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A Forward Plug Calorimeter (FPC) for the ZEUS detector at HERA has been built as a shashlik lead-scintillator calorimeter with wave length shifter fiber readout. Before installation it was tested and calibrated using the X5 test beam facility of the SPS accelerator at CERN. Electron, muon and pion beams in the momentum range of 10-100 GeV/c were used. Results of these measurements are presented as well as a calibration monitoring system based on a 60 Co source.
Fakultät für Physik der Universität Freiburg, Freiburg, Germany8 Supported by the German Federal Ministry for Education and Science, Research and Technology (BMBF).
Univer. Autónoma Madrid, Dpto de Fı́sica Teórica, Madrid, Spain10 Supported by the Spanish Ministry of Education and Science through funds provided by CICYT.