EAST托卡马克装置上TOF谱仪屏蔽体设计的模拟计算  

Simulation Computing About Shield for TOF Spectrometer Used on EAST Tokamak

作　　者：李忠宝[1] 彭太平[1] 胡青元[1] 胡孟春[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,绵阳621900

出　　处：《核电子学与探测技术》2014年第1期54-58,共5页Nuclear Electronics & Detection Technology

摘　　要：采用中子飞行时间谱仪测量EAST装置上的中子能谱时,对于散射量的屏蔽是能否得到有效数据的关键。本文利用三维蒙特卡罗输运程序,通过对EAST托卡马克装置的细致建模,对大厅环境的散射量进行了模拟计算,在考虑了各散射体贡献的基础上,采用叠代计算的方法,提出了满足双晶TOF谱仪屏蔽体的优化设计方案,为后续EAST装置上TOF的有效运行提供了关键技术支持。When the neutron energy spectrum of EAST tokamak is measured by TOF spectrometer , it is the key that how to shield scattering neutrons and secondary gamma .In the paper , a sophisticated computational model is developed on the basis of the geometrical structure of EAST tokamak and amount of scattering is obtained in accordance with the model .By means of iteration calculation the optimal shield solution is obtained that is used for TOF spectrometer .This work is very important for the neutron spectrum measurement on EAST .

关 键 词：核聚变 托卡马克 全超导托卡马克核聚变装置 中子飞行时间谱仪 散射 屏蔽体 MCNP5 

分 类 号：TL817[核科学技术—核技术及应用]