Optimization of the lead-tungstate crystal/photodetector system for high-energy physics

Author

Drobyshev, G. Yu ; Fyodorov, A.A. ; Krozhik, M.V. ; Miseveich, O.V. ; Katchanov, V.A. ; Peigneux, J.-P.

Author_Institution

Inst. for Nuclear Problems, Minsk, Russia

Volume

1

fYear

1994

fDate

30 Oct-5 Nov 1994

Firstpage

14

Abstract

The characteristics of the 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 the electromagnetic calorimeter modules with projective geometry. We have tested different kinds of reflective materials for 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 a double truncated pyramid), using light guides and/or reflecting covering at the bottom of the crystal. In our investigation we have used a photomultiplier tube

Keywords

gamma-ray detection; lead compounds; photomultipliers; solid scintillation detectors; MILLIPORE; MYLAR; PbWO₄; PbWO₄ photodetector system; TEFLON; TYVEK; crystal covering; diffuse reflection; double truncated pyramid; electromagnetic calorimeter modules; lead-tungstate crystal/photodetector system; light yield homogeneity; long size lead-tungstate scintillator; mirror reflection; optimization; parallelepiped; photomultiplier tube; projective geometry; reflective materials; truncated pyramid; Crystalline materials; Crystals; Electromagnetic measurements; Electromagnetic reflection; Geometry; Materials testing; Mirrors; Optical reflection; Photodetectors; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference, 1994., 1994 IEEE Conference Record

Conference_Location

Norfolk, VA

Print_ISBN

0-7803-2544-3

Type

conf

DOI

10.1109/NSSMIC.1994.474401

Filename

474401