Chinese Physics C > 1998, Vol. 22 > Issue(10): 943-950

Simulation of Halo Formation in Breathing Round Beams in a Uniform or Periodic Focusing Channel

Huang Zhibin^,,
Chen Yinbao

China Institute of Atomic Energy.Beijing102413

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Abstract：
It is shown that beam self-field effects induce nonlinear resonances and chaotic behavior in uniform or periodic focusing channel by means of particle-core model and Poincare mapping technique. In order to explore self-consistently the fundamental properties of breathing round beams propagating in a uniform channel, the initial phase-space distribution of a beam injected into a linac is adopted to be a sufficiently realistic distribution such as Gaussian, waterbag and parabolic distribution Multiparticle simulations are performed and a series of results such as halo intensity and emittance growth are obtained.

References

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Gluckstem Robert L. Phys. Rev. LetL, 1994, 73(9): 1247-1250[2]0' Connel J S, Wangler T P, Mill R S et al. Proc. 1993 Particle Accelerator Conf. Washington D C,1993. 3657-3659[3]Chen C, Davidson R C. Phys. Rev. Lett., 1994, 72(14):2195-2198[4]Kapchinskij I M, Vladimirskij V V. in Proceedings of the International Conference on High EnergyAccelerators. CERN, Geneva, 1959[5]Reiser M. Theory and Design of Charged Particle Beams. John Wiley Sons, Inc, 1994. 224-227[6]Lagniel M. Nucl. Instrum. Methods Phys. Res., 1994, A345(3):405-410[7]Okamoto H, Ikegami M. Phys. Rev., 1997, E55(4):4694-4705[8]Gluckstem Robert L, Cheng W-H, Kurennoy S S et al. Phys. Rev., 1996, E54(6):6788-6797

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Huang Zhibin and Chen Yinbao. Simulation of Halo Formation in Breathing Round Beams in a Uniform or Periodic Focusing Channel[J]. Chinese Physics C, 1998, 22(10): 943-950.

Huang Zhibin and Chen Yinbao. Simulation of Halo Formation in Breathing Round Beams in a Uniform or Periodic Focusing Channel[J]. Chinese Physics C, 1998, 22(10): 943-950. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Simulation of Halo Formation in Breathing Round Beams in a Uniform or Periodic Focusing Channel

Huang Zhibin^,
Chen Yinbao

Corresponding author:Huang Zhibin,

China Institute of Atomic Energy.Beijing102413

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1998-10-05

Abstract:It is shown that beam self-field effects induce nonlinear resonances and chaotic behavior in uniform or periodic focusing channel by means of particle-core model and Poincare mapping technique. In order to explore self-consistently the fundamental properties of breathing round beams propagating in a uniform channel, the initial phase-space distribution of a beam injected into a linac is adopted to be a sufficiently realistic distribution such as Gaussian, waterbag and parabolic distribution Multiparticle simulations are performed and a series of results such as halo intensity and emittance growth are obtained.