The relative charge measurement precision for signal amplitudes above 1 V is below 0.5 %. The front-end achieves a time measurement precision of σₜ = 16 ps. In the context of this work the second generation of the PaDiWa-AMPS front-end board for the TRB3 (General Purpose Trigger and Readout Board - generation 3) was designed, tested in the laboratory and integrated into the HADES data acquisition infrastructure. The charge measurement of the detector signals is based on a modified time-over-threshold (TOT) measuring method. A Charge-to-Digital-Converter (QDC) and Time-to-Digital-Converter (TDC) based on a commercial FPGA (Field Programmable Gate Array) technology is used to read out 978 Photomultiplier tubes (PMT) of the ECAL. This work deals with the design, installation and commissioning of the front-end electronics for the newly installed HADES electromagnetic calorimeter (ECAL) detector at GSI Helmholtzzentrum für Schwerionenforschung GmbH in Darmstadt. Copyright Information: CC BY-NC-ND 4.0 International - Creative Commons, Attribution NonCommercial, NoDerivs.ĭesign, installation and commissioning of new read-out electronics for HADES ECAL and diamond detectors for T0-reconstruction and beam diagnostics
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