Development of a Portable Muography Detector for Infrastructure Degradation Investigation
Development of a Portable Muography Detector for Infrastructure Degradation Investigation
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开发用于基础设施退化调查的便携式 Muography 探测器
DOI：
10.1109/tns.2018.2855737
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发表时间：
2018
影响因子：
1.8
通讯作者：
Y. Watanabe
中科院分区：
文献类型：
--
作者：
K. Chaiwongkhot;T. Kin;Hiroaki Ohno;Ryo Sasaki;Y. Nagata;K. Kondo;Y. Watanabe
开发了一种便携式测光仪来测量基础设施的退化情况，并对其性能进行了测试。该探测器由两个面积为 140 mm <inline-formula> <tex-math notation="LaTeX">$\times \,\, 140$ </tex-math></inline-formula> mm 的μ子位置敏感探测器 (mu-PSD) 组成，放置在紧凑的遮光盒中。每个 mu-PSD 由连接到多像素光子计数器 (MPPC) 的塑料闪烁纤维组成。为了抑制 MPPC 的增益偏差，盒子是隔热的，其内部空气温度由珀尔帖冷却-加热模块维持。 mu-PSD 像素大小为 8.75 mm <inline-formula> <tex-math notation="LaTeX">$\times \,\, 8.75$ </tex-math></inline-formula> mm，两个 mu-PSD 之间的距离设置为 100 mm，以便在测量厚度为几十厘米的典型基础设施时实现 8 msr 的立体角分辨率。宇宙射线μ介子的强度是作为地面天顶角的函数来测量的，结果发现与众所周知的地球表面μ介子强度的经验公式非常吻合。然后，使用放置在建筑物地下室的 muography 探测器成功地对七层混凝土建筑的结构内部进行成像。
A portable muography detector was developed for measuring infrastructure degradation and its performance was tested. The detector consists of two muon position sensitive detectors (mu-PSDs) of the area of 140 mm <inline-formula> <tex-math notation="LaTeX">$\times \,\, 140$ </tex-math></inline-formula> mm, placed in a compact light-shielding box. Each mu-PSD consists of plastic scintillating fibers connected to multipixel photon counters (MPPCs). To suppress the gain deviation of the MPPCs, the box was heat insulated and its inner air temperature was maintained by Peltier cooling–heating modules. The mu-PSD pixel size was 8.75 mm <inline-formula> <tex-math notation="LaTeX">$\times \,\, 8.75$ </tex-math></inline-formula> mm and the distance between the two mu-PSDs was set to 100 mm in order to achieve a solid angle resolution of 8 msr when measuring typical pieces of infrastructure at thicknesses of several tens of centimeters. The intensity of cosmic-ray muons was measured as a function of zenith angle on the ground and was found to be in good agreement with the well-known empirical formula for muon intensity at Earth’s surface. The structural interior of a seven-story concrete building was then successfully imaged with the muography detector placed in the building’s basement.
影响因子：
1.2
作者：
Sato, Tatsuhiko;Niita, Koji;Sihver, Lembit
通讯作者：
Sihver, Lembit