RESULTS FROM PION CALIBRATION RUNS FOR H1 LIQUID ARGON CALORIMETER AND COMPARISONS WITH SIMULATIONS

We present results on calibration runs performed with pions at the CER N SPS for different modules of the H1 liquid argon calorimeter which c onsists of an electromagnetic section with lead absorbers and a hadron ic section with steel absorbers. The data cover an energy range from 3 .7 to 205 GeV. Detailed comparisons of the data and simulation with GH EISHA 8 in the framework of GEANT 3.14 are presented. The measured pio n induced shower profiles are well described by the simulation. The to tal signal of pions on an energy scale determined from electron measur ements is reproduced to better than 3% in various module configuration s. After application of weighting functions, determined from Monte Car lo data and needed to achieve compensation, the reconstructed measured energies agree with simulation to about 3%. The energies of hadronic showers are reconstructed with a resolution of about 50%/root E + 2%. This result is achieved by inclusion of signals from an iron streamer tube tail catcher behind the liquid argon stacks.