SuperCDMS Operation at Soudan

对星系、超星系团、遥远的超新星和宇宙微波背景辐射的观测告诉我们，宇宙中大约85%的物质不是由已知粒子组成的。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都是至关重要的。一个主要的假设是，它是由相互作用很弱的大质量粒子组成的，这些粒子是在大爆炸后不久产生的。如果WIMP是暗物质，那么它们在我们银河系中的存在可能是通过地球探测器中原子核的散射来检测到的。低温暗物质搜索(CDMS)合作开创了使用低温声子介导的探测器来探测WIMP在原子核上罕见的散射并将它们与背景区分开来的先河。这项强大的技术正在明尼苏达州苏丹矿的地下深处作业。该奖项将支持CDMS科学家测试和调试五个总质量为15公斤的SuperCDMS超级塔楼。该项目也是证明锗低温探测器在未来SNOLAB更大质量实验中的可行性的重要一步。超级CDMS苏丹实验是由由15个机构组成的超级CDMS合作组织建造和运营的。更广泛的影响：该实验将产生超越暗物质搜索的广泛影响。这项技术的发展将进一步推动声子介导的探测器的发展，这种探测器已经在宇宙学、天文学和工业中得到了许多应用。该项目将有助于培训学生和博士后研究人员，使用测量技术的前沿技术。此外，合作还将扩大其在苏丹矿的公共外联计划。SuperCDMS的科学家将继续参与K-12，他们与教师的合作，以及他们对来自贫困背景的有前途的高中生的支持。

Observations of galaxies, superclusters, distant supernovae, and the cosmic microwave background radiation tell us that about 85% of the matter in the universe is not made of known particles. Deciphering the nature of this dark matter would be 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 are the dark matter, then their presence in our galaxy may be detectable via scattering from atomic nuclei in a terrestrial detector.The Cryogenic Dark Matter Search (CDMS) Collaboration has pioneered the use of low temperature phonon-mediated detectors to detect the rare scattering of WIMPs on nuclei and distinguish them from backgrounds. This powerful technology is operating deep underground in the Soudan mine in Minnesota. This award will support the CDMS scientists to test and commission five SuperCDMS Super-Towers with a total mass of 15 kg. This project is also an important step to demonstrate the viability of germanium cryogenic detectors for a future larger mass experiment at SNOLAB. The SuperCDMS Soudan experiment is being constructed and operated by the SuperCDMS collaboration which is comprised of fifteen institutions. Broader impacts: the experiment will have a broad impact which extends beyond the dark matter search. The technical development will further advance phonon-mediated detectors, which have already found many applications in cosmology, astronomy and industry. The project will contribute to the training of students, and postdoctoral researchers, using techniques at the leading edge of measurement technologies. In addition, the collaboration will expand its public outreach program at the Soudan mine. SuperCDMS scientists will continue their involvement in K-12, their collaboration with teachers and their support for promising high school students from underserved backgrounds.