Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 4: Detektorsysteme I

T 4.5: Talk

Monday, March 9, 2015, 15:05–15:20, L.09.28 (HS 12)

Expected Performance of the ATLAS Transition Radiation Tracking Detector With ArCO₂O₂ in Run-2 of the LHC — Philip Bechtle, Klaus Desch, Christian Grefe, •Oliver Ricken, and Peter Wagner — Universität Bonn

The Transition Radiation Tracker (TRT) is one of the three components of the ATLAS Inner Detector. It is a straw tube tracker designed to provide information on track reconstruction and particle identification.
In the proton-proton phase of Run-1 of the LHC, the TRT was operated with the XeCO₂O₂ gas mixture it was originally designed with. However, due to the evolution of irreparable gas leaks during operation in Run-1, the exclusive use of XeCO₂O₂ will result in costly Xenon loss. The solution aimed at is to operate the most significantly affected parts of the TRT with an ArCO₂O₂ gas mixture in Run-2.
This talk covers the process of developing the proposed mode of operation of the ATLAS TRT in Run-2 based on studies of simulations of different operation scenarios. Along with the validation of the simulations, the analysis of the performance of the TRT detector in different possible Run-2 scenarios is presented.