Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
}
TY - GEN
T1 - A novel wavelet-based method for neutron/gamma discrimination in liquid scintillators
AU - Yousefi, S.
AU - Lucchese, L.
AU - Aspinall, M.D.
PY - 2008
Y1 - 2008
N2 - A novel algorithm for the digital discrimination of neutrons and gamma-rays in a mixed radiation field is presented. Most of the pulse shape discrimination methods in scintillation detection systems use time-domain features of the signal (e. g. charge comparison method or constant-time discrimination). However, there are no frequency-domain discrimination methods up to date in the literature. Our method employs the wavelet transform to extract frequency-domain features for discrimination. Compared to the pulse gradient analysis (PGA) algorithm, it provides an improvement in reducing the overlap area between neutron and gamma events and also in increasing the Figure of Merit (FoM). Another advantage of this method consists in the removal of the dependency of the discrimination method on timing features. Since the light output in the scintillation process is very noisy, this kind of dependency may degrade the performance of the algorithm.
AB - A novel algorithm for the digital discrimination of neutrons and gamma-rays in a mixed radiation field is presented. Most of the pulse shape discrimination methods in scintillation detection systems use time-domain features of the signal (e. g. charge comparison method or constant-time discrimination). However, there are no frequency-domain discrimination methods up to date in the literature. Our method employs the wavelet transform to extract frequency-domain features for discrimination. Compared to the pulse gradient analysis (PGA) algorithm, it provides an improvement in reducing the overlap area between neutron and gamma events and also in increasing the Figure of Merit (FoM). Another advantage of this method consists in the removal of the dependency of the discrimination method on timing features. Since the light output in the scintillation process is very noisy, this kind of dependency may degrade the performance of the algorithm.
KW - Neutrons
KW - Frequency domain analysis
KW - Pulse shaping methods
KW - Shape
KW - Solid scintillation detectors
KW - Time domain analysis
KW - Wavelet transforms
KW - Feature extraction
KW - Algorithm design and analysis
KW - Electronics packaging
U2 - 10.1109/NSSMIC.2008.4774836
DO - 10.1109/NSSMIC.2008.4774836
M3 - Conference contribution/Paper
SN - 9781424427147
SP - 2387
EP - 2391
BT - IEEE Nuclear Science Symposium Conference Record
PB - IEEE
ER -