Progress in development of a 6LiF/ZnS-based neutron multiplicity counter

Sean Stave, Bruce Bernacki, Mary Bliss, Christian Cowles, Richard Kouzes, Azaree Lintereur, Sean Robinson, Edward Siciliano, Patrick Valdez, Lynn Wood

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

    Abstract

    Neutron multiplicity counters are used in safeguards to provide rapid assay of samples which contain an unknown amount of plutonium in a potentially unknown configuration. Alternatives to the use of 3He for the detection of thermal neutrons are being investigated. With appropriate detector design, the neutron single, double, and triple coincidence events can be used to extract information of three unknown parameters such as the 240Pu-effective mass, the sample self-multiplication, and the (α,n) rate. A project at PNNL has investigated replacing 3He-based tubes with LiF/ZnS neutron-scintillator sheets and wavelength shifting plastic for light pipes. A demonstrator system was constructed and is being used to test potential data acquisition system options and neutron/gamma-ray discrimination algorithms for a larger-scale system. A full-scale system has been extensively modeled to better understand the impact of all the various components. The results of the current testing and modeling effort will inform the final design of a full scale system which is expected to match the performance of existing 3He-based neutron multiplicity counters. A review of the current effort and the most recent findings will be presented.

    Original languageEnglish (US)
    Title of host publication2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781479960972
    DOIs
    StatePublished - Mar 10 2016
    EventIEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014 - Seattle, United States
    Duration: Nov 8 2014Nov 15 2014

    Publication series

    Name2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014

    Other

    OtherIEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
    CountryUnited States
    CitySeattle
    Period11/8/1411/15/14

    Fingerprint

    neutron counters
    Neutrons
    neutrons
    plutonium
    thermal neutrons
    multiplication
    scintillation counters
    data acquisition
    discrimination
    plastics
    gamma rays
    tubes
    Plutonium
    Gamma Rays
    detectors
    configurations
    Information Systems
    wavelengths
    Plastics
    Hot Temperature

    All Science Journal Classification (ASJC) codes

    • Nuclear and High Energy Physics
    • Radiology Nuclear Medicine and imaging

    Cite this

    Stave, S., Bernacki, B., Bliss, M., Cowles, C., Kouzes, R., Lintereur, A., ... Wood, L. (2016). Progress in development of a 6LiF/ZnS-based neutron multiplicity counter. In 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014 [7431221] (2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2014.7431221
    Stave, Sean ; Bernacki, Bruce ; Bliss, Mary ; Cowles, Christian ; Kouzes, Richard ; Lintereur, Azaree ; Robinson, Sean ; Siciliano, Edward ; Valdez, Patrick ; Wood, Lynn. / Progress in development of a 6LiF/ZnS-based neutron multiplicity counter. 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014. Institute of Electrical and Electronics Engineers Inc., 2016. (2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014).
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    title = "Progress in development of a 6LiF/ZnS-based neutron multiplicity counter",
    abstract = "Neutron multiplicity counters are used in safeguards to provide rapid assay of samples which contain an unknown amount of plutonium in a potentially unknown configuration. Alternatives to the use of 3He for the detection of thermal neutrons are being investigated. With appropriate detector design, the neutron single, double, and triple coincidence events can be used to extract information of three unknown parameters such as the 240Pu-effective mass, the sample self-multiplication, and the (α,n) rate. A project at PNNL has investigated replacing 3He-based tubes with LiF/ZnS neutron-scintillator sheets and wavelength shifting plastic for light pipes. A demonstrator system was constructed and is being used to test potential data acquisition system options and neutron/gamma-ray discrimination algorithms for a larger-scale system. A full-scale system has been extensively modeled to better understand the impact of all the various components. The results of the current testing and modeling effort will inform the final design of a full scale system which is expected to match the performance of existing 3He-based neutron multiplicity counters. A review of the current effort and the most recent findings will be presented.",
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    Stave, S, Bernacki, B, Bliss, M, Cowles, C, Kouzes, R, Lintereur, A, Robinson, S, Siciliano, E, Valdez, P & Wood, L 2016, Progress in development of a 6LiF/ZnS-based neutron multiplicity counter. in 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014., 7431221, 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014, Institute of Electrical and Electronics Engineers Inc., IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014, Seattle, United States, 11/8/14. https://doi.org/10.1109/NSSMIC.2014.7431221

    Progress in development of a 6LiF/ZnS-based neutron multiplicity counter. / Stave, Sean; Bernacki, Bruce; Bliss, Mary; Cowles, Christian; Kouzes, Richard; Lintereur, Azaree; Robinson, Sean; Siciliano, Edward; Valdez, Patrick; Wood, Lynn.

    2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014. Institute of Electrical and Electronics Engineers Inc., 2016. 7431221 (2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014).

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

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    AU - Lintereur, Azaree

    AU - Robinson, Sean

    AU - Siciliano, Edward

    AU - Valdez, Patrick

    AU - Wood, Lynn

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    Stave S, Bernacki B, Bliss M, Cowles C, Kouzes R, Lintereur A et al. Progress in development of a 6LiF/ZnS-based neutron multiplicity counter. In 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014. Institute of Electrical and Electronics Engineers Inc. 2016. 7431221. (2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014). https://doi.org/10.1109/NSSMIC.2014.7431221