30th International Cosmic Ray Conference The hard X ray detector and its electronics borne by SZ2 spacecraft H.Y. Wang, Y.Q. Ma, C.M. Zhang, Y.P. Xu, P.R. Shen, J.Z. Wang, X.H. Liang, M. Gao M. Zhao, Y. Li Key Laboratory of Particle Astrophysics, IHEP, Beijing 100049, PR China

Abstract SZ2/XD is a hard x-ray detector system, which was built for monitoring of the transient radiations, such as the gamma-ray burst (GRB) and solar flares. It is composed of two x-ray sub-detectors covering 10-800 keV. It had operated successfully on the Chinese spacecraft SZ2 for about 6 months .Hundreds burst- like events were observed, which include tens of GRB, near hundred of Solar Flares and area-related particle precipitation events. The design of the detector and its electronics system was suitable to size, power consumption and weight requirements respectively. This paper presents the introduction of SZ2/XD，its electronics system and some of its results .