DEAP-3600 is a single-phase liquid argon dark matter detector being operated 2 km underground at SNOLAB, Sudbury, Canada. The detector consists of 3.3 tonnes of ultra-pure liquid argon in a spherical acrylic cryostat instrumented with 255 photomultiplier tubes. Natural radioactive contamination in the acrylic vessel or TPB wavelength shifter can alpha-decay. Reconstruction of the position of the interactions taking place in the detector uses information about the number of photoelectrons detected in each PMT and when they were detected. Including this information in our suite of cuts allows us to identify and remove almost all surface background events. A method of event position reconstruction emphasizing photon timing is presented here.

中文翻译：

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DEAP-3600 暗物质实验中使用光子定时的位置重建

DEAP-3600 是一种单相液氩暗物质探测器，在加拿大萨德伯里的 SNOLAB 地下 2 公里处运行。该检测器由装有 255 个光电倍增管的球形丙烯酸低温恒温器中的 3.3 吨超纯液态氩组成。亚克力容器或 TPB 波长转换器中的天然放射性污染可能会发生 α 衰减。检测器中发生的相互作用位置的重建使用有关在每个 PMT 中检测到的光电子数量以及它们何时被检测到的信息。将这些信息包含在我们的剪辑套件中使我们能够识别和删除几乎所有的表面背景事件。这里介绍了一种强调光子时序的事件位置重建方法。