Spectrum of multi-bunch beam position model and parameter acquisition algorithm
-
摘要: 以储存环逐圈位置频谱模型为基础，通过一些假设条件推导出多束团模式下束流位置的频谱模型。利用上海光源储存环受激多束团位置信号频谱数据，使用遗传算法进行多曲线数据拟合得到模型参数。结果表明：在迭代100次的条件下，该模型与原数据所有曲线的相关性均在95%以上，并且可以精确估计多束团频谱曲线的双峰分裂。曲线拟合后的参数可以监测储存环阻抗的变化。Abstract: Based on the spectrum of turn-by-turn model for the storage ring, spectrum of multi-bunch beam position model was derived through some assumptions. Spectrum of excited electron beam position was analyzed at Shanghai Synchrotron Radiation Facility(SSRF) and Genetic Algorithm was used to fit multi-curve data and the model parameters were obtained. The results show that, after 100 times iteration, all the correlation of fitted data and original data can be up to 95%, and the model can accurately estimate a bimodal split of the spectrum curve. The parameters can be used for monitoring the impedance of the storage ring.
-
Key words:
- multi-bunch /
- spectrum model /
- genetic algorithm /
- multiple curve fitting /
- impedance
-
点击查看大图
计量
- 文章访问数: 1280
- HTML全文浏览量: 268
- PDF下载量: 416
- 被引次数: 0
下载:
