maintenance of the detector system and developed in cooperation with the scientific infrastructure departments of GSI different detector systems and components of the data acquisition system. The international [...] low-mass drift chambers, a ring-imaging Cherenkov detector using a CsI photocathode and a pre-shower detector. The time-of-flight system uses diamond start detectors and scintillator and resistive plate [...] target 15 m upstream from the HADES target point. It combines a magnetic spectrometer with detector systems specialized in detecting rare decay products such as electrons and positrons from conversion decays