Detection and measurement of gamma rays with the AMS-02 detector

The Alpha Magnetic Spectrometer (AMS-02) will be installed on the International Space Station (ISS). The gamma rays can be measured through gamma conversion into e+e- pair, before reaching the Silicon Tracker or by measurement of a photon hitting directly the Electromagnetic Calorimeter (ECAL). AMS-02 will provide precise gamma measurements in the GeV energy range, which is particularly relevant for Dark Matter searches. In addition, the good angular resolution and identification capabilities of the detector will allow studies of the main galactic and extra-galactic sources, diffuse gamma background and Gamma Ray Bursts.