杆控电子枪设计与优化

Design and Fabrication of Pole-Controlled Electron Gun

本论文由杆控电子枪的设计参数出发,通过一系列的公式变换将杆控电子枪的设计转换为实心注电子枪的设计,利用综合迭代法确定电子枪的几何尺寸,同时考虑电子枪尺寸对注腰半径、导流系数等参数的影响,建立了评价电子枪性能优劣的目标函数以评价设计效果,应用EGUN软件和单纯形法对目标函数求解,获得了较好的结果,该电子枪已经用于实际制管实验,根据电子注静态通过率和电子注动态通过率,对理论仿真结果和实际制管实验结果进行比较,实验结果与数值计算设计结果有较好的一致性。

A novel type of pole-controlled,hollow：beam electron gun has been successfully designed and fabricated with rigorous calculations and judicious choice of its physical variables. The influence of the electron gun geometry on the hidden variables, including its perveance, its beam waist, and its larninarity, was evaluated by means of directly measured results and by some theoretical derivation. The newly-developed, pole-controlled, hollow-beam electron gun has already been tested in fabrication of the traveling wave tubes （TWT）. The experimental results,such as the electron static transmission rate and the electron dynamic transmission rate, agree well with those of the simulation.