Köln 2025 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 21: Instrumentation VI

HK 21.1: Gruppenbericht

Dienstag, 11. März 2025, 15:45–16:15, SR Exp1B Chemie

Recent results from the mCBM experiment at SIS18 of GSI/FAIR — •Christian Sturm for the CBM collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany

The mCBM experiment, a CBM demonstrator and full-system test-setup, was constructed 2017/18 at the SIS18 facility of GSI / FAIR, taking data within the FAIR Phase-0 program since 2019. The main focus lays on testing and optimizing the complete CBM data chain incl. the online track and event reconstruction as well as event selection algorithms in nucleus-nucleus reactions with collision rates up to 10 MHz (averaged). mCBM comprises pre-series and series productions of all CBM detector systems and their read-out chains. To further validate CBM’s read-out and data processing concept, the production yield of rare Λ baryons is studied in nucleus-nucleus collisions serving as a benchmark observable, which will allow comparison with published data. Hence, latest results on performance studies of the CBM detector systems, the CBM online system prototype and on rare Λ reconstruction with the mCBM experiment will be presented.

Keywords: GSI/FAIR; CBM; nucleus-nucleus collisions; free-streaming DAQ/data transport; reconstruction of Lambda baryons