5MHU医用CT球管电子发射系统的二维模拟  

2D-Simulation of Electron Optics for a 5MHU Medical CT Tube

作　　者：寇建勇[1] 王瑞海[1] 王宇红[1] 张富治[1] 盛兴[1] 

机构地区：[1]北京真空电子技术研究所,北京100015

出　　处：《真空电子技术》2016年第1期14-16,共3页Vacuum Electronics

摘　　要：医用CT球管作为CT机的核心部件之一,电子发射系统是其设计的关键部分。本文描述了5MHU医用CT球管的电子发射系统的二维模拟计算,并且利用模拟工具探讨了焦斑尺寸与球管电压电流的关系。本文的计算结果和结论都得到了很好的实测验证。Design of electron optics is a key procedure in the reasearch development of a medical CT tube.The simulation of electron optics is discribed in this paper,and the relation between the size of focal spot and tube voltage/current in CT tube is also studied using simulation.The results and conclusions in the paper have been verified by experiments.

关 键 词：CT球管 焦斑 模拟仿真 

分 类 号：TN14[电子电信—物理电子学]