Further progress in lead tungstate crystals

Author

Fyodorov, A. ; Korzhik, M. ; Missevitch ; Pavlenko, V. ; Kachanov, V. ; Singovsky, A. ; Annenkov, A.N. ; Ligun, V.A. ; Peigneux, J.-P. ; Vialle, J.P. ; Faure, J.-L. ; Binon, F.

Author_Institution

Inst. of Nucl. Problems, Byelorussian State Univ., Minsk, Byelorussia

Volume

1

fYear

1994

fDate

30 Oct-5 Nov 1994

Firstpage

114

Abstract

Recently, lead tungstate PbWO₄, also called PWO crystals, have been considered as a promising material for precise electromagnetic calorimetry and the first tests have shown that energy resolution, with photomultiplier readout, better than 3%/√E⊕0.7 can already be achieved with a calorimeter prototype of 9 or 20 counter cells (20×20×180÷200 cm ³). Among the relevant properties of the crystal, its good radiation hardness has been specially mentioned as well as its short radiation length and its emission in the blue range of the spectrum. Further development in PWO technology to improve the transparency and uniformity of long crystals suitable for calorimetry has been undertaken. The usual growing conditions for normal PbWO₄ crystals have been tuned for a better control of stoichiometry, and investigation of pentavalent doping has been explored

Keywords

electron beam effects; gamma-ray effects; lead compounds; niobium; photoluminescence; solid scintillation detectors; tungsten compounds; PWO crystals; PbWO₄; PbWO₄:Nb; electromagnetic calorimetry; energy resolution; pentavalent doping; photomultiplier readout; radiation hardness; stoichiometry; Calorimetry; Crystalline materials; Crystals; Electromagnetic radiation; Energy resolution; Lead; Materials testing; Photomultipliers; Prototypes; Radiation detectors;

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.1994.474379

Filename

474379