Physical mechanism of beam halo-chaos formation for high-current proton beam in a periodic-focusing channels and a nonlinear control strategy

Citation
Jq. Fang et al., Physical mechanism of beam halo-chaos formation for high-current proton beam in a periodic-focusing channels and a nonlinear control strategy, PROG NAT SC, 11(1), 2001, pp. 6-15
Citations number
23
Language
INGLESE
art.tipo
Review
Categorie Soggetti
Multidisciplinary
Journal title
PROGRESS IN NATURAL SCIENCE
ISSN journal
1002-0071 → ACNP
Volume
11
Issue
1
Year of publication
2001
Pages
6 - 15
Database
ISI
SICI code
1002-0071(200101)11:1<6:PMOBHF>2.0.ZU;2-T
Abstract
The physical mechanism of the halo-chaos formation for a high intensity pro ton beam in a periodic-focusing channel is analyzed using the transfer matr ix theory and a qualitative analysis method. Particles-in-cell simulations are further used to explore the mechanism of the beam halo-chaos formation, which concerns not only with the nonlinear effect of the beam space charge but also with the transverse energy exchange between the particles and the particle-core, as well as the chaos generated by the nonlinear resonance o verlap. A nonlinear control method is proposed for controlling. the halo-ch aos. Simulation results show that the method is effective. Some potential a pplications of the halochaos control in experiments are discussed.