Johanna Fleckner (CERN / University of Mainz)
T Cornelissen on behalf of the ATLAS inner detector software group Several million cosmic tracks were recorded during the combined ATLAS runs in Autumn of 2008. Using these cosmic ray events as well as first beam events, the software infrastructure of the inner detector of the ATLAS experiment (pixels and microstrips silicon detectors as well as straw tubes withadditional transition radiation detection) is being commissioned. The full software chain has been set up in order to reconstruct and analyse this kind of events. Final detector decoders have been developed, different pattern recognition algorithms and track fitters have been validated as well as the various calibration methods. The infrastructure to deal with conditions data coming from the data acquisition, detector control system and calibration runs has been put in place, allowing also to apply alignment and calibration constants. The software has also been essential to monitor the detector performance during data taking. Detector efficiencies, noise occupancies and resolutions are being studied in detail as well as the performance of the track reconstruction itself.
|Presentation type (oral | poster)||oral|