标题： 一种用于在阿伯丁隧道实验室研究剥离中子的装置 显示英文标题

标题： An apparatus for studying spallation neutrons in the Aberdeen Tunnel laboratory

摘要： 在本文中，我们描述了安装在香港 Aberdeen 隧道实验室中的装置的设计、构建和性能，该装置用于研究在611米水当量（m.w.e.）垂直岩石覆盖层下由宇宙线μ子引起的裂变中子。 该装置包括六个水平层的塑料闪烁体探测器，用于确定入射宇宙线μ子的方向和位置。 探测器平面之间夹着一个中子探测器，其中填充了650公斤掺杂约0.06%重量的钆的液体闪烁体，以提高检测裂变中子的效率。 还介绍了该装置的性能。 显示英文摘要

摘要： In this paper, we describe the design, construction and performance of an apparatus installed in the Aberdeen Tunnel laboratory in Hong Kong for studying spallation neutrons induced by cosmic-ray muons under a vertical rock overburden of 611 meter water equivalent (m.w.e.). The apparatus comprises of six horizontal layers of plastic-scintillator hodoscopes for determining the direction and position of the incident cosmic-ray muons. Sandwiched between the hodoscope planes is a neutron detector filled with 650 kg of liquid scintillator doped with about 0.06% of Gadolinium by weight for improving the efficiency of detecting the spallation neutrons. Performance of the apparatus is also presented.