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

Volume

42

Issue

4

fYear

1995

fDate

8/1/1995 12:00:00 AM

Firstpage

341

Lastpage

344

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;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.467824

Filename

467824