8mm三次谐波潘尼管的理论设计与粒子模拟研究

Theoretical Design and Simulation of 8 mm-Band Third-Harmonic Slotted Peniotron

潘尼管是利用电子在高频结构中的位置选择机制实现注波净能量交换的回旋器件,具有高效率与低磁场的显著特点。本文在简述其基本原理的基础上,研究了其设计理论与方法,进行了相应的数值计算,设计了一只8 mm波段三次回旋谐波潘尼管:采用4开槽渐变到圆波导的开放式谐振腔高频结构,2π工作模式,束电压43.5 kV,束电流1.45 A,最后采用3D-PIC模拟软件进行验证、优化。模拟结果显示,该器件可获得37.8 kW平均输出功率,器件效率可达到60%,展示了其作为高效永磁包装器件的良好应用前景。

The 8 mm-band,third-harmonic slotted peniotron was theoretically designed,based on its operating principle,and the electron motion was simulated,with the 3dimension particle-in-cell（3D-PIC） simulation software package.The prototyped,8 mm-band,third-harmonic peniotron,with an axis-encircling electron beam of 43.5 kV and 1.45 A,was fabricated.The peniotron works in the 2π mode,and its slotted four vanes were asymptotically tapered into the cylindrical waveguide.The 3D-PIC simulation was performed to test and optimize the design.The simulated results show that the newly-developed peniotron has an average power output of 37.8 kV,an efficiency of 60% at an operating magnetic field of 0.396 T.The possible applications of the newly-developed peniotron were also tentatively discussed.