Planar pixel sensors for the ATLAS tracker upgrade at HL-LHC

The ATLAS Planar Pixel Sensor R and D Project is a collaboration of 17 institutes and more than 80 scientists. Their goal is to explore the operation of planar pixel sensors for the tracker upgrade at the High Luminosity-Large Hadron Collider (HL-LHC). This work will give a summary of the achievements on radiation studies with n-in-n and n-in-p pixel sensors, bump-bonded to ATLAS FE-I3 and FE-I4 read-out chips. The summary includes results from tests with radioactive sources and tracking efficiencies extracted from test beam measurements. Analysis results of 2×1016neqcm−2 and 1×1016neqcm−2 (1 MeV neutron equivalent) irradiated n-in-n and n-in-p modules confirm the operation of planar pixel sensors for future applications