Effect of Vacuum Condition To Magnetic Field in CYCIAE-100  

作　　者：ZHONG Jun-qing,YANG Jian-jun,LU Yin-long,ZHANG Tian-jue 

出　　处：《Annual Report of China Institute of Atomic Energy》2009年第1期105-106,共2页中国原子能科学研究院年报（英文版）

摘　　要：The top/bottom yoke of CYCIAE-100 is 6160mm in diameter.It is of uneven structure with maximum thickness of 775 mm.The sector pole is 765 mm in height and 2 000 mm in radius.TheThe top/bottom yoke of CYCIAE-100 is 6160mm in diameter. It is of uneven structure with maximum thickness of 775 mm. The sector pole is 765 mm in height and 2 000 mm in radius. The gap between poles is changing gradually from 6.0 cm in inner radius to 5.0 cm in outer radius, and the contour of poles is expressed with the elliptic equation h=3.012 6×（1-R^2/328/328）^1/2. The maximum magnetic field is 1.41 T in median plane for CYCIAE-100, and the cyclotron is operated under high vacuum condition, so the poles will be deformed by magnetic force and atmosphere pressure. The mapping of compact cyclotron is usually carried under atmosphere condition, and the shimming to magnetic field is operated with method of vacuum shimming factor. In order to get the shimming factor, we calculate the field change by finite element method.

关 键 词：磁场垫补 真空条件 回旋加速器 真空操作 不均匀结构 最大厚度 方程表示 大气压力 

分 类 号：O636.12[理学—高分子化学] TN753.92[理学—化学]