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对脉冲栅控行波管来说抑制束流的波动尤为重要。本文使用MTSS分析了栅网参数和阳极参数对电子注参数的影响,设计了性能良好的脉冲栅控行波管电子枪。为了保证由电子枪提供的电子注能够较平稳地通过互作用区,通过Maxwell2D设计了带开口磁钢的周期永磁聚焦系统,分析了等幅、增幅和幅值无规则变化三种过渡区磁场电子注波动分别随磁场起始位置的变化。结果表明采用增幅过渡区,通过优化磁场增幅以及磁场起始位置,能够有效地减小电子注波动,降低外层电子的离散,改善栅网的透镜效应带来的层流性差的问题。
It is particularly important to suppress the ripple of the beam in a pulse-gated TWT. In this paper, MTSS is used to analyze the influence of grid parameters and anode parameters on the electron injection parameters, and a pulse-controlled TWT electron gun with good performance is designed. In order to ensure that the electron injection provided by the electron gun can pass through the interaction region smoothly, the permanent magnet focusing system with open magnet was designed by Maxwell2D. The magnetic field electrons in three transitional regions of equal amplitude, amplitude and amplitude were analyzed. Note fluctuations with the magnetic field starting position changes. The results show that by using the transition region of increasing amplitude, by optimizing the magnetic field amplitude and the starting position of the magnetic field, the electron injection wave can be effectively reduced, the dispersion of outer electrons can be reduced, and the laminar flow caused by the lens effect of the grid can be improved.