  While designed primarily for X-ray imaging applications, the Medipix3 ASIC
can also be used for charged-particle tracking. In this work, results from a
beam test at the CERN SPS with irradiated and non-irradiated sensors are
presented and shown to be in agreement with simulation, demonstrating the
suitability of the Medipix3 ASIC as a tool for characterising pixel sensors.
