[17p-S2_201-1~15] 2.4 Life Sciences, Medical applications, Space and Earth Environment, Radiation Education

5:15 PM - 5:30 PM JST(8:15 AM - 8:30 AM UTC)

[17p-S2_201-13] Development of single-crystal CVD diamond based clinical dosimeter for LET measurement at clinical intensity of heavy ion radiotherapy.

〇Takumi Matsumoto¹, Kengo Oda², Sakura Uehara², Yuto Akashi², Sora Ito¹, Akihiko Matsumura³, Hideyuki Takei⁴, Shunsuke Yonai⁴, Junichi Kaneko², Shigeo Matsuyama¹, Wataru Kada¹ (1.Tohoku Univ., 2.Hokkaido Univ., 3.GHMC, 4.QST)

Keywords:

Diamond detector,Linear Energy Transfer

LET dispersive measurement is essential for the advancement of heavy-ion radiotherapy. We have developed diamond detectors owing to their excellent radiation hardness and tissue equivalence. However, when measuring clinical heavy-ion beams at therapeutic intensities, signal pile-up became a significant issue. To address this, we developed a single-crystal CVD diamond detector with a sensitive volume reduced to one-tenth that of our previous one. In this study, we report on the evaluation of this developed detector in clinical carbon-ion fields.