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IEEE transactions on nuclear science. 2020 Jan;67(1):10.1109/TNS.2019.2953875. doi: 10.1109/TNS.2019.2953875 Q31.92024

6LiF:ZnS(Ag) Neutron Detector Performance Optimized Using Waveform Recordings and ROC Curves

基于波形记录和ROC曲线的6LiF:ZnS(Ag)中子探测器性能优化 翻译改进

K Pritchard  1, A Osovizky  2, J Ziegler  1, E Binkley  1, P Tsai  1, N Hadad  1, M Jackson  3, C Hurlbut  3, G M Baltic  1, C F Majkrzak  1, N C Maliszewskyj  1

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作者单位

  • 1 National Institute of Standards and Technology, Gaithersburg, MD 20899 USA.
  • 2 Materials Science and Engineering Department, University of Maryland, College Park, MD 20742 USA, on leave from Rotem Industries, Beer Sheva 84190, Israel, and Nuclear Research Center Negev, Beer-Sheva 84190, Israel.
  • 3 Eljen Technology, Sweetwater, TX 79556 USA.
  • DOI: 10.1109/TNS.2019.2953875 PMID: 34140746

    摘要 Ai翻译

    We used Gaussian separation and receiver operating characteristic (ROC) curves to optimize the neutron sensitivity and gamma rejection of an ultra-thin 6LiF:ZnS(Ag)-scintillator-based neutron detector paired with a silicon photomultiplier (SiPM). We recorded the waveforms while operating the detector in a monochromatic cold neutron beam and in the presence of isotopic 137Cs and 60Co gamma sources. We used a two-window charge comparison (CC) pulse-shape discrimination (PSD) technique to distinguish the neutron capture events from other types of signals. By feeding the recorded waveforms through variants of this algorithm, it was possible to optimize the duration of the integration windows [(0-100 ns) for the prompt window and (100-2300 ns)] for the delayed window. We then computed the detector's ROC curve from waveform recordings and compared that with the experimental performance. We also used this procedure to compare a series of detector configurations to select the optimal bias voltage for the SiPM photosensor.

    Keywords: Chromatic analysis neutron diffractometer or reflectometer (CANDOR); LiF:ZnS(Ag); charge comparison (CC); neutron detector; pattern recognition; pulse shape; radiation detector; receiver operating characteristic (ROC) curve; silicon photomultiplier (SiPM); support vector machine (SVM).

    Keywords:neutron detector; waveform recordings; roc curves

    Copyright © IEEE transactions on nuclear science. 中文内容为AI机器翻译,仅供参考!

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    期刊名:Ieee transactions on nuclear science

    缩写:IEEE T NUCL SCI

    ISSN:0018-9499

    e-ISSN:1558-1578

    IF/分区:1.9/Q3

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    6LiF:ZnS(Ag) Neutron Detector Performance Optimized Using Waveform Recordings and ROC Curves