Shinichiro Mori1, Christian Graeff2, Nobuyuki Kanematsu3. 1. Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4-9-1 Anagawa, Chiba, Japan. mori.shinichiro@qst.go.jp. 2. GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany. 3. Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4-9-1 Anagawa, Chiba, Japan.