中国物理B ›› 2006, Vol. 15 ›› Issue (6): 1226-1230.doi: 10.1088/1009-1963/15/6/016
方锦清1, 翁甲强2, 罗晓曙2, 白龙3, 张荣3
Bai Long (白龙)a, Zhang Rong (张荣)a, Weng Jia-Qiang (翁甲强)b, Luo Xiao-Shu (罗晓曙)b, Fang Jin-Qing (方锦清)c
摘要: The K-V beam through an axisymmetric uniform-focusing channel is studied using the particle--core model. The beam halo-chaos is found, and a sample function controller is proposed based on mechanism of halo formation and strategy of controlling halo-chaos. We perform multiparticle simulation to control the halo by using the sample function controller. The numerical results show that our control method is effective. We also find that the radial ion density changes when the ion beam is in the channel: not only can the halo-chaos and its regeneration be eliminated by using the sample function control method, but also the density uniformity can be found at the beam's centre as long as an appropriate control method is chosen.
中图分类号: (Numerical simulations of chaotic systems)