The Silicon Tracker of the AMS02 experiment

After the successful test flight in 1998, the AMS experiment has been redesigned to improve its performances for future operation on the ISS. The Silicon Tracker is the central detector of the AMS-02 magnetic spectrometer. Eight planes of double-sided microstrip detectors embedded in a magnetic field of ∼0.8 T allow for an accurate 3D reconstruction of particles trajectories and their rigidity measurement up to several TVs. The tracker is made of ∼6.4 m2 of silicon with a single point resolution of 10(30) μm in the bending (not bending) coordinate. The description of the tracker system and its performance will be presented.