An intense R&D program
has been carried out by the NOE Collaboration to develop a massive fine
grain scintillating fiber calorimeter, to be used, in combination with
an appropriate target, in a Long Baseline CERN-Gran Sasso (CNGS) neutrino
beam experiment. The performance of a 4 tons NOE calorimeter prototype
exposed to a test beam at CERN PS are shown in the following pages