[21p-P14-1~16] 2 Ionizing Radiation(Poster)

[21p-P14-14] Development of scintillator-type real-time beam monitor for particle beam cancer treatment : Basic characteristics of fiber detector for range verification

〇Manami Kaminaga¹, Kanta Takahashi¹, Koji Morimoto³, Takeo Iwai⁵, Syunsuke Kurosawa^4,6, Fuyuki Tokanai² (1.Yamagata Univ. Grad School, 2.Fac. of Sci., Yamagata Univ., 3.Fac. of Med., Yamagata Univ.., 4.Tohoku Univ., 5.RIKEN, 6.Osaka Univ.)

Keywords:scintillation fiber detector, particle therapy

Recently, particle therapy which accelerates proton or carbon ion to bombard and genetically kill tumor cells is a rapidly growing modality for cancer therapy in the world. Yamagata University Hospital has established a heavy ion cancer therapy center and started with treatment . The major advantage of particle therapy is its excellent dose conformity utilizing sharp Bragg peak to cover the target volume of the cancer, which enables us to suppress the radiation exposure of normal tissues around the target. Because the Bragg peak depth includes substantial range uncertainties, it would be ideal if the Bragg peak depth is monitored during beam irradiation. Secondary charged particle such as proton are emitted during the therapy with irradiation of proton or carbon beam from the interaction between the tissues and the beam. We are currently developing the real time monitoring system by reconstructing the track of secondary proton with a scintillation fiber imager. 2-diminsional detection of electrons from β^- emitter and simulation of tracking of the secondary particles will be discussed.