%0 Journal Article
%T Test of digital neutron-gamma discrimination with four different photomultiplier tubes for the NEutron Detector Array (NEDA)
%A Luo, X. L. et al
%A Agramunt, J.
%A Egea, F. J.
%A Gadea, A.
%A Huyuk, T.
%J Nuclear Instruments & Methods in Physics Research A
%D 2014
%V 767
%I Elsevier Science Bv
%@ 0168-9002
%G English
%F Luo_etal2014
%O WOS:000344994600012
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2011), last updated on Thu, 18 Dec 2014 23:39:26 +0000
%X A comparative study of the neutron-gamma discrimination performance of a liquid scintillator detector BC501A coupled to four different 5 in photomultiplier tubes (ET9390kb, R11833-100, XP4512 and R4144) was carried out Both the Charge Comparison method and the Integrated Rise-Time method were implemented digitally to discriminate between neutrons and gamma rays emitted by a Cf-252 source. In both methods, the neutron-gamma discrimination capabilities of the four photomultiplier tubes were quantitatively compared by evaluating their figure-of-merit values at different energy regions between 50 keVee and 1000 keVee. Additionally, the results were further verified qualitatively using time-of-flight to distinguish gamma rays and neutrons. The results consistently show that photomultiplier tubes R11833-100 and ET9390kb generally perform best regarding neutron-gamma discrimination with only slight differences in figure-of-merit values. This superiority can be explained by their relatively higher photoelectron yield, which indicates that a scintillator detector coupled to a photomultiplier tube with higher photoelectron yield tends to result in better neutron-gamma discrimination performance. The results of this work will provide reference for the choice of photomultiplier tubes for future neutron detector arrays like NEDA.
%K Digital neutron-gamma discrimination
%K Liquid scintillator
%K Photomultiplier tube
%K Charge Comparison
%K Integrated rise-time
%K Time-of-flight
%K NEDA
%R 10.1016/j.nima.2014.08.023
%U https://doi.org/10.1016/j.nima.2014.08.023
%P 83-91