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首页> 外文期刊>Physical Review. Accelerators and Beams >Transverse modes and instabilities of a bunched beam with space charge and resistive wall impedance
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Transverse modes and instabilities of a bunched beam with space charge and resistive wall impedance

机译：具有空间电荷和电阻壁阻抗的束状光束的横向模式和不稳定性

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Transverse instability of a bunched beam is investigated with synchrotron oscillations, space charge tune shift, and resistive wall wakefield taken into account. A boxcar model is used for a general analysis, and truncated Gaussian distribution is invoked for details. The beam spectrum, instability growth rate, and effects of chromaticity are studied in a wide range of parameters, both with head-tail and collective bunch interactions included. Influence of internal bunch oscillations on the collective instabilities is investigated thoroughly. Landau damping caused by the space charge tune spread is discussed, and the instability thresholds of different modes of truncated Gaussian bunch are estimated.
机译：研究了束束的横向不稳定性，其中考虑了同步加速器振荡，空间电荷调谐偏移和电阻墙尾流场。将Boxcar模型用于一般分析，并调用截断的高斯分布以获取详细信息。在包括头尾和集体束相互作用在内的各种参数下，研究了光束光谱，不稳定性增长率和色度的影响。彻底研究了内部束振动对集体不稳定性的影响。讨论了由空间电荷调谐扩散引起的兰道阻尼，并估计了截断高斯束的不同模式的不稳定性阈值。

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