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描述了一种基于关系数据库的电子储存环束流清洗状况的分析方法,结合HLS-II(Hefei Light Source II)历史数据库讨论了储存环束流寿命、束流流强和真空压强等数据的选取条件,采用MATLAB编写了数据处理和分析程序,对HLS-II自2014年调试以来的大量历史数据进行了分析。HLS-II储存环在2014年11月因更换陶瓷真空室而暴露大气,因而束流清洗过程分为两个阶段。数据分析结果表明,第二阶段的束流清洗效果较第一阶段更加明显,且积分流强达到80 A·h后动态真空度达到了设计要求。此分析方法处理快捷,自动化程度高,可帮助研究人员快速掌握储存环的束流清洗状况。
A method based on relational database for analysis of electron storage ring beam cleaning status is described. The selection of data such as beam life, beam current and vacuum pressure is discussed in combination with HLS-II (Hefei Light Source II) Conditions, prepared by MATLAB data processing and analysis procedures, HLS-II since commissioning in 2014 a large number of historical data analysis. The HLS-II storage ring exposed to the atmosphere in November 2014 by replacing the ceramic vacuum chamber, so the beam cleaning process was divided into two phases. The data analysis results show that the second-stage beam cleaning effect is more obvious than the first stage, and the dynamic vacuum reaches the design requirement when the integral flow strength reaches 80 A · h. This method of analysis is fast and highly automated, helping researchers quickly grasp the beam cleanliness of the storage ring.