8th International Conference on Nuclear Physics at Storage Rings-Stori11, October 9-14, 2011
Laboratori Nazionale di Frascati, Italy. 

Storage rings offer the possibility of measuring proton- and alpha-induced reactions in inverse
kinematics. The combination of this approachwith a radioactive beamfacility allows, in principle,
the determination of the respective cross sections for radioactive isotopes. Such data are highly
desired for a better understanding of astrophysical nucleosynthesis processes like the p-process.
A pioneering experiment has been performed at the Experimental Storage Ring (ESR) at GSI
using a stable 96Ru beam at 9-11 AMeV and a hydrogen target. Monte-Carlo simulations of
the experiment were made using the Geant4 code. In these simulations, the experimental setup is
described in detail and all reaction channels can be investigated. Based on the Geant4 simulations,
a prediction of the shape of different spectral components can be performed. A comparison
of simulated predictions with the experimental results shows a good agreement and allows the
extraction of the cross section.