  The ATLAS Planar Pixel Sensor R&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 readout chips. The summary includes results from tests with
radioactive sources and tracking efficiencies extracted from test beam
measurements. Analysis results of ${2\cdot10^{16}}
\text{n}_{\text{eq}}\text{cm}^{-2}$ and ${1\cdot10^{16}}
\text{n}_{\text{eq}}\text{cm}^{-2}$ ($1 \text{MeV}$ neutron equivalent)
irradiated n-in-n and n-in-p modules confirm the operation of planar pixel
sensors for future applications.
