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HK: Fachverband Physik der Hadronen und Kerne

HK 25: Heavy-Ion Collisions and QCD Phases VI

HK 25.1: Gruppenbericht

Dienstag, 29. März 2022, 16:00–16:30, HK-H2

The Compressed Baryonic Matter (CBM) experiment and its demonstrator mCBM at FAIR — •Adrian Amatus Weber for the CBM collaboration — Justus-Liebig Universität Gießen

The key objective of the Compressed Baryonic Matter experiment (CBM) at FAIR is to explore the QCD phase diagram at high net-baryon density and moderate temperatures in nucleus-nucleus collisions. At the FAIR energy regime, a rich phase structure could occur comprising the potential restoration of chiral symmetry and a first order phase transition, resulting in a substantial discovery potential. CBM is designed as a fixed-target experiment and will be equipped with fast and radiation-tolerant detector systems to measure with unprecedented interaction rates of up to 10MHz which will allow to study extremely rare probes with high precision. To achieve the required performance, a triggerless-streaming data acquisition and data transport system is being developed sending data with up to 1 TB/s to a large-scale computer farm for event reconstruction and first-level event selection. The presentation will summarize the preparation status of the CBM experiment including latest results of the mCBM experiment. With mCBM ("mini-CBM") a CBM precursor experiment and demonstrator has been set up within the FAIR phase-0 program, comprising pre-series and prototype modules of all CBM detector systems. During the 2021 beam campaign, high-rate tests for various detector subsystems could be performed as well as first runs with the final DAQ / data transport configuration of CBM were taken.