加速器驱动系统的靶物理计算分析  

Analysis of Target Physics in Accelerator-Driven System

作　　者：王育威[1] 杨永伟[1] 崔鹏飞[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《原子能科学技术》2011年第9期1065-1069,共5页Atomic Energy Science and Technology

基　　金：清华大学自主科研项目资助(20091081263)

摘　　要：通过分析ADS对靶的要求,选LBE(铅铋共熔体)作为ADS靶材料,采用MCNPX程序计算和分析不同半径的质子束流入射不同半径和高度的靶时中子产生数、靶的中子泄漏能谱、靶不同位置的泄漏中子数以及整个靶的泄漏中子总数。选定靶参数,然后通过SSW卡和SSR卡连接MCNPX和MCNP程序,模拟计算1个质子与靶反应直到被燃料利用的整个过程,并提出质子效率的概念,采用欧洲MUSE-4燃料,对靶在堆芯中的位置和靶在堆芯中的半径大小对质子效率的影响进行了计算研究,给出了最大化质子效率时靶在堆芯中的位置和靶半径大小的方案。Through the analysis of requirements of ADS on the target,LBE（lead bismuth eutectic） was selected as the ADS target materials.With different radii and heights of the target,the energy spectrum,the number in different locations and the total number of neutron leakage were calculated by MCNPX.As SSR and SSW cards connected the MCNPX and MCNP,the history of a proton started from the target reaction was simulated.The concept of proton efficiency was put forward.When the total power and keff keep constant,increasing the proton efficiency will solve one of the difficult aspects of ADS.Combining the specific conditions of the target＇s location and variation of the target＇s radius in the reactor core,statistics data were obtained by MCNP.The conclusions are drawn to maximize the efficiency of the proton,and then combined with ADS＇s characteristics,the design optimization program of the target was proposed.

关 键 词：加速器驱动系统 散裂中子靶 质子效率 

分 类 号：TL503.4[核科学技术—核技术及应用]