arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1212.2103physics.acc-ph
收藏

强流重离子同步加速器横向调谐谱的解释

Interpretation of transverse tune spectra in a heavy-ion synchrotron at high intensities

R. Singh, O. Boine-Frankenheim, O. Chorniy, P. Forck, R. Haseitl, W. Kaufmann, P. Kowina, K. Lang, T. Weiland

摘要:

在GSI重离子同步加速器SIS-18上安装了两套不同的调谐测量系统。使用这些快速灵敏的系统可以获得高精度的调谐光谱。除了机器调谐外,光谱还包含与强度相关的相干调谐位移和非相干空间电荷调谐位移的信息。空间电荷调谐位移是从观测到的同步加速器卫星的位移位置与空间电荷的头-尾本征模的解析表达式拟合而得。此外,从测量的头-尾模式结构中提取色度。测量的结果提供了实验证据的重要性,空间电荷效应和头-尾模式的横向光束信号在高强度的解释。

英文摘要:

Two different tune measurement systems have been installed in the GSI heavy-ion synchrotron SIS-18. Tune spectra are obtained with high accuracy using these fast and sensitive systems. Besides the machine tune, the spectra contain information about the intensity dependent coherent tune shift and the incoherent space charge tune shift. The space charge tune shift is derived from a fit of the observed shifted positions of the synchrotron satellites to an analytic expression for the head-tail eigenmodes with space charge. Furthermore, the chromaticity is extracted from the measured head-tail mode structure. The results of the measurements provide experimental evidence of the importance of space charge effects and head-tail modes for the interpretation of transverse beam signals at high intensity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑