The construction and testing of the silicon position sensitive modules for the LHCf experiment at CERN

In this paper the design criteria, construction and final performance of the silicon micro-strip modules installed in the LHCf experiment are described. LHCf is an experiment currently placed at CERN in the LHC tunnel. It consists of two small calorimeters each one placed 140 metres away from the ATLAS interaction point. Their purpose is to study very forward production of neutral particles in proton-proton collisions. The silicon modules are installed in one of the two calorimeters and provide precision information on the shower transverse profile.