Abstrakt
The HADES experiment at GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt (Germany) is fixed target experiment using SIS-18 accelerator to study collisions of protons, heavy-ions or secondary pions with target nuclei. HADES was designed and provides very accurate measurement of di-electrons and charged hadrons.
The pion induced reactions provide unique opportunity to study exclusive reactions with neutrons in the final state. Using the inclusive channel π(-) + p ---> π(-) + π(+) + n we can optimize the selection criteria for neutron hits in TOF/RPC.
Dedicated simulations are compared with preliminary results of real data analysis for reaction channels with two neutral particles in the final state.