[20p-C201-1~8] 2.2 Radiation physics fundamentals & applications, radiation generators, new technology

[20p-C201-7] Underground cavity detection by using Muography (3) Cosmic-ray muon measurement with the prototype detector

〇Naoya Okamoto¹, Shoichiro Kawase¹, Hiroto Shiba¹, Ayumu Okuda¹, Yukinobu Watanabe¹ (1.Kyushu Univ.)

Keywords:Muography, underground cavity detection, detector development

We propose that Muography applys for detection of an underground cavitiy that causes a cave-in in construction of underground tunnel. A prototyoe detector to measure cosmic-ray muons flux in undergournd has been developed and revealed its fundamental features by an experiment using beta-ray source. Then, another experiment to measure cosmic-ray muon was implemented. The experiment has tow measurement conditions, which were lead blocks in the fielf of view of the detector and background. In this presentation, I report the detail of the second experiment.