MRI: Development of a Cryogenic Receiver for MKID Detector Arrays

MRI：开发用于 MKID 探测器阵列的低温接收器

• 批准号: 2117894
• 负责人: William Holzapfel
• 金额: $ 99.93万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-15 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2117894&HistoricalAwards=false
• 关键词: MRI; Development; Cryogenic; Receiver; MKID

The current established cosmological model for a theory of the Big Bang still leaves open a question how the entire observable Universe being spawned in a dramatic, exponential "inflation" from a sub-nuclear, microscopical volume to the current macro-scale volume of spacetime. The extraordinarily sensitive measurements of the Cosmic Microwave Background (CMB) radiation (temperature and polarization of the mm/sub-mm sky) are traditionally associated with large CMB surveys, but the ultra-deep sky maps will play a vital role in exploiting the full power of new cosmological observables and provide groundbreaking constraints on the duration and timing of the Epoch of Reionization. This award supports the design and construction of a 100 mK dilution refrigerator cryostat that will be used to develop and test prototype Microwave Kinetic Inductance Detector (MKID) arrays, multiplexed readout, and low-loss optics. When this cryostat is outfitted with a full complement of detector arrays, readout, and optics, it will comprise a new camera with unique capabilities not provided by any existing or planned millimeter/submillimeter (mm/sub-mm) experiments. Observations with this camera on the 10-meter South Pole Telescope (SPT) will lead to major advances in our quest to understand the evolution of the Universe and the underlying physics that governs its expansion. This proposal leverages significant investment in the production of prototype MKID arrays and readout and will benefit from the NSF's investments in the SPT construction and operation, thus enabling rapid deployment of this camera and realization of the groundbreaking new scientific program. This work builds on the experience and scientific successes of the SPT team that which has fielded three cameras on the SPT and used the resulting data to produce world-leading studies of the early Universe.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

当前建立的大爆炸理论的宇宙学模型仍然留下了一个问题，该问题是如何以戏剧性的，指数的“通货膨胀”从核核，微观的微观体积到当前宏观尺度的时空体积产生的。传统上，宇宙微波背景（CMB）辐射（CMB）辐射的非常敏感的测量（CMB）辐射（温度和极化）在传统上与大型CMB调查有关，但是超深的天空图将在利用新型宇宙学观察力的全部力量中起着至关重要的作用。该奖项支持100 MK稀释冰箱低温恒温器的设计和构建，该冰箱将用于开发和测试原型的微波动力学感应探测器（MKID）阵列，多路复用读数和低损坏光学器件。当此低温恒温器配备了完整的检测器阵列，读取和光学元件时，它将组成一个新的相机，具有任何现有或计划中的毫米/毫米计（mm/sub-mm）实验的独特功能。在10米的南极望远镜（SPT）上使用该摄像机的观察将导致我们寻求了解宇宙的演变以及控制其扩张的基础物理学的重大进展。该提案利用了原型MKID阵列和读数的大量投资，并将受益于NSF在SPT构造和运营中的投资，从而可以快速部署这款相机并实现了开创性的新科学计划。这项工作以SPT团队的经验和科学成功为基础，SPT团队已经在SPT上实施了三台摄像机，并使用了结果数据来对早期宇宙进行世界领先的研究。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子和更广泛影响的评估来通过评估来获得支持的。