TY  - JOUR
AU  - Luo, X. L. et al
AU  - Agramunt, J.
AU  - Egea, F. J.
AU  - Gadea, A.
AU  - Huyuk, T.
PY  - 2014
DA  - 2014//
TI  - Test of digital neutron-gamma discrimination with four different photomultiplier tubes for the NEutron Detector Array (NEDA)
T2  - Nucl. Instrum. Methods Phys. Res. A
JO  - Nuclear Instruments & Methods in Physics Research A
SP  - 83
EP  - 91
VL  - 767
PB  - Elsevier Science Bv
KW  - Digital neutron-gamma discrimination
KW  - Liquid scintillator
KW  - Photomultiplier tube
KW  - Charge Comparison
KW  - Integrated rise-time
KW  - Time-of-flight
KW  - NEDA
AB  - 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.
SN  - 0168-9002
UR  - https://doi.org/10.1016/j.nima.2014.08.023
DO  - 10.1016/j.nima.2014.08.023
LA  - English
N1  - WOS:000344994600012
ID  - Luo_etal2014
ER  -