*Yuma Sakakieda¹, Aya Sakaguchi², Yuichi Takaku², Keishi Hosokawa³, Hiroyuki Sekiya³, Shintaro Ito⁴, Motoyasu Ikeda³, Koichi Ichimura⁵, Shinya Yamasaki², Keisuke Sueki² (1. Graduate School of Science and Technology, Degree Programs in Pure and Applied Sciences, University of Tsukuba, 2. Faculty of Pure and Applied Science, University of Tsukuba, 3. Institute for Cosmic Ray Research, University of Tokyo, 4. Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, 5. Research Center for Neutrino Science, Tohoku University)

*Ryohei Tomita¹, Jumpei Tomita¹, Kenichiro Yasuda¹, Daisuke Suzuki¹, Fumitaka Esaka¹, Yutaka Miyamoto¹ (1. JAEA)

*Jumpei Tomita¹, Ryohei Tomita¹, Daisuke Suzuki¹, Kenichiro Yasuda¹, Yutaka Miyamoto¹ (1. JAEA)

*Kenichiro Yasuda¹, Daisuke Suzuki¹, Yutaka Miyamoto¹, Hidehiko Usami² (1. Japan Atomic Energy Agency, 2. RIKOH KAGAKU co.,ltd)