  This work describes the tests of the scintillator electromagnetic calorimeter
of theWASA detector setup after transferring it from the CELSIUS storage ring
at The Svedberg Laboratory(Uppsala, Sweden) to the Cooler Synchrotron COSY at
the Institut fur Kernphysik (IKP) of Forschungszentrum Julich, Germany. The
tests were performed using gammas of 4.4MeV energy from an AmBe source. The
status of the CsI(Na) crystals was determined and the indication of gain factor
for the energy calibration was extracted.
