Instrumental and astrophysical performances of SuperAGILE on-board AGILE Gamma-Ray mission

SuperAGILE is the X-ray stage of AGILE gamma-ray mission. It is devoted to monitor X-ray (10 - 40 keV) sources with a sensitivity better than 10 mCrab in one observing day and to detect X-ray transients in a field of view of 1.8 sr, well matched to that of the gamma ray tracker, with few arc-minutes position resolution. SuperAGILE is designed to exploit one additional layer of four silicon micro-strip detectors, for 1444 cm² of total geometrical area, on top of the AGILE tracker and a system of four mutually orthogonal one- dimensional coded masks to encode the X-ray sky. Low noise electronics based on ASICs technology is the front-end read out. We present here the instrumental and astrophysical performances of SuperAGILE as derived by Monte Carlo simulation and experimental tests.