一种条纹变像管静态电子光学聚焦特性数值模拟

 对ICF实验中条纹相机的重要组件变像管的工作过程进行了介绍，建立了其内部电子光学系统模型，对其静态电子光学特性进行了数值模拟。模拟软件采用ANSYS，数值计算基于有限元数值计算方法，并利用哈密顿原理求解泛函，在控制计算精度的基础上，得出了该电子光学系统的内部静电场分布和轴上电位分布，同时对静态条件下的电子轨迹进行了模拟计算。结果显示了与理论解析结果很好的相似性，同时初步探索了电极尺寸及电压参数对成像的影响。结果表明，电压参数的改变对光电子成像的影响要更大一些。

Numerical simulation of streak ICT electron optics focusing characteristics

The image converter tube is a core component in the streak cameras. Its operation was introduced and the model for its internal electronic optical system was built. Numerical simulations were done by ANSYS based on the finite element method, in which the functional is solved by Hamilton principle. The distribution of the electrostatic field was calculated in an operation voltage and the tracks of electrons were calculated in different operation voltages. The results agree well with that of the symmetric electrostatic field theoretical analysis. They also indicate that the size and shape of electrode has a slight influence on imaging, and the proper voltages(containing accelerating, focusing and anode voltages) has more.