Collaborative Research: The SuperCDMS at SNOLAB Science Program

该奖项支持SuperCDMS SNOLAB实验的基础研究计划，该计划将解决现代科学最基本的问题之一-暗物质的性质。SuperCDMS探索了一个具有世界领先灵敏度的低质量暗物质参数空间，这是对正在进行的大型强子对撞机搜索、间接探测实验和直接探测实验(如LZ和XENONnT)的补充，这些实验将搜索更重质量的暗物质。超级CDMS SNOLAB的实验将产生广泛的影响，超越了对暗物质的搜索。该实验的声子介导的探测器在宇宙学、天文学和工业中都有应用。这一努力将为培养本科生和研究生以及博士后研究人员提供机会。SuperCDMS的合作有着悠久的外展历史，重点是吸引来自所有教育水平的代表性不足群体的学生。这一奖项将有助于开发可获得的分析资源，从而显著增加参与SuperCDMS科学分析和一般粒子物理分析的本科生数量。此外，SuperCDMS将通过更多地参加旅行团和SNOLAB现场展览来利用SNOLAB外联团队，并与Cofi合作，为波多黎各的学生和公众带来以暗物质为主题的教育工作。SuperCDMS合作的目标是直接探测银河系暗物质，并在这样做的过程中解决以下问题：暗物质的粒子性质，其天体物理性质，以及它与标准模型有何关系？在追求这一目标的过程中，合作正在建造一个新的实验--SuperCDMS SNOLAB，它配备了先进的低温探测器，对质量在GeV/c平方及以下的暗物质粒子具有前所未有的灵敏度，最终的潜在灵敏度可以精确到太阳中微子-核子散射变得显著的暗物质-核子截面(所谓的“中微子雾”)。这项实验将在加拿大萨德伯里的SNOLAB进行。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

This award supports the base research program of the SuperCDMS SNOLAB experiment that will address one of the most fundamental questions of modern science—the nature of dark matter. SuperCDMS explores a lower mass dark matter parameter space with world-leading sensitivity that is complementary to on-going searches at the Large Hadron Collider, indirect detection experiments, and direct detection experiments like LZ and XENONnT that will search for heavier-mass dark matter. The SuperCDMS SNOLAB experiment will have a broad impact that extends beyond the search for dark matter. The experiment’s phonon-mediated detectors have applications in cosmology, astronomy and industry. This effort will contribute opportunities for training of undergraduate and graduate students and postdoctoral researchers. The SuperCDMS Collaboration has a long history of outreach with a strong focus on engaging students from underrepresented groups at all educational levels. This award will enable the development of accessible analysis resources that will significantly increase the number of undergraduates involved in SuperCDMS science analysis and in particle physics analyses in general. In addition, SuperCDMS will leverage the SNOLAB outreach team by increasing participation in tour groups and SNOLAB on-site exhibits, and partner with the Colegio de F´ısica Fundamental e Interdiciplinaria de las Am´ericas (COFI) in bringing dark matter themed educational efforts to student and public audiences in Puerto Rico.The goal of the SuperCDMS Collaboration is to directly detect galactic dark matter and, in so doing, address the following questions: what is the particle nature of dark matter, what are its astrophysical properties, and how does it relate to the Standard Model? In pursuit of this goal, the Collaboration is in the process of constructing a new experiment, SuperCDMS SNOLAB, equipped with advanced cryogenic detectors that have unprecedented sensitivity to dark matter particles with masses at and below the GeV/c-squared scale, with an ultimate potential sensitivity down to dark matter-nucleon cross sections where solar neutrino-nucleus scattering becomes significant (the so-called “neutrino fog”). The experiment will be sited in SNOLAB, Sudbury, Canada.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.