Heavy Ion Beam Monte Carlo Simulation For The Treatment Of Tumor

~9C ion beam is a source with dual radiation.The relative biologicaleffectiveness of~9C is one time or more than that of12C ions in Bragg peak [1].~9Cion beam has obvious advantages in the treatment of tumor. At home and abroad theresearches of the clinical treatment of tumor by~9C-ion are relatively few, especiallythe need to have an accurate understanding of the physical process, dosecalculations and the debris produces during the interaction with the target materialof heavy ions (~9C) in the tumor treatment process. The nuclear debris, such assecondary particles, protons, neutrons,heavy ions,etc.which produce in radiotherapy,have certain influence on the transient and mild state dose while transferred totumor cells and normal tissues. For this reason the paper presents the Monte Carlotransport code simulation program of~9C-ion beam in the target mass based on aMonte Carlo program FULKA software, and the simulation of~9C-ion beam withdifferent energy transport process in the liquid water target and Tumor modifiedSnyder head phantom. By simulating, the energy deposition in the~9C-ion beam inthe different energy distribution interaction with the target quality, the changes ofnuclear debris, and the distribution of the isotope yield, dose, dose equivalent withthe depth of the target material were obtained. We also compared with energydeposited, isotope yields, dose equivalent which interact with290MeV/u Carbon-12ion beam in water target, which can testify~9C ion beam has obvious advantages inthe treatment of tumor.It can provide the positive and practical significance for theclinical treatment of tumor.