Space charge induced resonance excitation in high intensity rings

被引:28
作者
Cousineau, S [1 ]
Lee, SY
Holmes, JA
Danilov, V
Fedotov, A
机构
[1] Indiana Univ, Bloomington, IN 47405 USA
[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[3] Brookhaven Natl Lab, Upton, NY 11973 USA
来源
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2003年 / 6卷 / 03期
基金
美国国家科学基金会;
关键词
D O I
10.1103/PhysRevSTAB.6.034205
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
We present a particle core model study of the space charge effect on high intensity synchrotron beams, with specific emphasis on the Proton Storage Ring (PSR) at Los Alamos National Laboratory. Our particle core model formulation includes realistic lattice focusing and dispersion. We transport both matched and mismatched beams through real lattice structure and compare the results with those of an equivalent uniform-focusing approximation. The effects of lattice structure and finite momentum spread on the resonance behavior are specifically targeted. Stroboscopic maps of the mismatched envelope are constructed and show high-order resonances and stochastic effects that dominate at high mismatch or high intensity. We observe the evolution of the envelope phase-space structure during a high intensity PSR beam accumulation. Finally, we examine the envelope-particle parametric resonance condition and discuss the possibility for halo growth in synchrotron beams due to this mechanism.
引用
收藏
页码:112 / 125
页数:14
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