论文标题
中子检测器的值分配脉冲形状歧视
Value-assigned pulse shape discrimination for neutron detectors
论文作者
论文摘要
使用来自数字电子系统的波形，已经开发了有关脉冲形状辨别（PSD）的离线分析技术，以改善条形的NE-213闪烁体中的中子 - 伽马分离，该闪光灯将其耦合到每一端的光电层管（PMT）。新的改进方法称为``值分配的PSD''（VPSD），将标准化的拟合残差分配给每个波形为PSD值。然后，此过程促进了闪烁体的纵向位置依赖性的融合，从而进一步增强了检测器系统的PSD能力。在本文中，我们使用从Ambe中子源发出的辐射来证明与使用两个PMT的光输出的几何均值相比，所得的中子伽马识别已得到很大改善。该新方法还经过修改，并应用于使用模拟电子系统的国家超导回旋实验室（NSCL）的最新实验。
Using the waveforms from a digital electronic system, an offline analysis technique on pulse shape discrimination (PSD) has been developed to improve the neutron-gamma separation in a bar-shaped NE-213 scintillator that couples to a photomultiplier tube (PMT) at each end. The new improved method, called the ``valued-assigned PSD'' (VPSD), assigns a normalized fitting residual to every waveform as the PSD value. This procedure then facilitates the incorporation of longitudinal position dependence of the scintillator, which further enhances the PSD capability of the detector system. In this paper, we use radiation emitted from an AmBe neutron source to demonstrate that the resulting neutron-gamma identification has been much improved when compared to the traditional technique that uses the geometric mean of light outputs from both PMTs. The new method has also been modified and applied to a recent experiment at the National Superconducting Cyclotron Laboratory (NSCL) that uses an analog electronic system.
