Collaborative Research: The SuperCDMS SNOLAB Experiment

合作研究：SuperCDMS SNOLAB 实验

• 批准号: 1809769
• 负责人: Martin Huber
• 金额: $ 34万
• 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: 2018
• 资助国家: 美国
• 起止时间: 2018-08-15 至 2022-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1809769&HistoricalAwards=false
• 关键词: Collaborative; Research; SuperCDMS; SNOLAB; Experiment

Observations indicate that 85% of the matter in the Universe is not made of normal atoms but must be otherwise undetected elementary "dark matter" particles that do not emit or absorb light. Remarkably, particle physics theories proposed for other reasons predict the existence of Weakly Interacting Massive Particles (WIMPs) with just the right properties to be this dark matter. If WIMPs are the dark matter, they may be detectable when they scatter in Earth-based detectors. Direct detection of WIMP dark matter would solve a fundamental mystery in particle physics and cosmology, providing a unique window to learning about the primary matter constituents of the Universe and of physics beyond the Standard Model of particle physics. Over the past three years, the SuperCDMS collaboration has led the field in the search for low-mass dark matter. The most recent results from CDMSlite reached an energy threshold for electron recoils as low as 56 eV. These results excluded new parameter space for the dark matter-nucleon spin-independent cross section for dark matter masses between 1.6 and 5.5 GeV/c2. This project will focus on better understanding the response of the signal detectors in a push to make the SuperCDMS yet more sensitive.The SuperCDMS SNOLAB experiment will have a broad impact which 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. SuperCDMS will engage in education and outreach at local institutions and will coordinate outreach at SNOLAB and the Sanford Underground Research Facility (SURF) in South Dakota to increase the broader impact with a focus on secondary education. This award will support participating in SNOLAB-hosted teacher workshops, modifying and providing middle school dark matter education modules to U.S. educators, and maintaining SuperCDMS-related outreach materials for SNOLAB in Canada and SURF. Existing alliances will enable out-reach to Sudbury First Nations communities. This effort will also support post-graduate education and outreach to underrepresented groups.In order to maximize the science output of SuperCDMS SNOLAB, detailed understanding of the response of detectors to potential signals and backgrounds is required. Measurements at two underground facilities (NEXUS at Fermilab and CUTE at SNOLAB) will characterize and calibrate pre-production SuperCDMS SNOLAB detectors and the first production SuperCDMS SNOLAB towers, with supporting measurements from small devices at university test facilities. Resulting data will allow energy scale calibration, measurements of background levels, understanding of the detailed phonon and electron physics of the detectors, development of improved background-rejection techniques, validation and tuning of Detector Monte Carlo, and optimization of SuperCDMS SNOLAB operational parameters. These data should also provide a dark matter search with world-leading sensitivity.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.

Observations indicate that 85% of the matter in the Universe is not made of normal atoms but must be otherwise undetected elementary "dark matter" particles that do not emit or absorb light.值得注意的是，出于其他原因提出的粒子物理学理论预测了弱相互作用的质量颗粒（WIMP）的存在，而正确的特性则是这种暗物质。如果wim是暗物质，则当它们散布在基于地球的探测器中时，它们可能是可以检测到的。直接检测WIMP暗物质将解决粒子物理和宇宙学上的基本谜团，为学习宇宙的主要成分和物理学的主要物理成分提供了独特的窗口，而不是粒子物理学的标准模型。在过去的三年中，SuperCDMS的合作领导了该领域，以寻找低质量的暗物质。 CDMSLITE的最新结果达到了低至56 eV的电子后坐力的能量阈值。这些结果不包括针对1.6至5.5 GeV/c2之间的暗物质质量的暗物质核苷自旋横截面的新参数空间。 该项目将集中于更好地理解信号探测器的响应，以使超级速度更加敏感。SuperCDMSSnolab实验将产生广泛的影响，超出了对暗物质的搜索。该实验的声子介导的检测器在宇宙学，天文学和工业中都有应用。这项努力将为培训本科生和研究生和博士后研究人员提供帮助。 SuperCDMS将在当地机构进行教育和宣传，并将在南达科他州的Snolab和Sanford Underground研究机构（SURF）协调外展，以增加更广泛的影响，重点是中等教育。该奖项将支持参加Snolab主持的教师研讨会，修改和提供中学的暗物质教育模块，并为加拿大和冲浪的Snolab维护与SuperCDMS相关的外展材料。现有的联盟将使萨德伯里原住民社区范围内。这项努力还将支持研究生教育，并向代表性不足的群体进行宣传。为了最大程度地提高SuperCDMS Snolab的科学输出，需要详细了解探测器对潜在信号和背景的响应。两个地下设施（Fermilab的Nexus和Snolab的Cute）的测量值将表征和校准预生产超级速度Snolab探测器和第一个生产SuperCDMS Snolab Towers，并提供了大学测试设施的小型设备的支持测量。随之而来的数据将允许能量量表校准，背景水平的测量值，对探测器的详细声子和电子物理学的理解，改进的背景拒绝技术的发展，检测器蒙特卡洛的验证和调整以及SuperCDMS snolab snolab操作参数的优化。这些数据还应以世界领先的敏感性提供暗物质搜索。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优点和更广泛的影响审查标准来评估值得支持的。

项目成果

Production rate measurement of Tritium and other cosmogenic isotopes in Germanium with CDMSlite

• DOI: 10.1016/j.astropartphys.2018.08.006
• 发表时间: 2018-06
• 期刊: Astroparticle Physics
• 影响因子: 3.5
• 作者: R. Agnese;T. Aralis;T. Aramaki;I. Arnquist;E. Azadbakht;W. Baker;S. Banik;D. Barker;D. Bauer;T. Binder;M. Bowles;P. Brink;R. Bunker;B. Cabrera;R. Calkins;C. Cartaro;D. Cerdeño;D. Cerdeño;Y. -. Chang;J. Cooley;B. Cornell;P. Cushman;T. Doughty;E. Fascione;E. Figueroa-Feliciano;C. Fink;M. Fritts;G. Gerbier;R. Germond;M. Ghaith;S. Golwala;H. R. Harris;Z. Hong;E. Hoppe;L. Hsu;M. Huber;V. Iyer;D. Jardin;A. Jastram;C. Jena;M. Kelsey;A. Kennedy;A. Kubik;N. Kurinsky;R. Lawrence;B. Loer;E. Asamar;P. Lukens;D. MacDonell;D. MacDonell;R. Mahapatra;V. Mandic;N. Mast;E. Miller;N. Mirabolfathi;B. Mohanty;J. D. Mendoza;J. Nelson;J. Orrell;S. Oser;S. Oser;W. Page;W. Page;R. Partridge;M. Pepin;Fernando Ponce;S. Poudel;M. Pyle;H. Qiu;W. Rau;A. Reisetter;R. Ren;T. Reynolds;A. Roberts;A. Robinson;H. Rogers;T. Saab;B. Sadoulet;B. Sadoulet;J. Sander;A. Scarff;A. Scarff;R. Schnee;S. Scorza;K. Senapati;B. Serfass;D. Speller;M. Stein;J. Street;H. Tanaka;D. Toback;R. Underwood;A. Villano;B. Krosigk;B. Krosigk;S. Watkins;J. Wilson;M. J. Wilson;J. Winchell;D. Wright;S. Yellin;Betty A. Young;X. Zhang;Xingbo Zhao

Energy loss due to defect formation from 206 Pb recoils in SuperCDMS germanium detectors

SuperCDMS 锗探测器中 206 Pb 反冲造成的缺陷形成造成的能量损失

• DOI: 10.1063/1.5041457
• 发表时间: 2018
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Agnese, R.;Aralis, T.;Aramaki, T.;Arnquist, I. J.;Azadbakht, E.;Baker, W.;Banik, S.;Barker, D.;Bauer, D. A.;Binder, T.
• 通讯作者: Binder, T.

Erratum: First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector [Phys. Rev. Lett. 121 , 051301 (2018)]

勘误表：来自 SuperCDMS 单电荷敏感探测器的第一个暗物质约束 [Phys。

• DOI: 10.1103/physrevlett.122.069901
• 发表时间: 2019
• 期刊: Physical Review Letters
• 影响因子: 8.6
• 作者: Agnese, R.;Aralis, T.;Aramaki, T.;Arnquist, I. J.;Azadbakht, E.;Baker, W.;Banik, S.;Barker, D.;Bauer, D. A.;Binder, T.
• 通讯作者: Binder, T.

Investigating the sources of low-energy events in a SuperCDMS-HVeV detector

研究 SuperCDMS-HVeV 探测器中低能事件的来源

• DOI: 10.1103/physrevd.105.112006
• 发表时间: 2022
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Albakry, M. F.;Alkhatib, I.;Amaral, D. W. P.;Aralis, T.;Aramaki, T.;Arnquist, I. J.;Ataee Langroudy, I.;Azadbakht, E.;Banik, S.;Bathurst, C.
• 通讯作者: Bathurst, C.

Constraints on Lightly Ionizing Particles from CDMSlite

• DOI: 10.1103/physrevlett.127.081802
• 发表时间: 2021-08-18
• 期刊: PHYSICAL REVIEW LETTERS
• 影响因子: 8.6
• 作者: Alkhatib, I.;Amaral, D. W. P.;Zheng, L.
• 通讯作者: Zheng, L.