THPH038  電磁石と電源  8月1日 百周年時計台記念館 国際交流ホール 13:30-15:30
Improvement of correction magnets with permanent magnets
○阿部 賢,岩下 芳久(京大化研),照沼 信浩(KEK),不破 康裕(原子力機構),八子 丈生(京大化研)
○Masashi Abe, Yoshihisa Iwashita (ICR, Kyoto Univ.), Nobuhiro Terunuma (KEK), Yasuhiro Fuwa (JAEA), Tomoki Yako (ICR, Kyoto Univ.)
Application of permanent magnets to the damping ring of International Linear Collider (ILC) is investigated. Replacing electromagnets with permanent magnets can reduce not only electricity for exciting the coils and maintenance cost of power supplies but also leakage accidents of cooling water. Bending magnets and correction magnets are used in damping ring, but we tried to calculate magnetic field distributions in a correction magnets using permanent magnets with 3D magnetic field code CST studio. Then we modified magnet shape and calculated again, and the results of the evaluation are presented.