Research on high-energy performance of GECAM satellite GRD detector

Scientific satellites can effectively detect astronomy. Accurate ground calibration experiments are required on the detector before the satellite payload is completed. Through the X-ray energy spectrum detected by the high-purity germanium detector, the energy resolution and energy response of the energy spectrum can be studied to meet the ground calibration requirements of the gravitational wave electromagnetic counterpart all-weather monitor (GECAM satellite). This paper mainly introduces the performance study of the X-ray high-energy part of the GRD detector, and conducts preliminary calibration experiments on the energy range from 80Kev to 150Kev. The test results: the high-purity enthalpy of the standard detector and the GRD detector have good energy linearity; The energy resolution of the single-energy X-ray of the GRD detector is better than 10.2%@79.9keV, which has good monochromaticity.