A robust optimisation procedure for pulse shape discrimination algorithms suitable for hand-held nuclear security tools.
Malinverno L., Caccia M., Santoro R., Marsden E., Bell A.
Nuclear security applications have strict requirements for hand-held instrumentations. The neutron sensitive scintillators have to be coupled to compact light sensors with low power consumption capable to be battery operated. The scintillating materials currently available are sensitive to both neutron and $\gamma$ radiation while they present different scintillating decay time with the nature of the detected particle. A robust procedure for the optimisation and comparison of different algorithms for neutron-$\gamma$ separation that are based on the signal pulse shape characteristic will be discussed. The procedure was tested with a Silicon Photomultipliers system coupled up to CLYC and EJ299-34 scintillators.