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带状电子注真空器件是一种很有潜力的高功率微波毫米波器件,其中带状电子注的稳定传输和聚焦是该器件的关键。针对带状电子注的聚焦和传输,提出采用周期椭圆螺线管结构来稳定传输高椭圆率的带状电子注。通过理论分析,得到椭圆螺线管的磁场分布情况,研究了该磁场下带状电子注的运动情况,并且推导出带状电子注在周期椭圆螺线管结构中稳定传输的条件。最后,采用粒子模拟验证了该稳定传输条件。
The ribbon electron vacuum device is a promising high-power microwave millimeter-wave device, in which the stable transmission and focusing of the ribbon electron injection is the key of this device. Aiming at the focusing and transmission of banded electron injection, a periodic elliptical solenoid structure is proposed to stably transmit banded electron beams with high ellipticity. Through the theoretical analysis, the magnetic field distribution of the elliptical solenoid is obtained, and the movement of the banded electron injection under the magnetic field is studied. The condition of the banded electron injection in the periodic elliptical solenoid structure is derived. Finally, the steady-state transport conditions were verified by particle simulation.