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HK: Fachverband Hadronen und Kerne

HK 41: Accelerators and Instrumentation II

HK 41.2: Talk

Tuesday, March 17, 2009, 17:00–17:15, H-ZO 90

Alignment and tracking efficiency of the ALICE transition radiation detector — •Sebastian Huber — GSI, Planckstr.1, 64291 Darmstadt

We present a study of the tracking efficiency of the ALICE transition radiation detector (TRD) with the emphasis on its dependence on the chamber misalignment. For that purpose we analyze data simulated with the PYTHIA event generator and reconstructed with AliROOT. The efficiency is determined via the tracks reconstructed in the ALICE time projection chamber (TPC) and in the TRD. This will allow in the future to apply the same procedure to experimental data. The robust and versatile method used to determine the efficiency and the impact of misalignment on the data quality will be presented.