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强流电子注速度测量及分析对真空电子器件的研究与设计具有重要的意义。本文提出了一种利用圆柱形结构的电容性感应探针进行非拦截式强流电子注轴向平均速度测量的方法,通过对电子注电流及其空间电荷效应感应出的电压的测量,可以得到电子注的轴向平均速度随时间的变化关系。完成了工程化设计以及测量系统的研制,并对某型号电子枪产生的实际电子注进行了测量,给出了初步的试验结果,验证了该测量方法和系统的有效性,并讨论了系统进一步改进的方案。
The measurement and analysis of strong current electron injection velocity is of great significance to the research and design of vacuum electronic devices. In this paper, we propose a method to measure the axial average velocity of non-intercepting high current electrons by using a cylindrical capacitive sensing probe. By measuring the voltage induced by the electron injection current and its space charge effect, Electronic injection of the axial average speed over time relationship. Completed the engineering design and the development of measurement system, and measured the actual electron injection produced by a certain type of electron gun. The preliminary test results were given, the validity of the measurement method and system was verified, and the further improvement of the system was discussed Program.