The Transition Radiation Tracker (TRT) is the outermost of the three tracking subsystems of the ATLAS Inner Detector at the Large Hadron Collider. It is a straw-tube based gas detector providing continuous tracking as well as particle identification capability. The TRT has been successfully commissioned with data collected from millions of cosmic ray muons. In this talk, we present a study of the in situ performance of the detector, with particular emphasis on the measurement of the robustness of track reconstruction.
The Transition Radiation Tracker (TRT) is the outermost of the 3 tracking subsystems of the ATLAS Inner Detector at the Large Hadron Collider. It is a straw based gas detector providing continuous tracking as well particle identification capability. It also provides information about the amount of ionization produced by charged particles crossing the straws. In this talk we present a study of the detector response to heavy ionizing particles that could either be heavy or doubly charged as predicted by some new physics models. We discuss studies aimed at the discrimination of these particles in the TRT to normal ionizing particles.