利用抽样函数实现螺线聚焦管道中的束晕-混沌控制研究

Control of Beam Halo-chaos Through a Solenoidal Focusing Field by Using Sampling Function

根据束晕-混沌控制策略方法,利用具有非线性、收敛性的抽样函数构造控制器,对初始条件遵从K-V 分布的离子束进行了控制研究。结果表明,加控制后束晕强度因子变为零,束均方根半径、束横向动量平方和的平均值和束横向平均发射度比控制前都明显减小。利用该方法可实现束晕-混沌的有效控制。

A sampling function structural controller with nonlinear convergence is used to control the i- onic beam that its initial condition follows Kapchinskij-Vladimiskij(K-V)distribution. The result shows that the halo intensity factor becomes zero after it is controlled,other statistical physical quan- tities,such as r_(ms) and P^2 and related average emittances are obviously reduced. The method can be used to effectively control the beam halo-chaos.