Operational experience with and performance of the ATLAS Pixel Detector at the Large Hadron Collider

The operational experience and requirements to ensure optimum data quality and data taking efficiency with the 4-layer ATLAS Pixel Detector are discussed. The detector has undergone significant hardware and software upgrades to meet the challenges imposed by the Large Hadron Collider (LHC). The LHC is exceeding expectations for instantaneous luminosity by more than a factor of two (to more than $2\times 10^{34}$ cm⁻² s⁻¹). Emphasizing radiation damage effects, the key status and performance metrics are described.