Development of a trigger system with scintillating fibers and SiPM readout for the AMADEUS experiment

A prototype setup of scintillating fibers with silicon photomultipliers (SiPM) readout has been built and successfully operated. The implementation of such a setup as trigger system for the AMADEUS experiment is under study. Dedicated high voltage supply modules and pre-amplification cards have been built for the SiPM detectors and the whole setup has been tested in situ installed at the DA Φ NE accelerator as well as with a 90Sr beta source. The results of these tests are presented and complemented with Monte Carlo simulation.