Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/59293
Type: Artigo de periódico
Title: Performances and stability of a 2.4 ton Gd organic liquid scintillator target for (nu)over-bar(e) detection
Author: Barabanov, IR
Bezrukov, LB
Cattadori, CM
Danilov, NA
di Vacri, A
Krilov, YS
Ioannucci, L
Yanovich, EA
Aglietta, M
Bonardi, A
Bruno, G
Fulgione, W
Kemp, E
Malguin, AS
Porta, A
Selvi, M
Abstract: In this paper we report the performance and the chemical and physical properties of a 2 x 1.2 ton organic liquid scintillator target doped with Gd up to similar to 0.1%, and the results of a 3 year long stability survey of the target. In particular we have measured and monitored the optical and fluorescent properties of the Gd-doped liquid scintillator (LS), the amount of both Gd and primary fluor in solution, and the performance of the two Gd doped targets as neutron detectors, namely neutron capture efficiency and average capture time. The experimental survey is ongoing, the targets being continuously monitored. From the spectrophotometric measurements performed on samples periodically extracted along the three years, we can exclude, at 99% C. L. level, a degradation of the light transmittance of the Gd-doped liquid scintillator larger than 1% y(-1); from the in-tank measurements no significant decrease of the neutron capture efficiency and neutron capture time is observed. This is the largest stable Gd-doped organic liquid scintillator target ever produced and continuously operated for a long period.
Subject: Gamma detectors (scintillators, CZT, HPG, HgI etc)
Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)
Liquid detectors
Neutron detectors (cold, thermal, fast neutrons)
Country: Inglaterra
Editor: Iop Publishing Ltd
Rights: fechado
Identifier DOI: 10.1088/1748-0221/5/04/P04001
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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