Neutron-Gamma Discrimination Comparison of Three Organic Scintillators with CFD-based Pulse Shape Discrimination Method

Jianxin Zhou, Abdullah Abdulaziz, Yoann Altmann, Angela Di Fulvio

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this work, we compare the pulse shape discrimination (PSD) capabilities of three organic scintillators. Accurate PSD relies on the optimization of pulse processing parameters. For example, in charge integration based PSD, the results depend heavily on the choices of the pulse gates. The PSD method that developed here to improve the traditional charge integration method by using constant fraction discrimination (CFD) on the tail of each pulse to find the best integration settings. The advantage of this approach is that optimization is not needed to find the gate time and only the detector response to gamma rays is needed to find optimal PSD parameters. The organic scintillators compared in this paper are a) the recently-developed deuterated trans-stilbene (stilbene-d12), b) the EJ-309 liquid scintillator, and c) the small-molecule organic glass scintillator. The three detectors are used to measure a252Cf neutron source and calculated the figure-of-merit to evaluate the PSD performance. The result demonstrates that the method is robust and applies regardless of the detector type. The stilbene-d12 outperforms the other two detectors in terms of PSD ability, for a given light output range, and therefore, it is most suitable for neutron/gamma discrimination applications.

Original languageEnglish (US)
Title of host publication2022 IEEE NSS/MIC RTSD - IEEE Nuclear Science Symposium, Medical Imaging Conference and Room Temperature Semiconductor Detector Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665488723
DOIs
StatePublished - 2022
Externally publishedYes
Event2022 IEEE Nuclear Science Symposium, Medical Imaging Conference, and Room Temperature Semiconductor Detector Conference, IEEE NSS MIC RTSD 2022 - Milano, Italy
Duration: Nov 5 2022Nov 12 2022

Publication series

Name2022 IEEE NSS/MIC RTSD - IEEE Nuclear Science Symposium, Medical Imaging Conference and Room Temperature Semiconductor Detector Conference

Conference

Conference2022 IEEE Nuclear Science Symposium, Medical Imaging Conference, and Room Temperature Semiconductor Detector Conference, IEEE NSS MIC RTSD 2022
Country/TerritoryItaly
CityMilano
Period11/5/2211/12/22

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiology Nuclear Medicine and imaging
  • Instrumentation
  • Nuclear and High Energy Physics

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