摘要
中国原子能科学研究院正在设计研究的100 MeV强流质子回旋加速器中真空室内的残余气体和磁场中的洛仑兹剥离将导致部分负氢离子束流损失,并在真空室内产生辐射剂量。本工作采用蒙特卡罗方法模拟计算该加速器运行时真空室外壁上沿圆周方向的辐射剂量分布,计算得出其最大值约为143 Sv/h。同时,研究了在加速器停机后真空室内部的剩余辐射剂量场分布及其随时间的衰减规律。
In CIAE＇s 100 MeV high intensity proton cyclotron, the H-dissociation caused by residual gas and Lorentz stripping during acceleration can make some beam losses and result in radioactivity. Monte-Carlo method is used to simulate the dose equivalent rate distribution in the circumference direction of outside wall of the vacuum tank when the machine is running. The simulated result shows that the maximum value of it is about 143 Sv/h. At the same time, the residual radiation field distribution in the vacuum tank and its decay with time were estimated after the machine is shut down.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2006年第4期439-442,共4页
Atomic Energy Science and Technology
