Abstract
One of the main goals of the HADES-at-FAIR upgrade project is to achieve sustained trigger rates of 20 kHz in the Au+Au heavy-ion collision system at energies up to 8 GeV/u. In this context, a fast and reliable data acquisition of the 24 Multiwire Drift Chambers (MDCs) is developed. The general concept of the upgrade is based on the Trigger and Readout Board (TRB). This hardware has two digital interface connectors for mounting add-on boards. In the special case of MDC, the add-on board is the interface to the detector Front End Electronic (FEE).
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