首页> 外文期刊>Nuclear Instruments & Methods in Physics Research >Test of digital neutron-gamma discrimination with four different photomultiplier tubes for the NEutron Detector Array (NEDA)
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Test of digital neutron-gamma discrimination with four different photomultiplier tubes for the NEutron Detector Array (NEDA)

机译:使用四个不同的光电倍增管对NEutron探测器阵列(NEDA)进行数字中子-γ鉴别测试

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摘要

A comparative study of the neutron-γ discrimination performance of a liquid scintillator detector BC501A coupled to four different 5 in. photomultiplier tubes (ET9390kb, R11833-100, XP4512 and R4144) was carried out. Both the Charge Comparison method and the Integrated Rise-Time method were implemented digitally to discriminate between neutrons and γ rays emitted by a ~(252)Cf source. In both methods, the neutron-γ discrimination capabilities of the four photomultiplier tubes were quantitatively compared by evaluating their figure-of-merit values at different energy regions between 50 keVee and 1000 keVee. Additionally, the results were further verified qualitatively using time-of-flight to distinguish γ rays and neutrons. The results consistently show that photomultiplier tubes R11833-100 and ET9390kb generally perform best regarding neutron-γ discrimination with only slight differences in figure-of-merit values. This superiority can be explained by their relatively higher photoelectron yield, which indicates that a scintillator detector coupled to a photomultiplier tube with higher photoelectron yield tends to result in better neutron-γ discrimination performance. The results of this work will provide reference for the choice of photomultiplier tubes for future neutron detector arrays like NEDA.
机译:对与四个不同的5英寸光电倍增管(ET9390kb,R11833-100,XP4512和R4144)耦合的液体闪烁探测器BC501A的中子γ分辨性能进行了比较研究。电荷比较方法和积分上升时间方法均以数字方式实现,以区分〜(252)Cf源发出的中子和γ射线。在这两种方法中,通过评估在50 keVee和1000 keVee之间的不同能量区域的品质因数值,定量比较了四个光电倍增管的中子-γ分辨能力。此外,使用飞行时间区分γ射线和中子进一步定性验证了结果。结果一致表明,就中子-γ辨别而言,光电倍增管R11833-100和ET9390kb通常表现最好,而品质因数值仅有微小差异。这种优越性可以通过其相对较高的光电子产率来解释,这表明与具有较高光电子产率的光电倍增管耦合的闪烁体检测器往往会导致更好的中子-γ分辨性能。这项工作的结果将为选择像NEDA这样的未来中子探测器阵列的光电倍增管提供参考。

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    Department of Instrument Science and Technology, College of Mechatronics and Automation, National University of Defense Technology, Changsha, China,Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden;

    INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Padova, Italy;

    Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden;

    INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Padova, Italy;

    Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden;

    INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Padova, Italy;

    IFIC-CSIC, University of Valencia, Valencia, Spain;

    IFIC-CSIC, University of Valencia, Valencia, Spain,Department of Electronic Engineering, University of Valencia, E-46071 Valencia, Spain;

    Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, Istanbul, Turkey;

    Nigde Universitesi, Fen-Edebiyat Falkueltesi, Fizik Boeluemue, Nigde, Turkey;

    GANIL,CEA/DSAM and CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 05, France;

    IFIC-CSIC, University of Valencia, Valencia, Spain;

    Department of Electronic Engineering, University of Valencia, E-46071 Valencia, Spain;

    IFIC-CSIC, University of Valencia, Valencia, Spain;

    Faculty of Physics, Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warszawa, Poland,Heavy Ion Laboratory, University of Warsaw, ul. Pasteura 5A, 02-093 Warszawa, Poland;

    Heavy Ion Laboratory, University of Warsaw, ul. Pasteura 5A, 02-093 Warszawa, Poland,National Centre for Nuclear Research, A. Soltana 7, PL 05-400 Otwock-Swierk, Poland;

    Johannes Gutenberg-Universitaet Mainz, 55099 Mainz, Germany;

    Heavy Ion Laboratory, University of Warsaw, ul. Pasteura 5A, 02-093 Warszawa, Poland;

    RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan;

    Department of Electronic Engineering, University of Valencia, E-46071 Valencia, Spain;

    INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Padova, Italy;

    Department of Physics, University of York, Heslington, York YO10 5DD, UK;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Digital neutron-gamma discrimination; Liquid scintillator; Photomultiplier tube; Charge Comparison; Integrated rise-time; Time-of-flight; NEDA;

    机译:数字中子伽玛辨别;液体闪烁体光电倍增管;收费比较;综合上升时间;飞行时间;尼达;

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