Control of beam halo-chaos by sample function

白龙,; 张荣,; 翁甲强,; 罗晓曙,; 方锦清,

doi:10.1088/1009-1963/15/6/016

Cited by 11 publications

(1 citation statement)

References 7 publications

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“…The loose particles in beam are compressed to the core field, and the particles become concentrative after the halo-chaos is controlled, thus the halo-chaos is suppressed. [16,17] Fig. 2 Fraction power-law function.…”

Section: Numerical Methods and Controllermentioning

confidence: 99%

Control of Beam Halo-Chaos by Fraction Power-Law Function in Hackle Periodic-Focusing Channel

Yu¹,

Bai²,

Jia-Qiang³

et al. 2008

Commun. Theor. Phys.

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The Kapchinsky-Vladimirsky (K-V) beam through a hackle periodic-focusing magnetic field is studied using the particle-core model. The beam halo-chaos is found, and an idea of fraction power-law function controller is proposed based on the mechanism of halo formation and the strategy of controlling halo-chaos. The method is applied to the multi-particle simulation to control the halo. The numerical results show that the halo-chaos and its regeneration can be eliminated effectively by using the fraction power-law function control method. At the same time, the radial particle density is uniform at the beam's center as long as the control method and appropriate parameter are chosen.

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Section: Numerical Methods and Controllermentioning

confidence: 99%

Control of Beam Halo-Chaos by Fraction Power-Law Function in Hackle Periodic-Focusing Channel

Yu¹,

Bai²,

Jia-Qiang³

et al. 2008

Commun. Theor. Phys.

Self Cite

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Control of Beam Halo-Chaos for an Intense Charged-Particle Beam Propagating Through Double Periodic Focusing Field by Soliton

Bai

Zhang

Jia-Qiang

et al. 2008

Commun. Theor. Phys.

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We study an intense beam propagating through the double periodic focusing channel by the particle-core model, and obtain the beam envelope equation. According to the Poincare-Lyapunov theorem, we analyze the stability of beam envelope equation and find the beam halo. The soliton control method for controlling the beam halo-chaos is put forward based on mechanism of halo formation and strategy of controlling beam halo-chaos, and we also prove the validity of the control method, and furthermore, the feasible experimental project is given. We perform multiparticle simulation to control the halo by using the soliton controller. It is shown that our control method is effective. We also find the radial ion density changes when the ion beam is in the channel, not only the halo-chaos and its regeneration can be eliminated by using the nonlinear control method, but also the density uniformity can be found at beam's centre as long as an appropriate control method is chosen.

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Control of Beam Halo-Chaos Based on Self-Field-Intensity of Particle Beam

Yu¹,

Bai²,

Jia-Qiang³

et al. 2008

Chinese Phys. Lett.

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The KV beam through an axisymmetric periodic-focusing magnetic field is studied using the particle-core model. A new variable of the self-field-intensity of particle beam is selected, and an idea of self-field feedback controller is proposed based on the variable for controlling the halo-chaos. We perform multiparticle simulation to control the halo by using the self-field feedback controller. The numerical results show that the halo-chaos and its regeneration can be eliminated effectively, and that the density uniformity can be found at the centre of beam as long as an appropriate control method is chosen. The control method may be operated in the experiment, because field intensity measurement is easy.

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Control of beam halo-chaos by sample function

Cited by 11 publications

References 7 publications

Control of Beam Halo-Chaos by Fraction Power-Law Function in Hackle Periodic-Focusing Channel

Control of Beam Halo-Chaos by Fraction Power-Law Function in Hackle Periodic-Focusing Channel

Control of Beam Halo-Chaos for an Intense Charged-Particle Beam Propagating Through Double Periodic Focusing Field by Soliton

Control of Beam Halo-Chaos Based on Self-Field-Intensity of Particle Beam

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