The ATLAS Pixel Detector is the innermost detector of the ATLAS experiment at the Large Hadron Collider at CERN. With approximately 80 million readout channels, the ATLAS silicon pixel detector is high-acceptance, high-resolution, low-noise tracking device providing the desired refinement in charged track pattern recognition capability in order to meet the stringent track reconstruction requirements of ATLAS, largely defining its ability to effectively resolve primary and secondary vertices and perform efficinet flavor tagging essential for discovery of new physics.
Being the last sub-system installed in ATLAS by the end of June 2007, Pixel Detector was successfully connected, commissioned, and tested in situ while meeting an extremely tight operations schedule, and is ready to take data upon the projected turn-on of the LHC at the end of 2009.
UT Dallas group has successfully deployed and commissioned the environmental controls for the opto-links, crucial for stable operation of the readout electronics of the pixel detector. Since fall 2008, Pixel Detector was included in the combined ATLAS detector operation, collecting physics data with cosmic muons. Details from the Pixel Detector installation and commissioning, as well as the details on major calibration procedures and the results obtained with collected cosmic data, are presented along with the current ATLAS detector status summary.