Halo formation in three-dimensional bunches

被引:49
作者
Gluckstern, RL [1 ]
Fedotov, AV
Kurennoy, S
Ryne, R
机构
[1] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
[2] Univ Calif Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr Div, Los Alamos, NM 87545 USA
来源
PHYSICAL REVIEW E | 1998年 / 58卷 / 04期
关键词
D O I
10.1103/PhysRevE.58.4977
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
We have constructed, analytically and numerically, a class of self-consistent six-dimensional (6D) phase space stationary distributions. Stationary distributions allow us to study the halo development mechanism without it being obscured by beam redistribution and its effect on halo formation. The beam is then mismatched longitudinally and/or transversely,and we explore the formation of longitudinal and transverse halos in 3D axisymmetric beam bunches. We find that the longitudinal halo forms first for comparable longitudinal and transverse mismatches because the longitudinal tune depression is more severe than the transverse one for elongated bunches. Of particular importance is the result that, due to the coupling between longitudinal and transverse motion, a longitudinal or transverse halo is observed for a mismatch less than 10% if the mismatch in the other plane is large. [S1063-651X(98)05410-5].
引用
收藏
页码:4977 / 4990
页数:14
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