For the first time, a small dual-phase (liquid/gas) xenon time projection chamber was equipped with a top array of silicon photomultipliers for light and charge readout. Here we describe the instrument in detail, as well as the data processing and the event position reconstruction algorithms. We obtain a spatial resolution of \(\sim 1.5\,\text {mm}\) in the horizontal plane. To characterise the detector performance, we show calibration data with internal \(^{83\text {m}}\hbox {Kr}\) and \(^{37}\hbox {Ar}\) sources, and we detail the production of the latter as well as its introduction into the system. We finally compare the observed light and charge yields down to electronic recoil energies of \(2.82\,\text {keV}\) to predictions based on NEST v2.0.A preprint version of the article is available at ArXiv.

中文翻译：

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第一个配备硅光电倍增管并通过37 Ar表征的双相氙气TPC。

第一次，小型双相（液/气）氙气时间投射室配备了顶部的硅光电倍增管阵列，用于光和电荷的读出。在这里，我们将详细介绍该仪器，以及数据处理和事件位置重建算法。我们在水平面中获得\（\ sim 1.5 \，\ text {mm} \）的空间分辨率。为了表征检测器的性能，我们使用内部\（^ {83 \ text {m}} \ hbox {Kr} \）和\（^ {37} \ hbox {Ar} \）源显示校准数据，并详细说明了后者的生产以及将其引入系统。最后，我们将观察到的光和电荷的屈服强度降低到\（2.82 \，\ text {keV} \）的电子反冲能量基于NEST v2.0的预测。该文章的预印本可从ArXiv获得。