In this article, a collaborative design method for gyrotron magnetron injection gun (MIG) and solenoid is proposed for the first time. On this basis, the shape of the electrodes and solenoid sizes is optimized by the means of global optimization techniques. Simplified theory and numerical methods of MIG have been developed, and the results agree well with the PIC simulation. By using the new method, the calculation time is reduced and the numerical stability has been greatly improved compared with that directly solving the Lorentz equation. As an example, a helical electron beam with a velocity pitch ratio of 1.20 and a transverse velocity spread of 1.65% is obtained for G-band gyro-TWT.

中文翻译：

---

基于协同优化的G波段陀螺行波管磁控喷枪及螺线管设计,基于协同优化的G波段陀螺行波管磁控喷枪及螺线管设计

本文首次提出了回旋管磁控喷枪（MIG）与螺线管的协同设计方法。在此基础上，通过全局优化技术优化电极形状和螺线管尺寸。建立了MIG的简化理论和数值方法，结果与PIC模拟吻合良好。与直接求解洛伦兹方程相比，采用新方法减少了计算时间，数值稳定性大大提高。例如，对于 G 波段陀螺行波管，获得了速度螺距比为 1.20、横向速度扩展为 1.65% 的螺旋电子束。,本文首次提出了回旋管磁控喷枪（MIG）与螺线管的协同设计方法。在此基础上，通过全局优化技术优化电极形状和螺线管尺寸。建立了MIG的简化理论和数值方法，结果与PIC模拟吻合良好。与直接求解洛伦兹方程相比，采用新方法减少了计算时间，数值稳定性大大提高。例如，对于 G 波段陀螺行波管，获得了速度螺距比为 1.20、横向速度扩展为 1.65% 的螺旋电子束。