The ATLAS Transition Radiation Tracker

The Transition Radiation Tracker is a combined tracking and electron identification detector, which is part of the ATLAS Inner Detector at the CERN LHC. Tracking is carried out by drift tubes, while the interleaved radiators produce detectable X-rays when electrons traverse them. The status of the construction and quality control tests will be discussed. The results of beam tests performed on detector prototypes and the expected performance in ATLAS will also be reviewed.