光束在分离矩阵附近运动

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Pub Date : 1999-05-04 DOI:10.1109/PAC.1999.794169

M. Ball, B. Brabson, J. Budnick, C. Chu, D. Caussyn, J. Collins, V. Derenchuk, G. East, M. Ellison, D. Friesel, K. Fung, B. Hamilton, W. Hsi, H. Huang, W. Jones, S. Lee, D. Li, K. Ng, X. Pei, A. Riabko, T. Slaon

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引用次数: 2

摘要

分析了一维(1-D)四整数岛分离矩阵附近粒子运动的实验数据。当束束最初被踢到分离矩阵轨道时，我们观察到相干电子加速器运动中有很强的退相干。通过深入的粒子跟踪模拟分析，我们发现，退相干是由于束流在电子加速器相空间中分裂成小束流造成的。然而，我们也观察到相干信号的意想不到的重相干，这可能是由于调制的闭合轨道或在分离矩阵附近的同宿结构造成的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Beam motions near separatrix

Experimental data on particle motion near the separatrix of the one dimensional (1-D) fourth-integer islands are analyzed. When the beam bunch is initially kicked to the separatrix orbit, we observed a strong decoherence in the coherent betatron motion. We find that, through intensive particle tracking simulation analysis, the decoherence has resulted from the beam being split into beamlets in the betatron phase space. However, we also observe an unexpected recoherence of coherence signal, which may result form a modulated closed orbit or the homoclinic structure near the separatrix.

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Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)

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