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Search for Dark Matter with Liquid Argon and Pulse Shape Discrimination: Results from DEAP-1 and Status of DEAP-3600

机译:用液体氩和脉冲形状识别搜索暗物质:   DEap-1的结果和DEap-3600的状态

摘要

In the last decade, Direct Dark Matter searches has become a very activeresearch program, spawning dozens of projects world wide and leading tocontradictory results. It is on this stage that the Dark matter Experiment withliquid Argon and Pulse shape discrimination (DEAP) is about to enter. With a3600~kg liquid argon target and a 1000~kg fiducial mass, it is designed to runbackground free during 3 years, reaching an unprecedented sensitivity of10$^{-46}$~cm$^2$ for a WIMP mass of 100 GeV. In order to achieve thisimpressive feat, the collaboration followed a two-pronged approach: a carefulselection of every material entering the construction of the detector in orderto suppress the backgrounds, and optimum use of the pulse shape discrimination(PSD) technique to separate the nuclear recoils from the electronic recoils.Using the experience acquired ffrom the 7~kg-prototype DEAP-1, a 3600~kgdetector is being completed at SNOLAB (Sudbury, CANADA) and is expected tostart taking data in mid-2014.
机译:在过去的十年中,直接暗物质搜索已成为一项非常活跃的研究计划,在世界范围内产生了数十个项目,并导致矛盾的结果。正是在这个阶段,将要进行带有液态氩和脉冲形状识别(DEAP)的暗物质实验。它具有3600〜kg液态氩靶和1000〜kg基准质量,旨在在3年内无背景运行,对于100 GeV的WIMP质量,达到了前所未有的10 $ ^ {-46} $〜cm $ ^ 2 $的灵敏度。 。为了实现这一令人印象深刻的壮举,双方的合作采取了两管齐下的方法:仔细选择进入检测器结构的每种材料以抑制背景,并优化利用脉冲形状识别(PSD)技术来分离核后座力利用从7公斤原型DEAP-1获得的经验,SNOLAB(加拿大萨德伯里)正在完成3600公斤探测器的研制工作,并有望在2014年中期开始采集数据。

著录项

  • 作者

    Gorel, P.;

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  • 年度 2014
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  • 原文格式 PDF
  • 正文语种 {"code":"en","name":"English","id":9}
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