SMuK 2023 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 63: Instrumentation XVI

HK 63.2: Talk

Thursday, March 23, 2023, 16:15–16:30, SCH/A251

Performance on the STS detector in Ni+Ni collisions at 1.93 AGeV with the mCBM setup at SIS18 — •Dario Alberto Ramirez Zaldivar for the CBM collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany

The Compressed Baryonic Matter (CBM) is one of the experimental pillars at the FAIR facility. CBM focuses on the search for a signal of the phase transition between hadronic and quark-gluon matter, the QCD critical endpoint, new forms of strange-matter, in-medium modifications of hadrons, and the onset of chiral symmetry restoration. The Silicon Tracking System is the central detector for momentum measurement and charged-particle identification. It is designed to measure Au+Au collisions at interaction rates up to 10 MHz. It comprises approximately 900 double-sided silicon strip sensors arranged in 8 tracking stations, resulting in 1.8 million channels, having the most demanding requirements in terms of bandwidth and density of all CBM detectors. The mini-CBM (mCBM) project is a small-scale precursor of the full CBM detector, consisting of sub-units of all major CBM systems which aims to verify CBM’s concepts of free-streaming readout electronics, data transport, and online reconstruction. In the 2022 beam campaign at SIS18 (GSI) Ni+Ni collisions at 1.93 AGeV were measured with an average collision rate of 400 kHz. The mini-STS (mSTS) setup for the campaign consists of 2 stations with 11 sensors. The results from data taken in the 2022 beam campaign will be presented focusing on the hit reconstruction and mSTS performance studies.