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

△ [20p-C201-5] Underground cavity detection by using Muography

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

Keywords:muography, muon, simulation

In recent years, collapse accidents due to the shield method used when constructing a large-scale underground tunnel have frequently occurred. Therefore, we propose a disaster prevention system to prevent colapse accidents, exploring underground cavities by Muography. In this paper, we conducted a simulation with a system closer to reality using PHITS, which is a Monte Carlo calculation code that simulates various radiation behaviors in all substances, and examined whether it is possible to detect underground cavities statistically significantly.