基于CAD的点核剂量计算方法研究及初步应用  

Research and Preliminary Application of CAD-Based Point-Kernel Integral Method for Dose Calculation

作　　者：王杰[1,2] 石志勇 宋婧[2] 郝丽娟[2] 胡丽琴[2,1] 葛鹏[2] 

机构地区：[1]中国科学技术大学,安徽合肥230027 [2]中国科学院核能安全技术研究所中国科学院中子输运理论与辐射安全重点实验室,安徽合肥230031 [3]火箭军装备研究院,北京市100094

出　　处：《核科学与工程》2016年第5期656-662,共7页Nuclear Science and Engineering

基　　金：国家自然科学基金91026004;国家ITER 973计划2014GB112001

摘　　要：点核积分方法是辐射剂量计算的基本方法之一,广泛应用于辐射防护领域。传统的点核剂量计算中采用文本方式描述计算模型,存在难以描述复杂几何、易出错且耗时的问题。针对该问题,本文基于FDS团队自主研发的超级蒙卡核模拟软件系统SuperMC,进行了基于CAD的点核剂量计算方法研究与程序开发,可基于实际问题的CAD模型直接进行支持多重源的光子点核剂量计算,提高了程序对复杂三维几何问题的处理能力,并包含较为完备的核数据库。使用ANSI/ANS6.6.1、ESIS和VisiPlan的基准例题对程序进行了测试验证,测试结果与VisiPlan4.0对比吻合良好。同时将该方法初步应用于ITER热室屏蔽的设计中,说明了本方法及程序处理复杂场景问题的能力。Point-kernel integral method is widely used in radiation shielding field and taken as a basic method for radiation dose calculation.However,for traditional pointkernel codes,describing the geometry of problems using text files is difficult to describe complex geometry and error-prone.Based on Super Monte Carlo Simulation Program for Nuclear and Radiation Process SuperMC,developed by FDS Team,a CAD-based pointkernel integral method was proposed in this study and implemented.The CAD model of problems can be directly used for calculation,which improves the ability of handing complex geometry.Gamma dose calculation can be performed with multi-source and complete database based on point-kernel method.Benchmark cases from ANSI/ANS-6.6.1,ESIS and VisiPlan were used to validate the code.The results were in consistent with those of VisiPlan4.0. Using SuperMC,the preliminary design of shielding design of ITER hot cell building was performed,which demonstrated the ability of this method for handling complex problems.

关 键 词：剂量率 点核 CAD ITER SuperMC 

分 类 号：TL329.2[核科学技术—核技术及应用]