Modular X and gamma rays sensor, a space-based instrument for transient lighting events in high atmosphere

Doing application of the techniques developed on High Energy Gamma rays detection for LEGRI mission of MINISAT satellite, and the experience acquired with INTEGRAL payloads. The scientific and technician team of INTA-GACE is involved into a international consortium, on developing an instrument to detect High Energy Events of very short time duration, similar to Gamma ray burst. Transient Lighting Events (TLE´s), which are present on Terrestrial high atmosphere, and being object of research recently. A space base instrument, to be located on International Space Station (COLUMBUS module), will be enjoy of a superbly location to monitor the earth atmosphere in order to detect those rare events. At same time new detectors and technical challenges are front the team. This article exposes the actual design status and solutions in the MXGS instrument, to give support to gamma sensors.