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结合时域有限差分方法和粒子模拟方法,开发了螺旋线行波管的三维注-波互作用粒子模拟程序。从最基本的电磁场运动规律和力学规律出发,利用高速计算机直接求解完整的麦克斯韦方程组和洛伦兹方程,完成了对C波段螺旋线行波管的注-波互作用的模拟计算,得到了电子的相位和空间分布以及管子的功率、增益等电性能参量,验证了程序的正确性,为后期优化和设计奠定了基础。
Combined with the finite difference time domain method and the particle simulation method, a three-dimensional injection-wave interaction particle simulation program for helical traveling wave tube was developed. Starting from the most basic law of electromagnetic field motion and the law of mechanics, the complete Maxwell’s equations and Lorentz’s equations are solved directly by high-speed computer. The simulation of the injection-wave interaction of a C-band helical traveling wave tube is completed. Electronic phase and space distribution and power, gain and other electrical performance parameters of the tube, verify the correctness of the program, and laid the foundation for the latter part of the optimization and design.