Shinya Suzuki, University of Tokyo, Tokyo, JAPAN, Hiroshi Iwase, HIGH ENERGY ACCELERATOR RESEARCH ORGANIZATION, KEK, Tsukuba, Japan, Kosuke Noborio, School of Agriculture, Meiji University, Kawasaki-shi, Kanagawa, JAPAN, Masaru Mizoguchi, Bunkyo-ku, University of Tokyo, Bunkyo-ku, Tokyo, JAPAN, Daiki Kobayashi, The University of Tokyo, Tokyo, Japan and Tetsu Ito, X-ability Inc., Tokyo, Japan