The performances of the calorimeter have been analysed
by using electrons, pions and muons
in an energy range from 1 GeV to 9.5 GeV. In order to
study the calorimeter features, dedicated data acquisition runs were performed
after removal of the TRD marble layers so that incoming particles do not
interact before reaching the calorimeter.
The following figures display typical 3 GeV electron
and pion events. At the left and right hand sides the TRD and calorimeter
modules are shown respectively. The streamer tube system is also shown.
As expected, after marble removal, both pions and electrons are recorded
in the TRD as single tracks, while different shower patterns are visible
in the calorimeter.
