Properties And Radiation Hardness Of PbWO/sub 4/ Crystals

Melt. Hardn. Xo. RM. Hygrosc. pointOC ( M ~ ~ ~ ) cm cm Amongst new heavy scintillating crystals which satisfy the requirements of electromagnetic calorimetry in the extreme conditions of rate and radiation foreseen in the future projects as LHC, SSC, UNK single crystals based on lead and tungsten compounds have been already considered as a possible choice [l]. Recently it has been shown that PbWO4 single crystals [2-61 possess such properties. The perspective of wide application of PbWO4 scintillator for detectors has stimulated further investigations of these crystals to control the factors which determine its scintillation properties. Beam test have been performed at MEP (Protvino) and at CERN.