Experiments at COSY Original Research Article

At the COSY cooler synchrotron several experimental facilities are in operation at internal and external target stations. The combination of a high quality low emittance proton beam with high acceptance detector systems allows precise and complete experiments. The momentum range of the COSY beam from 300 MeV/c up to about 3.5 GeV/c opens a large field of experimental studies. One main topic of the present experiments is strangeness production with emphasis to the threshold region.