双频工作同轴双电子注回旋管的理论与实验研究（英文）

Theoretical and Experimental Investigations on a Dual-Frequency Operation Coaxial Gyrotron with Two Electron Beams

该文章研究双频工作同轴双电子注回旋管。数值计算和粒子模拟结果表明同轴双电子注回旋管可以同时工作在两个不同的频率,且由于两个电子注间的非线性耦合,高次回旋谐波所对应模式的功率显著增强。完成了双频工作的同轴双电子注回旋管的原理样管加工并进行了验证性实验,实验测得两个工作频率分别为0.11 THz和0.22 THz,输出功率20 k W,并提出了一种分离双频工作同轴双电子注回旋管中两个不同频率电磁波功率的方法。

The dual-frequency operation coaxial gyrotron with two electron beams is investigated in this paper. The results of the numerical calculation and particle in cell （PIC） simulation show that the coaxial gyrotron with two electron beams （CGTB） can operate at two different frequencies simultaneously. In addition, the power of the high harmonic can be enhanced due to the nonlinear coupling between two electron beams. The prototype of CGTB was fabricated and the verification experiment was conducted. The operation frequencies are at 0.11 THz and 0.22 THz, and the output power is about 20 kW. A method to separate the radiations from a dual-frequency operation gyrotron is also proposed.