SQUID-based Readout Systems for Cryogenic Dark Matter Detectors

用于低温暗物质探测器的基于 SQUID 的读出系统

• 批准号: 1102795
• 负责人: Martin Huber
• 金额: $ 16.37万
• 依托单位: University of Colorado at Denver-Downtown Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-01 至 2015-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1102795&HistoricalAwards=false
• 关键词: SQUID; based; Readout; Systems; Cryogenic

A broad range of observations 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 particle physics. A leading hypothesis is that it is comprised of Weakly Interacting Massive Particles (WIMPs) that were produced moments after the Big Bang. Such particles would represent an extension of the Standard Model of particle physics, such as supersymmetry or additional dimensions. 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. The Cryogenic Dark Matter Search (CDMS) Collaboration has pioneered the use of low-temperature phonon-mediated devices to detect the rare scattering of WIMPs on nuclei and to distinguish these events from other background interactions. One of many key technological requirements for the scaling to greater mass of the low-temperature germanium technology is improvement in the cryogenic preamplifiers of both phonon and ionization signals. The superconducting quantum interference device (SQUID) preamplifiers used in the present Soudan facility were produced and evaluated through the efforts of this group several years ago, and the group has been an integral member of the collaboration in optimizing their performance throughout the operation of the various CDMS experiments at Soudan. This award will support the scientific aspects of the CDMS programs in four complementary directions, fully coordinated within the collaboration: (a) support of the SuperCDMS-Soudan experiment (participating in operation of the Soudan experiment, particularly oversight and maintenance of the phonon readout system), (b) contribution to the design of SuperCDMS-SNOLAB (design optimization of cold hardware and electronics), (c) scientific support to SuperCDMS-SNOLAB construction (production testing of SuperCDMS-SNOLAB SQUIDs and room-temperature electronics), and (d) long-term R&D towards GEODM (SQUID-based ionization readout). Continued development of the cryogenic readout systems is a critical component of the science goals of the SuperCDMS and GEODM programs.Broader ImpactsThis program's technological development will also push the envelope of phonon-mediated detectors, the applications of which are increasingly widespread. This program will also support the education and training of physics and electrical engineering students.

广泛的观察结果告诉我们，宇宙中约有85％的物质不是普通粒子制成的，而是以某种黑暗形式存在。解读这种暗物质的性质对于宇宙学，天体物理学和粒子物理学至关重要。一个主要的假设是，它由弱相互作用的巨大颗粒（WIMP）组成，这些颗粒（WIMP）是在大爆炸后瞬间产生的。这样的颗粒将代表粒子物理的标准模型的扩展，例如超对称或其他维度。如果存在通过wimps并且是暗物质，那么通过从陆地检测器中的原子核散射来检测到它们在我们的银河系中的存在。低温暗物质搜索（CDMS）协作率先使用低温声子介导的设备来检测wimps在核上的罕见散射，并将这些事件与其他背景相互作用区分开。将缩放到更大的低温锗技术质量的许多关键技术要求之一是声子和电离信号的低温前置放大器的改善。几年前，通过该组的努力生产和评估了本soudan设施中使用的超导量子干扰装置（Squid）前置放大器，并且该小组一直是该协作的组成部分，以在Soudan在Soudan的各种CDMS实验的整个操作过程中优化其性能。 This award will support the scientific aspects of the CDMS programs in four complementary directions, fully coordinated within the collaboration: (a) support of the SuperCDMS-Soudan experiment (participating in operation of the Soudan experiment, particularly oversight and maintenance of the phonon readout system), (b) contribution to the design of SuperCDMS-SNOLAB (design optimization of cold hardware and electronics), (c) scientific support to SuperCDMS-Snolab构造（SuperCDMS-Snolab鱿鱼和室温电子产品的生产测试），以及（D）长期对GeoDM的R＆D（基于Squid的电离电离读数）。低温读数系统的持续开发是SuperCDM和GeoDM程序的科学目标的关键组成部分。BroaderImpactssphisspons的技术开发也将推动声子介导的探测器的信封，其应用程序的应用越来越广泛。该计划还将支持物理和电气工程专业学生的教育和培训。