论文部分内容阅读
提出了一种新的利用缓变倒向场获得大回旋电子注的设计方法,在分析缓变倒向场中电子的运动规律和引起偏心与速度零散的各种原因的基础上,设计了一支大回旋电子枪.与传统设计思路不同,这种大回旋电子枪既不追求形成薄的管状电子束,又不追求突变的倒向磁场,因而极大降低了制管工艺和结构复杂性;阴极发射带可以位于倒向点前的轴向磁场幅值渐减区域,通过控制各条轨迹起始点的正则角动量差异,并利用多种不利因素的相互抵消作用来减小偏心与速度零散.模拟计算结果与理论分析一致,表明通过微调电磁场使各种不利因素相互抵消可以显著提高大回旋电子束质量,证实了减小偏心与速度零散的调节方法的有效性和实用性.这为高效率大回旋毫米波器件所需的高质量大回旋电子枪提供了一条新的技术途径.
A new design method of obtaining large gyroscope electron injection using slow-down field is proposed. Based on the analysis of the laws of electrons moving slowly into the field and the various causes of eccentricity and speed, Support large gyro gun.Different from the traditional design ideas, such a large gyro gun does not pursue the formation of a thin tube electron beam, but not the pursuit of mutation of the reverse magnetic field, thus greatly reducing the tube manufacturing process and structural complexity; cathode emission The band can be located in the decreasing area of the axial magnetic field before the backward point. By controlling the difference of the regular angular momentum at the starting point of each trajectory and reducing the eccentricity and velocity dispersion by the mutual offset of various unfavorable factors, the simulation calculation The results are consistent with the theoretical analysis, indicating that by adjusting the electromagnetic field so that various adverse factors offset each other can significantly improve the quality of large cyclotron electron beam, confirming the reduction of eccentricity and speed of the scattered adjustment method is valid and practical. The high quality large gyro gun required for millimeter-wave devices offers a new technological approach.