Calibration and modeling of X-ray CCD

An X-ray charge coupled device(CCD) was calibrated on the beamline 4B7B at Beijing Synchrotron Radiation Facility after the optimization of suppressing methods for high-order harmonics. In the process of data analysis, equivalent exposure time was introduced to correct the exposure time. Then the sensitivities of the CCD in the energy range between 100 and 1 500 eV were obtained. The calibration experiment fills the data gap of the sensitivity of the CCD in the energy range between 300 and 600 eV and validates the modeling in this energy range.