1. Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Kyushu, Japan
2. Department of Nuclear System Safety Engineering, Nagaoka University of Technology, Nagaoka, Japan
3. Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon, Korea
4. FUGEN Decommissioning Engineering Center, Japan Atomic Energy Agency, Myojin-cho 3, Tsuruga, Fukui Prefecture, Japan