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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Heavy Ion Collisions and QCD Phases VII

HK 46.1: Gruppenbericht

Donnerstag, 1. März 2018, 14:00–14:30, HZO 60

Status of the CBM Experiment — •Christian Sturm for the CBM collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH

The Compressed Baryonic Matter experiment (CBM) at FAIR will measure nucleus-nucleus collisions at beam energies up to 14 AGeV during the first stage and up to 45 AGeV in a second stage. The key objective of CBM is to investigate the QCD phase diagram in the region of the highest net-baryon-densities. A rich phase structure is conjectured in this region where chiral symmetry is expected to be restored and a first order phase transition could occur, representing a substantial discovery potential at FAIR energies.

As a fixed-target experiment CBM is consequently designed to cope with unprecedented interaction rates up to 10 MHz which will allow to study extremely rare probes with high precision. To achieve the high rate capability CBM will be equipped with fast and radiation hard detectors readout by a free-streaming data acquisition system transporting data with up to 1 Tb/s to a large scale computer farm providing a first level event selection. With mCBM@SIS18 (“mini-CBM”) we are presently constructing a CBM full-system test-setup at GSI/FAIR comprising final prototypes of all CBM detector subsystems. The primary aim is to study, commission and test the complex interplay of the different detector systems with the free-streaming data acquisition and the fast online event reconstruction and selection under realistic experiment conditions. A status of the CBM experiment as well as an overview on the mCBM@SIS18 project will be given.