/ Instrumentation nucl-ex/0412021

Application of PbWO(4) crystal scintillators in experiment to search for 2 beta decay of Cd-116

Danevich, F.A. (Kiev, INR) ; Georgadze, A.Sh. (Kiev, INR) ; Kobychev, V.V. (Kiev, INR) ; Kropivyansky, B.N. (Kiev, INR) ; Nagorny, S.S. (Kiev, INR) ; Nikolaiko, A.S. (Kiev, INR) ; Poda, D.V. (Kiev, INR) ; Tretyak, V.I. (Kiev, INR) ; Yurchenko, S.S. (Kiev, INR) ; Grinyov, B.V. (Inst. Scintill. Mat., Kharkiv) ; Nagornaya, L.L. (Inst. Scintill. Mat., Kharkiv) ; Pirogov, E.N. (Inst. Scintill. Mat., Kharkiv) ; Ryzhikov, V.D. (Inst. Scintill. Mat., Kharkiv) ; Brudanin, V.B. (Dubna, JINR) ; Fedorov, M. (Minsk, Inst. Nucl. Problems) ; Korzhik, M. (Minsk, Inst. Nucl. Problems) ; Lobko, A. (Minsk, Inst. Nucl. Problems) ; Miussevitch, O. (Minsk, Inst. Nucl. Problems) ; Solsky, I.M. (Inst. Materials, Lviv)

Published in: Nucl.Instrum.Meth.
Year: 2006
Vol.: A556
Page No: 259-265
Pages: 17

Abstract: PbWO4 crystal scintillators are discussed as an active shield and light-guides in 116Cd double beta decay experiment with CdWO4 scintillators. Scintillation properties and radioactive contamination of PbWO4 scintillators were investigated. Energy resolution of CdWO4 detector, coupled to PbWO4 crystal as a light-guide, was tested. Efficiency of PbWO4-based active shield to suppress background from the internal contamination of PbWO4 crystals was calculated. Using of lead tungstate crystal scintillators as high efficiency 4-pi active shield could allow to build sensitive double beta experiment with 116CdWO4 crystal scintillators.

Keyword(s): Scintillation detector ; PbWO(4) and CdWO(4) crystals ; Double-beta decay ; Low counting experiments

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