1. Computing Research Center High Energy Accelerator Research Organization(KEK) Oho 1 Tsukuba Ibaraki 305‐0031 Japan
2. Information System Section J‐PARC Center 2‐4, Shirane Shirakata, Tokai‐mura Naka‐gun Ibaraki 319‐1195 Japan
3. Department of Molecular and Macromolecular Chemistry Graduate School of Engineering Nagoya University Furo‐cho, Chikusa‐ku Nagoya Aichi 464‐8603 Japan
4. Fellow Division Toyota Physical and Chemical Research Institute 41‐1, Yokomichi Nagakute Aichi 480‐1192 Japan