Study of the energy calibration of the DEAP-3600 detector using Na-22 source data and simulations

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-01 DOI:10.1088/1748-0221/19/05/c05030

L. Luzzi

引用次数: 0

Abstract

DEAP-3600 is a single-phase liquid argon (LAr) direct-detection dark matter experiment, operating 2 km underground at SNOLAB (Sudbury, Canada). The detector consists of 3.3 tons of LAr contained in a spherical acrylic vessel. At WIMP mass of 100 GeV, DEAP-3600 has a projected sensitivity of 10-46 cm2 for the spin independent elastic scattering cross section of WIMPs. Radioactive sources have been used for the energy calibration and to test the detector performance. One of the most effective calibration run has been taken with a 22Na source deployed in a tube located around the DEAP-3600 steel shell. The simultaneous emission of three γs by the source provides an excellent tagging for the 22Na decay. The results concerning the energy response of the detector and the agreement between data and Monte Carlo simulations in DEAP-3600 are investigated in this study.

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利用 Na-22 源数据和模拟对 DEAP-3600 探测器的能量校准进行研究

DEAP-3600 是一个单相液态氩（LAr）直接探测暗物质实验，在 SNOLAB（加拿大萨德伯里）地下 2 公里处运行。探测器由 3.3 吨 LAr 组成，装在一个球形丙烯酸容器中。在 WIMP 质量为 100 GeV 时，DEAP-3600 对 WIMP 的自旋无关弹性散射截面的灵敏度预计为 10-46 平方厘米。放射性源被用于能量校准和探测器性能测试。其中一次最有效的校准运行是在 DEAP-3600 钢壳周围的一个管子中使用 22Na 源进行的。该源同时发射的三个 γ 为 22Na 衰变提供了极好的标记。本研究调查了探测器的能量响应结果以及 DEAP-3600 中数据与蒙特卡罗模拟之间的一致性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.