Exploration of calibration methods of photoconductive detectors sensitivity

Photoconduction detector has advanced features of small volume, high sensitivity and wide application range, but the noise current of it is high. So it is difficult to calibrate the detector's sensitivity. We have calibrated a few of PCDs by the way of electronics on Beijing Synchronization Radiation Facility (BSRF) and obtained the sensitivity curve at 50-300eV energy range. The way we used has been proven a good way from the experimental results.