A test beam setup for the characterization of the Geiger-mode avalanche photodiode technology for particle tracking

► A Setup for characterization of the GAPD technology in a test beam is presented. ► Two test beams at DESY (6 GeV) and CERN (120 GeV) are already planned at current time. ► A GAPD array has been designed and fabricated to fit the test beam requirements. ► We have prepared a test beam setup to minimize the particle multiscattering. ► The Expected results at DESY and CERN have been simulated with Geant4.