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arXiv 2107.11276physics.ins-det
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中子dEtector与Xn跟踪(NEXT)的中子探测效率

Neutron detection efficiency of the Neutron dEtector with Xn Tracking (NEXT)

S. Neupane, J. Heideman, R. Grzywacz, J. Hooker, K. L. Jones, N. Kitamura, C. R. Thornsberry, L. H. Heilbronn, M. M. Rajabali, Y. Alberty-Jones, J. Derkin, T. Massey, D. Soltesz

摘要:

为了正确表征以$β-$缓发中子辐射为主的丰中子核衰变,需要一种具有良好能量分辨率的高效中子探测系统。设计了用于测量$β$ -缓发中子发射体的Xn跟踪中子探测器(NEXT)。通过沿着中子飞行路径分割探测器,NEXT减少了中子飞行时间测量中的相关不确定性,提高了能量分辨率,同时保持了探测效率。探测器原型是由光学分离段的中子-伽马鉴别塑料闪烁体耦合到位置敏感的光电倍增管。该探测器的首次性能研究表明,在保持良好能量分辨率的同时,可以实现高的本征中子探测效率。给出了利用直接反应中子进行效率测量的结果。

英文摘要:

An efficient neutron detection system with good energy resolution is required to correctly characterize decays of neutron-rich nuclei where $β-$delayed neutron emission is a dominant decay mode. The Neutron dEtector with Xn Tracking (NEXT) has been designed to measure $β$-delayed neutron emitters. By segmenting the detector along the neutron flight path, NEXT reduces the associated uncertainties in neutron time-of-flight measurements, improving energy resolution while maintaining detection efficiency. Detector prototypes are comprised of optically separated segments of a neutron-gamma discriminating plastic scintillator coupled to position-sensitive photomultiplier tubes. The first performance studies of this detector showed that high intrinsic neutron detection efficiency could be achieved while retaining good energy resolution. The results from the efficiency measurements using neutrons from direct reactions are presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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