期刊论文

The Monte Carlo-Point Kernel Coupling Method is used to Calculate the Radiation Field of Nuclear Facilities

中文

核科学与工程

0258-0918

2018

38

6

1002-1007

10.3969/j.issn.0258-0918.2018.06.013

32102040505:装备预先研究项目 :湖南省研究生科研创新项目

本校为第一机构

在核设施退役过程中,随着退役设备的拆除,需要计算其三维辐射场的分布,并对核退役场景进行快速、精确的剂量计算和评估,以降低辐射对人员和环境的危害。目前,使用单一的确定论方法和随机性方法计算结构复杂的辐射场均存在不足,无法快速准确的计算退役设施辐射场的分布,而蒙卡-点核耦合计算可精确快速给出辐射场的分布,因此,利用蒙卡-点核耦合方法计算退役辐射场。对多点源辐射场模型计算结果表明,蒙卡-点核耦合计算比单一点核方法计算误差精度提高约1～2个数量级,相比于单一的蒙特卡罗计算可节约几十倍的时间;同时,蒙卡-点核耦合计算对体源模型的计算结果表明,耦合计算比单一的蒙卡方法计算速度...

In the process of decommissioning of nuclear facilities,with the demolition of retired equipment that need to calculate the distribution of the 3D radiation field,then a rapid and accurate dose calculation and evaluation of the nuclear decommissioning scenario is carried out to reduce the radiation hazard to the personnel and the environment.At present, calculation of radiation fields with complex structure and large scale shielding using the deterministic method and stochastic method single calculation have their drawbacks,and the distribution of radiation fields in decommissioning facilities...