark form. Deciphering the nature of this dark matter is of fundamental importance to cosmology, astrophysics, and high-energy particle physics. A leading hypothesis is that it is comprised of Weakly Interacting Massive Particles, or WIMPs, that were produced moments after the Big Bang. If WIMPs exist and are the dark matter, then their presence in our Milky Way may be detectable via scattering from atomic nuclei in a terrestrial detector. This proposal requests the renewal of the base program of the UC Berkeley group to support their participation in the Cryogenic Dark Matter Search (CDMS) CDMS-II & SuperCDMS 25 kg projects. This includes (a) the completion of the CDMS-II experiment, which is fully constructed and acquiring science data at the Soudan Mine in Minnesota, and (b) the testing and underground operation in the CDMS-II infrastructure at Soudan of two new SuperTowers. This program will have broader impact than improving limits or detecting WIMPs. Not only are its scientific results important for astrophysics and particle physics, but its technological development will also push the envelope of phonon-mediated detectors, whose applications are increasingly widespread, and contribute to the development of non-dissipative readout techniques. Furthermore, they continue to support the public outreach program at Soudan, which hosts some 60,000 visitors and tens of classes each year for tours of the mine and laboratory.

提案编号：0802575机构：加州大学？BerkeleyNSF：物理学？地下物理学研究员：Sadoulet，BernardTitle：实验粒子宇宙学 从星系和超星系团到遥远的超新星和宇宙微波背景辐射，广泛的观测告诉我们，宇宙中大约85%的物质不是由普通粒子组成的，而是以某种黑暗的形式存在。破译这种暗物质的性质对宇宙学、天体物理学和高能粒子物理学具有根本的重要性。一个主要的假设是，它是由弱相互作用大质量粒子（WIMP）组成的，这些粒子是在大爆炸后产生的。如果WIMP存在并且是暗物质，那么它们在我们银河系中的存在可以通过地面探测器中原子核的散射来检测。该提案要求更新加州大学伯克利分校小组的基础计划，以支持他们参与低温暗物质搜索（CDMS）CDMS-II SuperCDMS 25 kg项目。这包括：（a）完成清洁发展机制第二阶段试验，在明尼苏达州的苏丹矿全面建造并获取科学数据;（B）在苏丹对两座新的超级塔进行清洁发展机制第二阶段基础设施的测试和地下运行。该计划将比提高限制或检测WIMP产生更广泛的影响。它的科学成果不仅对天体物理学和粒子物理学具有重要意义，而且它的技术发展也将推动应用日益广泛的声子介导探测器的发展，并有助于非耗散读出技术的发展。此外，他们继续支持苏丹的公共外联方案，该方案每年接待约60 000名游客，并举办数十次图尔斯参观矿山和实验室的课程。