Control of beam halo-chaos by Gauss function in the triangle periodic-focusing channel  

作　　者：余海军 白龙 翁甲强 罗晓曙 方锦清 

机构地区：[1]Department of Physics,Huainan Normal University [2]College of Science,China University of Mining and Technology [3]College of Physics and Information Technology,Guangxi Normal University [4]China Institute of Atomic Energy

出　　处：《Chinese Physics B》2008年第7期2433-2437,共5页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No 10247005);the Natural Science Foundation of the Anhui Higher Education Institutions of China (Grant No KJ2007B187);the Scientific Research Foundation of China University of Mining and Technology for the Young (Grant No OK060119)

摘　　要：This paper studies the Kapchinsky-Vladimirsky （K-V） beam through a triangle periodic-focusing magnetic field by using the particle-core model. The beam halo-chaos is found, and an idea of Gauss function controller is proposed based on the strategy of controlling the halo-chaos. It performs multiparticle simulation to control the halo by using the Gauss function control method. The numerical results show that the halo-chaos and its regeneration can be eliminated effectively, and that the radial particle density is uniform at the centre of the beam as long as the control method and appropriate parameter are chosen.This paper studies the Kapchinsky-Vladimirsky （K-V） beam through a triangle periodic-focusing magnetic field by using the particle-core model. The beam halo-chaos is found, and an idea of Gauss function controller is proposed based on the strategy of controlling the halo-chaos. It performs multiparticle simulation to control the halo by using the Gauss function control method. The numerical results show that the halo-chaos and its regeneration can be eliminated effectively, and that the radial particle density is uniform at the centre of the beam as long as the control method and appropriate parameter are chosen.

关 键 词：beam halo-chaos triangle periodic-focusing magnetic field Gauss function 

分 类 号：O415.5[理学—理论物理] O231[理学—物理]