We report on the performances of CsI(Tl) crystals as gamma -ray detectors,
compared with standard NaI(Tl). Energy resolution from E-gamma = 122 keV up
to E-gamma = 7.6 MeV and light output yield of different CsI(Tl) crystals
and read-out configurations (photomultiplier tubes, photodiodes and avalanc
he photodiodes) have been measured. (C) 2001 Elsevier Science B.V. All righ
ts reserved.