Köln 2025 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 20: Instrumentation V

HK 20.1: Vortrag

Dienstag, 11. März 2025, 15:45–16:00, SR Exp1A Chemie

Optimizations of the specific energy loss measurement and data to Monte Carlo matching for ALICE TPC — •Tuba Gündem — Institut für Kernphysik, Max-von-Laue-Str. 1, 60438 Frankfurt am Main

The Time Projection Chamber (TPC) serves as the primary detector for tracking and particle identification (PID) in the ALICE experiment. PID is accomplished by reconstructing particle momentum and measuring specific energy loss (dE/dx). The dE/dx value for a given track is derived from the clusters associated with that track. However, in RUN 3, the high interaction rate (IR) leads to significant occupancy effects, which must be corrected to ensure accurate dE/dx calculations. Additionally, factors such as electron attachment and gain variations can introduce discrepancies between the reconstructed dE/dx and the simulated dE/dx in Monte Carlo (MC).

This talk will present methods for optimizing dE/dx calculations, along with techniques for tuning the MC attachment and gain parameters to better align the simulated dE/dx with the reconstructed dE/dx.

Keywords: ALICE; TPC; dE/dx; optimization; MC