@Article{Luo_etal2018,
author="Luo, X. L. et al
and Agramunt, J.
and Egea, F. J.
and Gadea, A.
and Huyuk, T.",
title="Pulse pile-up identification and reconstruction for liquid scintillator based neutron detectors",
journal="Nuclear Instruments {\&} Methods in Physics Research A",
year="2018",
publisher="Elsevier Science Bv",
volume="897",
pages="59--65",
optkeywords="Pile-up; Digital; First-order derivative; Neutron-gamma discrimination; Liquid scintillator",
abstract="The issue of pulse pile-up is frequently encountered in nuclear experiments involving high counting rates, which will distort the pulse shapes and the energy spectra. A digital method of off-line processing of pile-up pulses is presented. The pile-up pulses were firstly identified by detecting the downward-going zero-crossings in the first-order derivative of the original signal, and then the constituent pulses were reconstructed based on comparing the pile-up pulse with four models that are generated by combining pairs of neutron and.. standard pulses together with a controllable time interval. The accuracy of this method in resolving the pile-up events was investigated as a function of the time interval between two pulses constituting a pile-up event. The obtained results show that the method is capable of disentangling two pulses with a time interval among them down to 20 ns, as well as classifying them as neutrons or gamma rays. Furthermore, the error of reconstructing pile-up pulses could be kept below 6{\%} when successive peaks were separated by more than 50 ns. By applying the method in a high counting rate of pile-up events measurement of the NEutron Detector Array (NEDA), it was empirically found that this method can reconstruct the pile-up pulses and perform neutron-gamma discrimination quite accurately. It can also significantly correct the distorted pulse height spectrum due to pile-up events.",
optnote="WOS:000433206800010",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3591), last updated on Mon, 11 Jun 2018 12:41:46 +0000",
issn="0168-9002",
doi="10.1016/j.nima.2018.03.078",
opturl="https://doi.org/10.1016/j.nima.2018.03.078",
language="English"
}