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

LOW ENERGY ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS

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

YU Haijun，

WENG Jiaqiang，

BAI Long

Nuclear Science and Techniques

Vol.19, No.6

pp.325-328

Published in print 20 Dec 2008

DOI：10.1016/S1001-8042(09)60012-9

CLC：TL501+.5

38901

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.

Beam halo-chaosHackle periodic-focusing magnetic fieldPower function

References

[1]

Glckstern R L. Phys Rev Lett, 1994, 73(9): 1247-1250.

[2]

Chiping C, Ronald C D. Phys Rev E, 1994, 49(6): 5679-5687.

[3]

Chiping C, Ronald C D. Phys Rev Lett, 1994, 72(14): 2159-2198.

[4]

Boccaletti S, Grebogi C, Lai Y C, et al. Phys Rep, 2000, 329: 103-197.

[5]

FANG Jinqing, CHEN Guanrong. High Power Laser Part Beams (in Chinese), 2000, 12(5): 647-651.

[6]

FANG Jinqing, CHEN Guanrong, ZHOU Liulai, et al. Prog Nat Sci, 2001,11(2):113-120.

[7]

FANG Jinqing, CHEN Guanrong, LUO Xiaoshu. Int J Bifurcation Chaos, 2002, 12(5):917-930.

[8]

FANG Jinqing, WANG Zhongsheng, CHEN Guanrong. Commun Theor Phys (in Chinese), 2004, 42(4): 557-560.

[9]

FANG Jinqing, GAO Yuan, WENG Jiaqiang, et al. Acta Phys Sin, 2001, 50(3):435-440.

[10]

ZHOU Lunwu, WENG Jiaqiang, GAO Yuan, et al. Acta Phys Sin, 2002, 51 (7): 1483-1488.

[11]

FANG Jinqing, YU Xinghuo, CHEN Guanrong. Chin Phys Lett (in Chinese), 2003, 20 (12): 2110-2113 .

[12]

GAO Yuan, LUO Xiaoshu, WENG Jiaqiang. Commun Theor Phys (in Chinese), 2004, 42(1): 64-68.

[13]

BAI Long, ZHANG Rong, WENG Jiaqiang, et al. Chin Phys (in Chinese), 2006, 15(3):1226-1230.

[14]

YU Haijun, BAI Long, WENG Jiaqiang, et al. Chin Phys Lett (in Chinese), 2008, 25(3): 862-865.