SuperCDMS SNOLAB continued construction

暗物质的存在在很大程度上是无可争议的，然而，即使在它首次被发现80年后，所有的证据都只是基于大尺度的引力效应。经过二十多年的努力，为解释暗物质观测而提出的弱相互作用大质量粒子（wimp）的搜索灵敏度已经达到了与基于最基本假设开发的模型预测在很大程度上重叠的水平。在WIMP相互作用的直接搜索中缺乏信号，以及在大型强子对撞机中缺乏新粒子的证据，迫使我们考虑粒子物理学标准模型最简单的超对称扩展之外的模型。******超低温暗物质搜索实验（SuperCDMS）通过改进低温半导体探测器的设计来满足这一需求，将对质量低于半GeV/c2的粒子的灵敏度扩展到，大大低于超对称wimp的传统搜索范围。使用不同的靶材料（锗和硅）也为测试暗物质粒子和原子核之间的非标准相互作用机制打开了大门。******SuperCDMS SNOLAB将在未来几年由美国能源部和美国国家科学基金会以及加拿大CFI提供资金。该提案要求在SuperCDMS SNOLAB建设的关键时期为加拿大SuperCDMS小组提供运营资金。加拿大小组成员主要负责新的SNOLAB实验的数据采集、触发、实验基础设施和探测器测试。申请的资金将支持皇后大学、UBC大学、多伦多大学和劳伦森大学/SNOLAB的博士后和研究生，团队成员前往不同的SuperCDMS测试设施进行DAQ工作和探测器测试，以及在建设阶段前往萨德伯里的旅费，以及合作会议、访问合作机构和会议旅费

The existence of dark matter is largely undisputed, yet even 80 years after its first discovery all evidence is based on gravitational effects on large scales only. After more than two decades of dedicated effort, the sensitivity of searches for Weakly Interacting Massive Particles (WIMPs) proposed to explain the dark matter observations has reached a level that overlaps largely with the prediction of models developed with the most basic assumptions. The lack of a signal in direct searches for WIMP interactions as well as the lack of evidence for new particles at the LHC forces us to consider models other than the simplest SuperSymmetric extensions of the standard model of particle physics.******The Super Cryogenic Dark Matter Search experiment (SuperCDMS) embraces this demand by improving the design of the cryogenic semiconductor detectors to extending the sensitivity to particles with masses down to below half a GeV/c2, considerably below the traditional search range for Supersymmetric WIMPs. Using different target materials (germanium and silicon) also opens the door to testing no-standard interaction mechanisms between dark matter particle and atomic nuclei.******SuperCDMS SNOLAB will be constructed with capital funding from DOE and NSF in the US and CFI in Canada over the coming years. This proposal requests operating funds for the Canadian SuperCDMS groups over the critical period during which SuperCDMS SNOLAB will be constructed. Canadian group members have key responsibility for data acquisition, trigger, experiment infrastructure, and detector testing for the new SNOLAB experiment. The requested funds will support postdoctoral fellows and graduate students at Queen's, UBC, the University of Toronto and at Laurentian University/SNOLAB, travel costs for group members to the different SuperCDMS test facilities for DAQ work and detector testing and to Sudbury during the construction phase, as well as collaboration meetings, visits to collaborating institutions and conference travel.**