  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.
