1. Tokyo Institute of Technology, 4259, Nagatsuta, Yokohama, Midori-ku, Kanagawa, 226-8501, Japan
2. NTT Anode Energy Corporation, Granparktower 3-4-1, Shibaura, Minato-ku, Tokyo, 105-0023, Japan
3. High Energy Accelerator Research Organization, 203-1, Oazashirane, Tokai, Naka, Ibaraki, 319-1195, Japan