TUP025  ハドロン加速器  8月1日 第1,2,3,4会議室他 13:00 - 15:00
重粒子線治療向け後段DTL の設計
Design of post DTL for heavy-ion radiotherapy
○岡屋 慶子,山口 晶子,竹内 猛,渡辺 順子,佐藤 耕輔,中山 光一(東芝),林崎 規託(東工大)
○Keiko Okaya, Akiko Yamaguchi, Takeshi Takeuchi, Junko Watanabe, Kosuke Sato, Koichi Nakayama (Toshiba), Noriyosu Hayashizaki (Tokyo Tech.)
An Injector which consisted of a Radio Frequency Quadrupole (RFQ) and Drift Tube Linacs (DTLs) were applied for heavy ion radiotherapy system. In Japanese conventional facilities, a C4+ beam is accelerated to 4 MeV/u by the injector. The extraction energy is needed higher than 4 MeV/u to accelerate a greater variety of heavy ions. We designed the post DTL which can accelerate the beam from 4MeV/u to 6MeV/u and optimized shape of ridges to promote uniformity of electric field on beam axis.