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.

• 摘要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。