【摘要】 系统地研究了周期磁聚焦束流传输网络中填充因子对强流离子加速器K V分布束晕 混沌控制效果的影响。通过数值模拟,确定了束晕 混沌控制效果较好的填充因子的取值范围为 0.75~0.99,从而把以往填充因子只凭经验取个别值的研究扩大到可在一个较大的范围取值。另外,还发现了填充因子取值为0.59~0.67时束截面上离子数密度分布由均匀分布变为沿径向出现一峰状分布现象,从而为离子束应用提供了新的参考。更多还原

【Abstract】 The effect of the filling factor on beam halo-chaos control for K-V distribution was studied. By numerical simulation, it is found that when the filling factor takes range value from 0.75 to 0.99, the control effect is well. Thus, the range of filling factor values are extended obviously. In addition, it is discovered that the ion density distribution along the radius and the beam section has a peak, although it is uniform initially. The study provides a new guidance for ion beam’s application.更多还原