论文标题
用于暗物质和中微子弹性相互作用搜索的大质量单电子分辨率检测器
Large-mass single-electron-resolution detector for dark matter and neutrino elastic interaction searches
论文作者
论文摘要
需要大质量单电子分辨率固态检测器，以寻找低质量暗物质候选物并测量相干弹性中微子核散射（CE $ν$ ns）。在这里，我们介绍了具有新的接口体系结构的新型100 g声子介导的SI检测器的结果。该检测器的基线分辨率为$ \ sim 1 e^{ - }/h^{+} $配对和泄漏电流的$ 10^{ - 16} $ A的顺序。这是通过删除SI晶体和金属电极之间的直接电气接触来实现的，并提高了传感器的语音吸收效率。检测器中的声子信号放大显示线性增加，而信号与噪声比通过偏置电压提高，高达240V。此功能使检测器能够在低能阈值下运行，这对暗物质和CE $ν$ NS等搜索等有益。
Large mass single-electron-resolution solid state detectors are desirable to search for low mass dark matter candidates and to measure coherent elastic neutrino nucleus scattering (CE$ν$NS). Here, we present results from a novel 100 g phonon-mediated Si detector with a new interface architecture. This detector gives a baseline resolution of $\sim 1 e^{-}/h^{+}$ pair and a leakage current on the order of $10^{-16}$ A. This was achieved by removing the direct electrical contact between the Si crystal and the metallic electrode, and by increasing the phonon absorption efficiency of the sensors. The phonon signal amplification in the detector shows a linear increase while the signal to noise ratio improves with bias voltage, up to 240 V. This feature enables the detector to operate at a low energy threshold which is beneficial for dark matter and CE$ν$NS like searches.
