论文标题
使用液体闪烁体检测器
Mountain muon tomography using a liquid scintillator detector
论文作者
论文摘要
基于大气宇宙射线的MUON断层扫描（MT）是一种有前途的技术，适用于山内内部结构的非破坏性成像。该方法使用衰减后测得的通量分布，并结合已知的MUON角和能量分布以及3D卫星图，以对探测体积内的密度分布进行层析成像。 MUON断层扫描站（MTS）需要具有高分辨率的方向敏感探测器，以最佳跟踪入射宇宙射线MUON。球形液体闪烁体检测器是该应用的最佳候选者之一，因为它的整个$4π$实心角度的均匀检测效率以及通过能源矿床的差异将MUON信号与放射性背景区分开的出色能力。这种类型的检测器（直径为1.3 m）用于中微子实验〜（jne）。其角度分辨率为4.9〜度。在将成像用于基于检测器的jning山结构的结构之后，我们将其应用于地质勘探。对于高度1〜公里的山脉和2.8〜 $ {\ rm g}/{\ rm cm}^3 $在参考岩石中，我们证明，这种检测器可以对内部区域进行$ \ leq $ 2.1〜 $ 2.1〜 $ {\ rm G}/cm g}/cm cm cm cm cm cm} $ cm} $ cm}的内部区域图像图像。 g}/{\ rm cm}^3 $和数百米的大小。
Muon tomography (MT), based on atmospheric cosmic rays, is a promising technique suitable for nondestructive imaging of the internal structures of mountains. This method uses the measured flux distribution after attenuation, combined with the known muon angular and energy distributions and a 3D satellite map, to perform tomographic imaging of the density distribution inside a probed volume. A muon tomography station (MTS) requires direction-sensitive detectors with a high resolution for optimal tracking of incident cosmic-ray muons. The spherical liquid scintillator detector is one of the best candidates for this application due to its uniform detection efficiency for the whole $4π$ solid angle and its excellent ability to distinguish muon signals from the radioactive background via the difference in the energy deposit. This type of detector, with a 1.3~m diameter, was used in the Jinping Neutrino Experiment~(JNE). Its angular resolution is 4.9~degrees. Following the application of imaging for structures of Jinping Mountain with JNE published results based on the detector, we apply it to geological prospecting. For mountains below 1~km in height and 2.8~${\rm g}/{\rm cm}^3$ in the reference rock, we demonstrate that this kind of detector can image internal regions with densities of $\leq$ 2.1~${\rm g}/{\rm cm}^3$ or $\geq$ 3.5~${\rm g}/{\rm cm}^3$ and hundreds of meters in size.
