相对论Klystron双流放大器电子注的成形
Formation of electron beams in relativistic klystron two-stream amplifier
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摘要: 相对论双流放大器是一种结构简单、高效率的高功率微波器件。其作用机理是沿同一方向传播的两束同心的环形电子束之间的双流不稳定性。这种双流不稳定性导致两个电子束之间的能量交换，最后由输出腔变成微波放大输出。相对论双流放大器成功的关键之一就是同一方向传播的两束同心的环形电子束的成形，利用MAGIC粒子模拟程序，对相对论双流放大器电子注的成形进行了粒子模拟。通过粒子模拟，证实了选择合适的参数来形成两束环形同心束是可行的。Abstract: The relativistic two-stream amplifier (RTSA) is a kind of high power microwave device with simple geometrical structure and high efficiency. Its working mechanism is the two-stream instability between the two concentric circular beams, which propagates through the waveguide along the same direction. This two-stream instability generates the energy exchange between the electron beams. Pumped by the output cavity, the energy of electron beams generates the microwave power amplification. The microwave is input by the cavity of RTSA. It is critical issue to generate such two electron beams to be emitted into the waveguide. By using the MAGIC PIC simulation program. The formation of electron beams in RTSA is simulated and some of the key parameters is got. The results show that it is available
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