论文部分内容阅读
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。
The working process of image tube, which is an important component of streak camera in ICF experiment, is introduced. The internal electron optical system model is established and its static electron optical properties are numerically simulated. The simulation software uses ANSYS, the numerical calculation is based on the finite element numerical calculation method, and the Hamiltonian principle is used to solve the functional. Based on the control calculation accuracy, the distribution of the internal electrostatic field and the on-axis potential distribution of the electron optical system are obtained. Simultaneously The electron trajectory under static condition is simulated. The results show a very good similarity with the theoretical analysis results. Meanwhile, the effects of electrode size and voltage parameters on imaging are also discussed. The results show that the change of voltage parameter has more influence on photoelectron imaging.