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HK: Fachverband Physik der Hadronen und Kerne

HK 27: Poster Session

HK 27.29: Poster

Mittwoch, 18. März 2026, 16:15–18:30, Redoutensaal

Tracking performance studies for the ALICE 3 detector using ACTS — •Maria Gabriela Gomes and Klaus Reygers for the ALICE Germany collaboration — Heidelberg University, Heidelberg, Germany

The ALICE 3 experiment is a proposed next-generation detector for heavy-ion collisions at the LHC, with a physics programme based on observables that require charged-particle tracking with high efficiency and a wide pseudorapidity coverage. In this presentation, simulation-based studies of the tracking performance of the ALICE 3 detector using the ACTS (A Common Tracking Software) framework are presented. The tracking geometry is based on silicon pixel sensors arranged in cylindrical layers and forward disks, allowing performance studies up to *η*=4. The results focus on the reconstruction efficiency and transverse momentum resolution, with particular emphasis on the performance of the outer tracking system and its impact on the reconstruction of low-momentum particles. The results are obtained from Monte Carlo simulations of heavy-ion collision events and are compared for different reconstruction configurations. These studies illustrate the capabilities and limitations of ACTS in the ALICE 3 environment and provide essential input for the optimisation of the detector layout and reconstruction strategies.

Keywords: ALICE 3; Tracking performance; Detector simulation; ACTS