Collective emittance exchange with linear space charge forces and linear coupling.
Collective emittance exchange with linear space charge forces and linear coupling.
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DOI：
10.1103/physrevlett.94.194801
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发表时间：
2005-05
影响因子：
8.6
通讯作者：
G. Franchetti;I. Hofmann;M. Aslaninejad
中科院分区：
文献类型：
--
作者：
G. Franchetti;I. Hofmann;M. Aslaninejad
我们发现，明显的集体非线性行为是目前在一个光束与线性耦合和空间电荷所描述的完整的二阶矩方程。集体效应导致发射度转移中的位移和加宽的谐振条件以及饱和效应。对于慢阻带交叉的光束演变沿着一个倾斜的匹配的解决方案与全发射度交换或交换是由集体空间电荷效应阻碍，这取决于发射率比和交叉方向。
We show that pronounced collective nonlinear behavior is present in a beam with linear coupling and space charge as described by the complete second order moment equations. The collective effects result in a shifted and broadened resonance condition as well as saturation effects in the emittance transfer. For slow stop-band crossing either the beam evolves along a skewed matched solution with full emittance exchange or the exchange is hindered by collective space charge effects, depending on the emittance ratio and direction of crossing.