Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2008, Vol. 19 ›› Issue (6): 325-328

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Simulation on control of beam halo-chaos by power function in the hackle periodic-focusing channel

YU Haijun1,* WENG Jiaqiang2 BAI Long3   

  1. 1 Department of Physics, Huainan Normal University, Huainan 232001, China 2 College of Physics and Information Technology, Guangxi Normal University, Guilin 541004, China 3 College of Science, China University of Mining and Technology, Xuzhou 221008, China
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YU Haijun, WENG Jiaqiang, BAI Long. Simulation on control of beam halo-chaos by power function in the hackle periodic-focusing channel.Nuclear Science and Techniques, 2008, 19(6): 325-328

Abstract: The K-V beam through a hackle periodic-focusing magnetic field is studied using the particle-core model. The beam halo-chaos is found, and a power function controller is proposed based on mechanism of halo formation and strategy of controlling halo-chaos. Multiparticle simulation was performed to control the halo by using the power function control method. The results show that the halo-chaos and its regeneration can be eliminated effectively. We also find that the radial particle density evolvement is of uniformity at the beam’s centre as long as appropriate parameters are chosen.

Key words: Beam halo-chaos, Hackle periodic-focusing magnetic field, Power function