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HK: Fachverband Physik der Hadronen und Kerne
HK 47: Invited Talks
HK 47.3: Invited Talk
Friday, March 20, 2026, 10:00–10:30, MED 00.915
Towards Physics Operation of the CBM Experiment at FAIR — •Adrian Rodríguez Rodríguez for the CBM collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH
The Compressed Baryonic Matter (CBM) experiment at FAIR is designed to explore strongly interacting matter at high net-baryon densities, created in nucleus–nucleus collisions at √SNN = 2.5–4.9 GeV. Addressing this physics program requires a novel experimental approach capable of sustaining interaction rates of up to 10 MHz. CBM therefore implements a triggerless, free-streaming readout scheme, combined with a fully integrated detector, data transport, and online computing architecture. The experiment is now transitioning from prototyping to large-scale realization. A central detector subsystem is the Silicon Tracking System (STS), which provides charged-particle momentum reconstruction with a resolution better than 2%. Embedded in a 1 Tm magnetic field, the STS is a low-mass, large-acceptance, radiation-hard silicon tracker composed of 876 double-sided microstrip modules arranged in eight stations. Module production and qualification are well advanced, and integration activities have progressed to the assembly of the first functional detector sub-units. In parallel, the FAIR Phase-0 program enables performance measurements of CBM detector components and validates their operation under realistic heavy-ion conditions. This contribution reviews the CBM physics goals and experimental concept, with emphasis on the STS, summarizing the status of detector construction and recent results from integration and commissioning towards the upcoming physics phase.
Keywords: CBM experiment; heavy-ion physics; silicon microstrip sensors; tracking detectors; detector assembly and integration