论文标题
使用光子计时进行DEAP-3600暗物质实验的位置重建
Position reconstruction using photon timing for the DEAP-3600 dark matter experiment
论文作者
论文摘要
DEAP-3600是一种单相液体氩暗探测器，在加拿大萨德伯里（Sudbury）的Snolab地下2公里处操作。该检测器由3.3吨的超纯液氩在带有255个光电倍增管的球形丙烯酸低温恒温器中。丙烯酸容器或TPB波长变速杆中的天然放射性污染可以α-末期。在检测器中进行的相互作用位置的重建使用有关每个PMT中检测到的光电子数量以及检测到它们的信息。将这些信息包括在我们的剪辑套件中，使我们能够识别和删除几乎所有表面背景事件。这里提出了一种强调光子时间的事件位置重建方法。
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.
