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arXiv 2004.02058physics.ins-detastro-ph.IMhep-ex
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DEAP-3600暗物质实验中利用光子计时的位置重建

Position reconstruction using photon timing for the DEAP-3600 dark matter experiment

Yu Chen

摘要:

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。该探测器由3.3吨超纯液态氩组成,装在一个装有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波长移动器中的天然放射性污染物可发生α衰变。在检测器中发生的相互作用的位置的重建使用关于在每个PMT中检测到的光电子的数量以及它们何时被检测到的信息。在我们的切割套件中包含这些信息,使我们能够识别和删除几乎所有的表面背景事件。本文提出了一种强调光子定时的事件位置重建方法。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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