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

• 来源期刊: 中国物理B（英文版）
• 关键词: beam halo-chaos triangle periodic-focusing magnetic field Gauss function
• 年，卷（期）: 2008,（7）
• 页码范围: 2433-2437
• 页数: 5页
• 语种: 英文

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.