Calibration and application of photon beam position monitor at HLS

This paper describes the design of a split photon beam position monitor at HLS (Hefei Light Source). Two methods of position processing are given and compared. The monitor is tested and calibrated, the results are well matched with the computed results. The photon beam position monitor has been successfully used to soft X-ray Magnetic Circular Dichroism(MCD) beam-line U18, such as the measurement of orbit stability and the slow local orbit feedback. The results of these applications are given.