CAREER: Developing Antenna-Coupled Kinetic Inductance Detectors to Enable Next Generation CMB Experiments

职业：开发天线耦合动感电感探测器以实现下一代 CMB 实验

• 批准号: 1554565
• 负责人: Erik Shirokoff
• 金额: $ 87.17万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1554565&HistoricalAwards=false
• 关键词: CAREER; Developing; Antenna; Coupled; Kinetic

The team will design, build and demonstrate arrays of Kinetic Inductance Detectors (KIDs). A KID contains a very cold, resistance-free device. That device changes its properties when it "sees" the Cosmic Microwave Background (CMB), the faint signal from the young Universe. Vast arrays of KIDs are needed for the next generation of CMB experiments. The team will also provide laboratory experience for undergraduates from underrepresented minorities and for high school students in the Chicago area.The team's goals are: (1) Fabricate single-layer resonators to characterize film properties, measure the intrinsic noise level, and verify sensitivity scaling laws. (2) Couple the resonators to a simple antenna, to measure the response and dielectric
 losses at millimeter wavelengths and to verify full coverage of the CMB atmospheric windows. (3) Test single-pixel multi-channel detectors coupled to wide-band log-periodic antennas, to verify background-limited operation under realistic conditions. (4) Conduct end-to-end laboratory tests of a demonstration KID array of about 2000 pixels. Future CMB experiments using KID arrays with millions of pixels will (a) precisely measure the number of neutrino species and the neutrino mass summed over those species, missing - but vital - information for testing theories of particle physics; and (b) dramatically improve searches for the primordial gravitational B-mode polarization that would prove that the Universe underwent the cosmic inflation posited by theorists.

该团队将设计，建造和演示动态电感探测器（KID）阵列。KID包含一个非常冷的、无电阻的设备。当该设备“看到”宇宙微波背景（CMB）时，它会改变自己的属性，CMB是来自年轻宇宙的微弱信号。下一代CMB实验需要大量的KID阵列。该团队还将为来自少数民族的本科生和芝加哥地区的高中生提供实验室经验。该团队的目标是：（1）制造单层谐振器来表征薄膜特性，测量固有噪声水平，并验证灵敏度定标律。(2)将谐振器耦合到一个简单的天线，以测量毫米波长下的响应和介电损耗，并验证CMB大气窗口的完全覆盖。(3)测试耦合到宽带对数周期天线的单像素多通道探测器，以验证实际条件下的背景限制操作。(4)对约2000像素的演示KID阵列进行端到端实验室测试。未来的宇宙微波背景实验将使用具有数百万像素的KID阵列，（a）精确地测量中微子种类的数量以及这些种类的中微子质量之和，这是检验粒子物理学理论所缺少的--但却是至关重要的--信息;（B）极大地改善对原始引力B模式偏振的搜索，这将证明宇宙经历了理论家假设的宇宙膨胀。