Application of the backward extrapolation method to pulsed neutron sources

Talamo, Alberto; Gohar, Yousry

doi:10.1016/j.nima.2017.09.029

Title: Application of the backward extrapolation method to pulsed neutron sources

Journal Article · Sat Sep 23 00:00:00 EDT 2017 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2017.09.029· OSTI ID:1402078

Talamo, Alberto ^[1]; Gohar, Yousry ^[1]

Argonne National Lab. (ANL), Argonne, IL (United States). Nuclear Engineering Division

We report particle detectors operated in pulse mode are subjected to the dead-time effect. When the average of the detector counts is constant over time, correcting for the dead-time effect is simple and can be accomplished by analytical formulas. However, when the average of the detector counts changes over time it is more difficult to take into account the dead-time effect. When a subcritical nuclear assembly is driven by a pulsed neutron source, simple analytical formulas cannot be applied to the measured detector counts to correct for the dead-time effect because of the sharp change of the detector counts over time. This work addresses this issue by using the backward extrapolation method. The latter can be applied not only to a continuous (e.g. californium) external neutron source but also to a pulsed external neutron source (e.g. by a particle accelerator) driving a subcritical nuclear assembly. Finally, the backward extrapolation method allows to obtain from the measured detector counts both the dead-time value and the real detector counts.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE), International Nuclear Energy Policy and Cooperation; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1402078

Alternate ID(s):: OSTI ID: 1549320

Journal Information:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 877; ISSN 0168-9002

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 3 works

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References (11)

Dead time corrections using the backward extrapolation method Gilad, E.; Dubi, C.; Geslot, B. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 854 https://doi.org/10.1016/j.nima.2017.02.026	journal	May 2017
Measurement of dead time by time interval distribution method Arkani, Mohammad; Raisali, Gholamreza Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 774 https://doi.org/10.1016/j.nima.2014.11.069	journal	February 2015
Dead-time effects of neutron detectors due to pulsed radiation Ott, K.; Helmecke, M.; Luszik-Bhadra, M. Radiation Protection Dosimetry, Vol. 155, Issue 2 https://doi.org/10.1093/rpd/ncs326	journal	December 2012
Correction factor for the experimental prompt neutron decay constant Talamo, Alberto; Gohar, Y.; Sadovich, S. Annals of Nuclear Energy, Vol. 62 https://doi.org/10.1016/j.anucene.2013.06.035	journal	December 2013
Monte Carlo and Deterministic Neutronics Analyses of YALINA Thermal Facility and Comparison with Experimental Results Talamo, Alberto; Gohar, Yousry; Kiyavitskaya, H. Nuclear Technology, Vol. 184, Issue 2 https://doi.org/10.13182/NT13-A22310	journal	November 2013
Advances in the computation of the Sjöstrand, Rossi, and Feynman distributions Talamo, A.; Gohar, Y.; Gabrielli, F. Progress in Nuclear Energy, Vol. 101 https://doi.org/10.1016/j.pnucene.2017.01.006	journal	November 2017
Auto-correlation and variance-to-mean measurements in a subcritical core obeying multiple alpha-modes Berglöf, Carl; Fernández-Ordóñez, Manuel; Villamarín, David Annals of Nuclear Energy, Vol. 38, Issue 2-3 https://doi.org/10.1016/j.anucene.2010.11.009	journal	February 2011
Pulse superimposition calculational methodology for estimating the subcriticality level of nuclear fuel assemblies Talamo, Alberto; Gohar, Y.; Rabiti, C. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 606, Issue 3 https://doi.org/10.1016/j.nima.2009.04.029	journal	July 2009
Monte Carlo and deterministic calculation of the Bell and Glasstone spatial correction factor Talamo, Alberto; Zhong, Zhaopeng; Gohar, Yousry Computer Physics Communications, Vol. 183, Issue 9 https://doi.org/10.1016/j.cpc.2012.04.009	journal	September 2012
Impact of the neutron detector choice on Bell and Glasstone spatial correction factor for subcriticality measurement Talamo, Alberto; Gohar, Y.; Cao, Y. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 668 https://doi.org/10.1016/j.nima.2011.11.072	journal	March 2012
Inferring the reactivity in accelerator driven systems: Corrective spatial factors for Source-Jerk and area methods Gabrielli, F.; Carta, M.; D'Angelo, A. Progress in Nuclear Energy, Vol. 50, Issue 2-6 https://doi.org/10.1016/j.pnucene.2007.11.019	journal	March 2008

Cited By (1)

Paralyzable and non-paralyzable dead-time corrections for the neutron detectors of the KUCA facility driven by external neutron sources Talamo, Alberto; Gohar, Yousry; Yamanaka, Masao Journal of Nuclear Science and Technology, Vol. 57, Issue 2 https://doi.org/10.1080/00223131.2019.1659875	journal	September 2019

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