回旋波整流器能量转换区的数值模拟

Numerical calculation of conversion region in cyclotron wave converter

分析了电子在能量转换区的运动,列出了电子的运动方程,对电子运动方程进行了数值计算。通过对能量转换区的数值模拟,计算了电子注半径、初始能量比、能量转换区长度、磁场分布等不同的参数对能量转换的影响。结果表明:在电子束半径和回旋半径比为0.25、横向和纵向能量比为2.83、归一化长度为3、非对称系数为-0.1时,转换效率可以达到90%以上。

The motion of the electron in the conversion region has been analysed. The equations of the electron motion are given and calculated. The effects of the beam radius, the initial energy ratio, the length of the conversion region and the magnetic field are taken into account in the numerical simulation. When the ratio of the beam radius to the cyclotron radius is 0.25, the ratio of the transversal energy to the longitudinal energy is 2.83, the unitary length is 3 and the nonlinearity coefficient is -0. 1, and the conversion efficiency can reach 90 %.