The SuperCDMS Research Program at SMU

SMU 的 SuperCDMS 研究计划

• 批准号: 1707704
• 负责人: Jodi Cooley
• 金额: $ 61.17万
• 依托单位: Southern Methodist University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-01 至 2021-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1707704&HistoricalAwards=false
• 关键词: SuperCDMS; Research; Program; SMU

Multiple astronomical observations have established that about 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. Deciphering the nature of this so-called Dark Matter is of fundamental importance to cosmology, astrophysics, and high-energy particle physics. A leading hypothesis is that it is comprised of Weakly Interacting Massive Particles, or WIMPs, that were produced moments after the Big Bang. If WIMPs are the dark matter, then their presence in our galaxy may be detectable via scattering from atomic nuclei in detectors located deep underground to help reject backgrounds due to cosmic rays. 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 constituent of the Universe and of physics beyond the Standard Model of particle physics.The educational objective of this award will be to create research opportunities for undergraduate students at SMU and foster relationships with the North Texas community. Students and postdoctoral scholars working on this project will receive strong scientific and educational preparation in the techniques of low temperature physics, high energy physics and astrophysics, simulation techniques and the analysis of data. The North Texas community will benefit from access to faculty and students who will serve as mentors in a variety of programs.The research program at SMU is dedicated to advancing the SuperCDMS SNOLAB experiment towards its goal of exploring the low mass ( 10 GeV) dark matter region with detectors made of Ge and Si crystals operated in both an ultra-sensitive high-voltage mode and standard voltage mode. SuperCDMS must maintain a controlled low background environment. During the next three years, a number of critical milestones must be achieved to advance this program. This includes the finalization of shield designs, background estimations, material selection, experiment construction and analysis development. This project involves several activities which will assist the collaboration towards meeting these milestones: development of background models for use in advanced statistical analyses, development of algorithms for calibration of detectors in the low energy region and surface assay of materials and detector components with the SMU XIA alpha particle counter for the SuperCDMS SNOLAB project.

多次天文观测已经确定，宇宙中大约85%的物质不是由正常的原子组成的，而是由不发射或吸收光的未被探测到的基本“暗物质”粒子组成的。破译这种所谓的暗物质的本质对宇宙学、天体物理学和高能粒子物理学至关重要。一个主要的假设是，它是由大爆炸后瞬间产生的弱相互作用大质量粒子（wimp）组成的。如果wimp是暗物质，那么它们在我们星系中的存在可以通过位于地下深处的探测器的原子核散射来检测，以帮助排除宇宙射线造成的背景。直接探测WIMP暗物质将解决粒子物理学和宇宙学中的一个基本谜团，为了解宇宙的主要物质组成和粒子物理学标准模型之外的物理学提供一个独特的窗口。该奖项的教育目标是为新大的本科生创造研究机会，并促进与北德克萨斯社区的关系。在低温物理、高能物理和天体物理技术、模拟技术和数据分析等方面，将为参与本项目的学生和博士后提供较强的科学和教育准备。北德克萨斯社区将受益于教师和学生，他们将在各种项目中担任导师。SMU的研究计划致力于推进SuperCDMS SNOLAB实验，以探索低质量（10 GeV）暗物质区域，探测器由Ge和Si晶体制成，在超灵敏高压模式和标准电压模式下工作。SuperCDMS必须保持可控的低背景环境。在接下来的三年里，必须实现一些关键的里程碑来推进这一计划。这包括盾构设计的最终确定、背景评估、材料选择、实验建设和分析发展。该项目包括几项活动，这些活动将有助于合作实现这些里程碑：开发用于高级统计分析的背景模型，开发用于校准低能区的探测器的算法，以及SuperCDMS SNOLAB项目中使用SMU XIA α粒子计数器对材料和探测器组件进行表面分析。

项目成果

Search for low-mass dark matter with CDMSlite using a profile likelihood fit

• DOI: 10.1103/physrevd.99.062001
• 发表时间: 2018-08
• 期刊: Physical Review D
• 影响因子: 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;R. A. Cameron;C. Cartaro;D. Cerdeño;Y.-Y. Chang-Y.;J. Cooley;B. Cornell;P. Cushman;F. De Brienne;T. Doughty;E. Fascione;E. Figueroa-Feliciano;C. Fink;M. Fritts;G. Gerbier;R. Germond;M. Ghaith;S. Golwala;H. R. Harris;N. Herbert;Z. Hong;E. Hoppe;L. Hsu;M. E. Huber;V. Iyer;D. Jardin;A. Jastram;C. Jena;M. Kelsey;A. Kennedy;A. Kubik;N. Kurinsky;R. Lawrence;B. Loer;E. Lopez Asamar;P. Lukens;D. MacDonell;R. Mahapatra;V. Mandic;N. Mast;E. Miller;N. Mirabolfathi;B. Mohanty;J. Morales Mendoza;J. Nelson;H. Neog;J. Orrell;S. Oser;W. Page;R. Partridge;M. Pepin;F. Ponce;S. Poudel;M. Pyle;H. Qiu;W. Rau;A. Reisetter;R. Ren;T. Reynolds;A. Roberts;A. E. Robinson;H. Rogers;T. Saab;B. Sadoulet;J. Sander;A. Scarff;R. Schnee;S. Scorza;K. Senapati;B. Serfass;D. Speller;C. Stanford;M. Stein;J. Street;H. A. Tanaka-H. A.-Tanaka-1390470446;D. Toback;R. Underwood;A. Villano;B. von Krosigk;S. Watkins;J. S. Wilson-J. S.-Wilson-2109103973;M. Wilson;J. Winchell;D. Wright;S. Yellin;B. Young;X. Zhang;X. Zhao

Nuclear-recoil energy scale in CDMS II silicon dark-matter detectors

CDMS II 硅暗物质探测器中的核反冲能量标度

• DOI: 10.1016/j.nima.2018.07.028
• 发表时间: 2018
• 期刊: Detectors and Associated Equipment
• 作者: Agnese, R.;Anderson, A.J.;Aramaki, T.;Baker, W.;Balakishiyeva, D.;Banik, S.;Barker, D.;Basu Thakur, R.;Bauer, D.A.;Binder, T.
• 通讯作者: Binder, T.

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

Evaluation and mitigation of trace 210Pb contamination on copper surfaces

• DOI: 10.1016/j.nima.2020.163870
• 发表时间: 2020-03
• 期刊: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 作者: R. Bunker;T. Aramaki;I. Arnquist;R. Calkins;J. Cooley;E. Hoppe;J. Orrell;K. Thommasson

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.