Fast simulation of showers in the H1 calorimeter

A method for the fast simulation of particle showers in the H1 lead/scintillating-fiber calorimeter is presented. It is based on a shower library technique in which the detector response is simulated using a collection of stored showers for different particle types and topologies. The library is created using the GEANT programme. The fast simulation is compared to the data collected by the H1 experiment.