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回旋行波管是大功率、高频率的微波毫米波器件。根据W波段回旋行波管的要求,设计了双阳级磁控注入电子枪。由电子光学理论,计算得到电子枪的初始参量,然后利用粒子模拟软件MAGIC构造电子枪模型,分析电子枪各个参数对电子注性能的影响,为电子枪设计优化提供了一定的依据。最后优化得到符合设计要求的低速度零散电子枪结构。电子枪阳极电压为70kV,电流10A,电子注速比1.07,电子注横向速度零散0.8%。
Swirling traveling wave tube is a high power, high frequency microwave millimeter wave device. According to the requirements of the W-band gyrotron traveling wave tube, a double-positron-type magnetron injection electron gun is designed. Based on the theory of electron optics, the initial parameters of the electron gun are calculated. Then the electron gun model is constructed by the particle simulation software MAGIC, and the influence of the parameters of the electron gun on the electron injection performance is analyzed, which provides a basis for the design and optimization of the electron gun. Finally, the design of low-speed scattered electron gun structure is optimized. Electron gun anode voltage of 70kV, current 10A, electronic injection rate than 1.07, electron injection lateral velocity of 0.8%.