Title :
Optimization of a lead-tungstate crystal/photodetector system for high-energy physics
Author :
Drobyshev, G. Yu ; Fyodorov, A.A. ; Korzhik, M.V. ; Misevich, O.V. ; Katchanov, V.A. ; Peigneux, J.-P.
Author_Institution :
Inst. for Nucl. Problem, Minsk, Byelorussia
fDate :
8/1/1995 12:00:00 AM
Abstract :
The characteristics of a crystal/photodetector system with long size lead-tungstate scintillator PbWO4 (PWO) were studied. The influence of different measurement conditions on the light yield and light yield homogeneity was investigated for electromagnetic calorimeter modules with projective geometry. We have tested different kinds of reflective materials for the crystal covering such as MYLAR (mirror reflection) and MILLIPORE, TEFLON, TYVEK (diffuse reflection), using different shapes of crystals (as a parallelepiped, as a truncated pyramid, as double truncated pyramid), using light guides and/or reflecting covering at the bottom of crystal. In our investigation we have used a photomultiplier tube
Keywords :
calorimeters; photodetectors; photomultipliers; solid scintillation detectors; 135 to 220 mm; MILLIPORE; MYLAR; PbWO4; TEFLON; TYVEK; electromagnetic calorimeter; light guides; light yield; light yield homogeneity; photodetector; photomultiplier tube; projective geometry; Crystalline materials; Crystals; Electromagnetic measurements; Electromagnetic reflection; Geometry; Materials testing; Mirrors; Optical reflection; Photodetectors; Shape;
Journal_Title :
Nuclear Science, IEEE Transactions on
