摘要
引入基于Hilbert变换的相空间重建手段,对合肥光源(HLS)逐束团测量系统采集的数据进行了全面的分析,其中包括单个束流位置监测器(BPM)数据的相空间重建,逐圈逐束团振荡相位信息、束团振荡模式信息、逐柬团横向工作点(tune值)变换.提出了新的分析束团tune值的手段,提供传统方法无可比拟的更高的时间和频率分辨率.还对不同模式的阻尼率进行了计算,这为衡量逐束团反馈系统的效果提供了确实可靠的方法.
In this paper, we introduce the phase space reconstruction method based on Hilbert transform to comprehensively analyse the Bunch-by-bUnch measurement record. The analyzing results include one beam position monitor (BPM) phase space reconstruction, bunch oscillation's phase information, mode diagnosing, tune evolvement regressed from phase space and the damping rate of the mode and bunch oscillation. The new method to calculate the tune evolve- ment exhibits a very high resolution both in time domain and frequency domain without any time domain average. The exponential fit to the mode and bunch oscillation damping curve are also exhibited in this paper.
出处
《高能物理与核物理》
CSCD
北大核心
2007年第3期307-310,共4页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金(10175063)
国家自然科学重点基金(10535040)资助~~
关键词
逐束团测量系统
HILBERT变换
相空间重建
bunch-by-bunch measurement system, Hilbert-transform, phase-space reconstruction