Halcyon“环形”直线加速器屏蔽计算方法研究

Discussion on shielding calculation method of halcyon“ring”linac

目的探讨TOMO加速器机房屏蔽计算方法是否适用于Halcyon加速器。方法选择一改建Halcyon“环形”直线加速器机房为模型,分别采用C型臂加速器、TOMO加速器两种机房的屏蔽计算方法进行屏蔽计算。评价建设单位的屏蔽设计是否满足防护要求,并比较两种方法的计算结果的差异是否有统计学意义。结果两种计算方法均发现建设单位设计的屏蔽措施满足防护要求。两种方法的计算结果差异无统计学意义(t=-1.432,P>0.05)。结论TOMO加速器机房屏蔽计算方法适用于Halcyon加速器机房的屏蔽计算。

Objective This paper discusses whether the shielding calculation method of tomo accelerator room is suitable for halcyon accelerator.Methods A reconstructed halcyon“ring”linear accelerator room was selected as the model,the shielding calculation methods of“C”arm accelerator and tomo accelerator were adopted for shielding calculation.Whether the shielding design of the construction unit meeting the protection requirements wase valuated,and whether the difference between the calculation results of the two methods for statistically significant was compared.Results The shielding measures designed by the construction unit meeting the protection requirements were verified in two different methods.No significant difference between the two methods was found(t=-1.432,P>0.05).Conclusion The shielding calculation method of tomo accelerator room is applicable to the shielding calculation of halcyon accelerator room.