ENERGY AND COORDINATE RESOLUTION OF A NONSEGMENTED ELECTROMAGNETIC CALORIMETER PROTOTYPE

We determined the energy and coordinate resolution of nonsegmented lay ered uranium calorimeters with scintillator cross-sections of 40 x 20 and 15 x 15 cm. The experimental data are compared with the results of a computer simulation by the GEANT3.13 program. The results are in go od agreement with analytical predictions for a calorimeter with uraniu m plate thicknesses of 0.5 and 0.2 cm. The energy resolution for elect rons with a momentum of 26.6 GeV/c amounts to 4.8 and 3.0 +/- 0.05%, r espectively; the accuracy of the input-coordinate measurement of a pri mary particle is better than 1 cm. We concluded that nonsegmented calo rimeters with large cross-sections can be used in physical experiments .