Cross-correlation measurements with the EJ-299-33 plastic scintillator
Abstract
New organic–plastic scintillation compositions have demonstrated pulse-shape discrimination (PSD) of neutrons and gamma rays. We present cross-correlation measurements of 252Cf and mixed uranium–plutonium oxide (MOX) with the EJ-299-33 plastic scintillator. For comparison, equivalent measurements were performed with an EJ-309 liquid scintillator. Offline, digital PSD was applied to each detector. These measurements show that EJ-299-33 sacrifices a factor of 5 in neutron–neutron efficiency relative to EJ-309, but could still utilize the difference in neutron–neutron efficiency and neutron single-to-double ratio to distinguish 252Cf from MOX. These measurements were modeled with MCNPX-PoliMi, and MPPost was used to convert the detailed collision history into simulated cross-correlation distributions. MCNPX-PoliMi predicted the measured 252Cf cross-correlation distribution for EJ-309 to within 10%. Greater photon uncertainty in the MOX sample led to larger discrepancy in the simulated MOX cross-correlation distribution. In conclusion, the modeled EJ-299-33 plastic also gives reasonable agreement with measured cross-correlation distributions, although the MCNPX-PoliMi model appears to under-predict the neutron detection efficiency.
- Authors:
-
- Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Nuclear Engineering and Radiological Sciences
- European Commission, Ispra (Italy). Joint Research Centre, Inst. for Transuranium Elements
- Publication Date:
- Research Org.:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation; National Science Foundation (NSF); US Department of Homeland Security (DHS)
- Contributing Org.:
- European Commission, Ispra (Italy). Joint Research Centre
- OSTI Identifier:
- 1487033
- Grant/Contract Number:
- NA0002534
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
- Additional Journal Information:
- Journal Volume: 784; Journal Issue: C; Journal ID: ISSN 0168-9002
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; EJ-299-33 plastic scintillator; MCNP; MCNPX-PoliMi; Cross-correlation distribution; Neutron measurements
Citation Formats
Bourne, Mark M., Whaley, Jeff, Dolan, Jennifer L., Polack, John K., Flaska, Marek, Clarke, Shaun D., Tomanin, Alice, Peerani, Paolo, and Pozzi, Sara A. Cross-correlation measurements with the EJ-299-33 plastic scintillator. United States: N. p., 2014.
Web. doi:10.1016/j.nima.2014.10.052.
Bourne, Mark M., Whaley, Jeff, Dolan, Jennifer L., Polack, John K., Flaska, Marek, Clarke, Shaun D., Tomanin, Alice, Peerani, Paolo, & Pozzi, Sara A. Cross-correlation measurements with the EJ-299-33 plastic scintillator. United States. https://doi.org/10.1016/j.nima.2014.10.052
Bourne, Mark M., Whaley, Jeff, Dolan, Jennifer L., Polack, John K., Flaska, Marek, Clarke, Shaun D., Tomanin, Alice, Peerani, Paolo, and Pozzi, Sara A. Fri .
"Cross-correlation measurements with the EJ-299-33 plastic scintillator". United States. https://doi.org/10.1016/j.nima.2014.10.052. https://www.osti.gov/servlets/purl/1487033.
@article{osti_1487033,
title = {Cross-correlation measurements with the EJ-299-33 plastic scintillator},
author = {Bourne, Mark M. and Whaley, Jeff and Dolan, Jennifer L. and Polack, John K. and Flaska, Marek and Clarke, Shaun D. and Tomanin, Alice and Peerani, Paolo and Pozzi, Sara A.},
abstractNote = {New organic–plastic scintillation compositions have demonstrated pulse-shape discrimination (PSD) of neutrons and gamma rays. We present cross-correlation measurements of 252Cf and mixed uranium–plutonium oxide (MOX) with the EJ-299-33 plastic scintillator. For comparison, equivalent measurements were performed with an EJ-309 liquid scintillator. Offline, digital PSD was applied to each detector. These measurements show that EJ-299-33 sacrifices a factor of 5 in neutron–neutron efficiency relative to EJ-309, but could still utilize the difference in neutron–neutron efficiency and neutron single-to-double ratio to distinguish 252Cf from MOX. These measurements were modeled with MCNPX-PoliMi, and MPPost was used to convert the detailed collision history into simulated cross-correlation distributions. MCNPX-PoliMi predicted the measured 252Cf cross-correlation distribution for EJ-309 to within 10%. Greater photon uncertainty in the MOX sample led to larger discrepancy in the simulated MOX cross-correlation distribution. In conclusion, the modeled EJ-299-33 plastic also gives reasonable agreement with measured cross-correlation distributions, although the MCNPX-PoliMi model appears to under-predict the neutron detection efficiency.},
doi = {10.1016/j.nima.2014.10.052},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 784,
place = {United States},
year = {Fri Oct 31 00:00:00 EDT 2014},
month = {Fri Oct 31 00:00:00 EDT 2014}
}
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Figures / Tables:
Fig. 1: The setup of the 252Cf cross-correlation measurement.
Figures / Tables found in this record: