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HK: Fachverband Physik der Hadronen und Kerne

HK 18: Instrumentation V

HK 18.2: Vortrag

Dienstag, 12. März 2024, 16:00–16:15, HBR 19: C 5a

Optimizations of the specific energy loss measurement and data to Monte Carlo matching for the ALICE TPC in Run 3 — •Tuba Gündem — Institut für Kernphysik, Goethe-Universität Frankfurt

The Time Projection Chamber (TPC) is the primary detector for tracking and Particle Identification (PID) in the ALICE experiment. PID is achieved through the reconstruction of particle momentum and specific energy loss (dE/dx). The dE/dx for a given track is calculated using the clusters associated with the track. However, challenges arise in the form of potential loss of TPC clusters, caused by different factors such as falling below the zero suppression threshold applied in the front-end electronics.

In this talk, various strategies for dealing with subthreshold clusters and cluster acceptance effects, offering new possibilities for optimizing the dE/dx calculation will be presented. Furthermore, the impact of space-charge distortion on dE/dx will be discussed. In addition, a method for improving the matching of simulated dE/dx with reconstructed dE/dx in data will be shown.

Keywords: ALICE; TPC; dEdx; calibration