Controlling beam halo-chaos via sliding mode variable structure adjusting exterior magnetic field

gao yuan; kong feng; tian jing-bei

Volume 20 Issue 06

Jun. 2008

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Article Navigation > High Power Laser and Particle Beams > 2008 > 20(06): 0-

huang xiu-guang, fu si-zu, wu jiang, et al. Experimental researches on planarity of shock wave directly driven by 2ω laser beam of “Shenguang-Ⅱ” facility[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

gao yuan, kong feng, tian jing-bei. Controlling beam halo-chaos via sliding mode variable structure adjusting exterior magnetic field[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

gao yuan, kong feng, tian jing-bei. Controlling beam halo-chaos via sliding mode variable structure adjusting exterior magnetic field[J]. High Power Laser and Particle Beams, 2008, 20.

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Controlling beam halo-chaos via sliding mode variable structure adjusting exterior magnetic field

1.
Department of Electronic Information and Control Engineering,Guangxi University of Technology,Liuzhou 545006,China

Publish Date: 2008-06-15

Abstract

Abstract

A sliding mode variable structure control method was studied for controlling beam halo-chaos in the periodic focusing channels(PFCs) of high-current ion accelerator. The sliding mode variable structure controller based on Lyapunov function theory was presented. The analysis and simulation results demonstrate that the chaotic radius of envelope can be controlled to the matched radius via adjusting exterior focusing magnetic field. This method was also applied to the multi-particle model of the beam with the K-V distribution in the PFCs. Under the mono-periodical interval control condition, the average transverse emittances of ion beam was decreased by about 80%, the beam halos and its regeneration could be eliminated, the qualities of high current beam become better. This method is easy to
- high-current ion beam,
- beam halo-chaos,
- chaos control,
- sliding mode control

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