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The comparison of the elements for the homogenizing charged particle irradiation

Published online by Cambridge University Press:  15 March 2011

J.H. Li  and
X.Y. Ren
J.H. Li*
Affiliation:
China Institute of Atomic Energy, Beijing, China
X.Y. Ren
Affiliation:
China Institute of Atomic Energy, Beijing, China
*
Address correspondence and reprint requests to: Jinhai Li, China Institute of Atomic Energy, P.O. Box 275-17, Beijing 102413, China. E-mail: lijh@ihep.ac.cn
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Abstract

Particle beams with uniform and well-confined intensity distributions are desirable in some high power beam applications to prolong the target lifetime or to improve the beam utilization. Three kinds of elements had been proposed for the beam homogenizing, such as octupole, pole-piece magnet, and step-like nonlinear magnets. In this paper, the new type of elements called heteromorphic quadrupole and focus sextupole are proposed. The Gaussian-like multiparticle beam redistribution by the octupole, heteromophic quadrupole, step-like nonlinear magnets, and focus sextupole has been simulated by the POISSON and LEADS code. The best redistribution result is obtained by the focus sextupole, and one of the solutions of redistributing beam with big halo can be that of using the focus sextupole and the heteromorphic quadrupole.

Keywords

Focus sextupoleHeteromorphic quadrupoleOctupoleParticle beam homogenizingStep-like nonlinear magnet
Type
Research Article
Information
Laser and Particle Beams , Volume 29 , Issue 1 , March 2011 , pp. 87 - 94
Copyright
Copyright © Cambridge University Press 2011

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References

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