Speaker
Description
Compressed Baryonic Matter at FAIR: construction progress and prototype beam-test results Alberica Toia (for the CBM Collaboration) The Compressed Baryonic Matter (CBM) experiment, currently under construction at the Facility for Antiproton and Ion Research (FAIR), is designed to map the QCD phase diagram at high net-baryon densities and moderate temperatures through heavy-ion and hadron collisions in the energy range of √sₙₙ = 2.9–4.9 GeV. By recreating in the laboratory conditions similar to those found in the cores and mergers of neutron stars, CBM aims to explore the properties of strongly interacting matter and to shed light on the dynamics among its fundamental constituents. Designed to explicitly access rare observables sensitive to the medium, CBM aims to high-statistics measurements of rare probes, and therefore targets event rates of up to 10 MHz. To meet these demands, the CBM experiment uses fast and radiation hard detectors, self-triggered detector front-ends and a free-streaming readout architecture. While detector construction is progressing steadily, several subsystems -together with the readout chain and online event reconstruction- have already been commissioned and successfully operated in beam tests during the FAIR Phase-0 program and within the mini-CBM (mCBM) setup at GSI’s SIS18 accelerator. Several test beamtime campaigns have provided the first results on detector performance and system integration, demonstrating the readiness of key components for the full CBM setup. In this presentation, the CBM physics program will be outlined, the current status of the detector construction, and first experimental results from mCBM will be presented.
