摘要
在三维蒙特卡罗粒子输运程序MCNP的基础上,发展了一种用于几何结构复杂的核聚变装置如托卡马克装置停机剂量率的精确计算方法——严格两步法(R2S)。首先对R2S方法进行描述,然后在ITER停机剂量率实验T426的基础上进行校核计算,并与“直接一步法”(D1S)进行了比较分析,结果显示,R2S方法与实验吻合得非常好,最大误差大约为15％,而且,相对于D1S方法(最大误差为25％)而言更准确。
A rigorous 2-step (R2S) method has been developed to calculate the shutdown dose rates in full three-dimensional geometry. Based on the Monte Carlos code MCNP and automated interfaces, this method has been successfully validated by the ITER shutdown dose rate experiment T-426 and compared with the direct 1-step (D1S) method. Both methods show good agreement with the experiment and R2S gives more reliable estimation compared to D1S. The results imply that R2S method can be applied in shutdown dose rates calculation of large and complex nuclear fusion devices.
出处
《核技术》
CAS
CSCD
北大核心
2003年第10期763-766,共4页
Nuclear Techniques
关键词
严格两步法
蒙特卡罗方法
停机剂量率
核聚变
Rigorous-2-step method, Monte Carlo method, Shutdown dose rate, Nuclear fusion
