该文介绍了二阶有限元方法的基本理论,同时将其应用到3维微波管模拟器套装(Microwave Tube Simulator Suite,MTSS)中的电子光学模拟器(Electron Optics Simulator,EOS)。比较了EOS分别采用一阶和二阶有限元方法的计算结果,得到了二阶具有更好的收敛性以及更快的收敛速度的结果。
In this paper,3D second-order finite element method for electron optic system is presented.And it is implemented in Electron Optics Simulator(EOS).The results are compared between first-order finite element method and second-order finite element method.Second-order finite element method has better convergence and faster convergence rate.