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HK: Fachverband Physik der Hadronen und Kerne

HK 27: Poster

HK 27.20: Poster

Dienstag, 28. März 2017, 16:45–18:45, F Foyer

Low-Momentum Corrections of the ALICE TPC dE/dx-Signal — •Matthias Kleiner for the ALICE collaboration — Institut für Kernphysik, Goethe-Universität Frankfurt

The Time Projection Chamber (TPC) is the main tracking and particle identification detector of the ALICE experiment at the CERN LHC. At momenta below 300 MeV/c the TPC dE/dx signal shows a deviation from the expected behavior as described by the Bethe-Bloch formula.
Three different correction methods for the calculation of the TPC dE/dx signal for electrons and pions are tested. The quality of the corrections is evaluated by their effects on the mean TPC dE/dx signal, the relative resolution and the separation power. Potential reasons for the deviation from the expected behavior and the corrected dE/dx signals will be presented.