论文部分内容阅读
提出了一种增加回旋行波放大器带宽的新模型,其特点是适当地选取轴向引导磁场的初值并从相互作用区的给定位置开始使其缓慢地线性减小.该模型的输出带宽可达到已有宽带模型的水平,但效率有较大提高.对波束相互作用的物理机制进行了理论分析并用数值模拟的方法进行了证实.当电子束的电流为7A,电压为90kV,速率比为10,纵向动量散度为2%时,计算得到了20%的常数驱动带宽和42%的效率,输出的峰值功率和增益分别为260kW和47dB.
A new model for increasing the bandwidth of the gyro-traveling-wave amplifier is proposed, which is characterized by choosing the initial value of the axial guidance magnetic field appropriately and slowly and linearly decreasing from the given position in the interaction region. The output bandwidth Which can reach the level of the existing broadband model but the efficiency is greatly improved.The physical mechanism of the beam interaction is theoretically analyzed and verified by numerical simulation.When the electron beam current is 7A and the voltage is 90kV, Is 10, and the vertical momentum divergence is 2%, the constant drive bandwidth of 20% and the efficiency of 42% are calculated, and the output peak power and gain are 260kW and 47dB, respectively.