Institute of Modern Physics;
Applied Ion Beam Physics Laboratory;
Fudan University;
Takasaki Advanced Radiation Research Institute;
Japan Atomic Energy Agency;
1233 Watanuki-machi;
Takasaki;
Gunma 370-1292 Japan;
Department of Radiation Oncology;
Fudan University Shanghai Cancer Center;
Department of Oncology;
Shanghai Medical CollegeFudan University;
Research Center for Analysis and Measurement;
Fudan University;