Köln 2025 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 23: Poster

HK 23.40: Poster

Dienstag, 11. März 2025, 17:30–19:00, Foyer Physik

Measurement of Energy Loss in the Silicon Tracking System of the CBM experiment and potential for PID — •David Gutierrez Menendez for the CBM collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany — Goethe University of Frankfurt, Germany

The Silicon Tracking System (STS) in the Compressed Baryonic Matter (CBM) Experiment at FAIR's SIS100 accelerator, aims to precisely track charged particles and determine their momenta. Its 876 double-sided micro*strip sensors are the means to accomplish this task in the high multiplicity environment of heavy ion collisions with high spatial, temporal and momentum resolution. A scaled down version of CBM is installed at the SIS18 accelerator and it serves as a full-system test-setup for the capabilities of the future experiment. The m(ini)CBM experiment has shown promising results in the operational and scientific realms, in beamtime campaign with heavy-ion collisions at 1-2 AGeV. At the core of mCBM resides mSTS, with 3 stations and a total of 12 sensors is able to contribute to the global track reconstruction. The goal of this work is to explore the particle identification (PID) capabilities of mSTS by measuring the collected charge from traversing ionizing particles, this task relies on a correct charge calibration and noise suppression of mSTS data. In the absence of a magnetic field, momentum measurements are not possible, but using the Time Of Flight (TOF) detector of mCBM we can extract the particle velocity and correlate it with dE/ dx data from mSTS to show the behavior of multiple particle species.