Application research of tune measurement-system in Hefei light source

The paper introduces the measurement and research of some beam parameters using tune measurement system for Hefei Light So urce (HLS), which include the betatron tune, beta function, natural chromaticity , corrected chromaticity, and central frequency. Additionally, it also describes the measurement of the influence of DC clearing electrodes on the betatron tune shift and gives, some measurement results. The measurement results are compared with the theoretical values and they are in good agreement.