Speaker
Description
The Compressed Baryonic Matter (CBM) experiment aims at exploring the QCD phase diagram at large baryon densities with heavy ion beams in the beam energy range from 2 A GeV to 11 A GeV at the SIS100 accelerator of FAIR/GSI. For charged particle identification that is required by many observables that are sensitive to the phase structure like collective flow, phase space population of rare hyperons, fluctuations of conserved quantities, … a high performance Time-of-Flight (TOF) wall with a granularity of about 100.000 channels and a system timing resolution of better than 80 ps is being built.. The system comprises Multi-gap Resistive Plate Chambers (MRPCs) in multi-strip configuration with free-streaming readout enabling the measurement of charged particles at a flux of up to 30 kHz/cm2 on the detector surface.
As part of the CBM-FAIR phase 0 program about 8% of the CBM TOF wall has been installed in the forward hemisphere (1.0 < $\eta$ < 1.5) of the STAR experiment at RHIC/BNL (called eTOF) during the beam energy scan (BES II) campaign which started in the beginning of 2019. Another 5 modules (1600 channels) are installed at miniCBM at SIS18/GSI (also part of FAIR phase 0).
The status, performance and perspectives of both TOF detector systems will be presented.
