论文标题
从转弯束位置数据的光谱分析中提取电子束的色彩特性
Extracting chromatic properties of electron beams from spectral analysis of turn-by-turn beam position data
论文作者
论文摘要
提出了一种估计线性色彩，RMS能量扩散和色彩ββ-β-β-β-贝塔β的方法，直接从圆形电子加速器中的转弯束位置数据直接出现。该技术基于在有限色的存在下对横向激发梁的频率分析。由于梁的信封的逐渐转向调制，Betatron边带出现在傅立叶光谱的主要频率周围。通过确定两个边带的振幅，可以估计梁的色彩特性。在本文中，给出了提出方法合理的分析推导，以及跟踪模拟的结果。为此，证明了该技术在KARA电子环上的实际应用。
A method to estimate linear chromaticity, RMS energy spread, and chromatic beta-beating, directly from turn-by-turn beam position data in a circular electron accelerator, is presented. This technique is based on frequency analysis of a transversely excited beam, in the presence of finite chromaticity. Due to the turn-by-turn chromatic modulation of the beam's envelope, betatron sidebands appear around the main frequency of the Fourier spectra. By determining the amplitude of both sidebands, chromatic properties of the beam can be estimated. In this paper, analytical derivations justifying the proposed method are given, along with results from tracking simulations. To this end, results from practical applications of this technique at the KARA electron ring are demonstrated.
