文章改变以往习惯于以离子束均方根半径等为控制变量的束晕-混沌模拟控制方法,取匹配半径外离子数与总离子数之比为控制变量,并构造一对数函数控制器,以进行束晕-混沌控制的模拟研究。结果显示,新的控制方法对强流加速器中5种初始分布的离子束均有较好的控制效果。由于此方法只需探测跨越匹配半径的离子数,在实验上有实施的可能。
The ratio of the numbers of ions outside the match radius to the total ion numbers, not root-mean-square radius or others, is selected as variable to simulate the control of beam halo-chaos in high intensity accelerator. Beam halo-chaos for five different initial ion distributions is effectively controlled by a logarithm-function controller based on the variable. The control method may be operational in experiment, because it only needs to probe how many ions are outside the match radius.