环境温度对合肥光源束流轨道稳定性的影响

 环境温度是影响电子束流轨道稳定性的重要因素之一，国内外大多数加速器实验室为此都建立了较为完备的环境温度监测系统和恒温空调系统。合肥光源(HLS)是第二代光源，全环闭合轨道垂直方向上要求稳定在100 mm以内。为定量研究和分析环境温度对合肥光源的电子束流轨道的影响，建立了环境温度监测系统。着重介绍了环境温度监测系统的组成、辐射干扰问题以及数据分析方法。数据分析结果表明：环境温度与束流位置之间具有较强的相关性，垂直方向环境温度每变化1 ℃,束流位置变化10～20 mm。

Environment temperature influence on beam orbit at HLS storage ring

Environment temperature is an important factor affecting the stability of electron beam orbit . Most accelerator laboratories of the world have built environment temperature monitoring systems and air-condition systems. HLS is a light source of the second generation, the shift of the global beam orbit is required to stabilize within 100 mm in vertical plane. An environment temperature monitoring system was built recently for analyzing the environment temperature influence on beam orbit. The structure of the system and the problem of radiation interference are described. The data analysis indicates that beam orbit fluctuation is strongly correlated to temperature variation and the beam orbit in vertical plane varies 10~20 mm when the environment temperature changes 1 ℃.