Spatial resolution of an organic scintillator-based Neutron–Gamma Emission Tomography system with different detector cell sizes

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2025-06-30 DOI:10.1016/j.nima.2025.170788

Rafael Escudeiro , Ihor Tavrovskyi , Vivian Peters , Jana Vasiljević , Anders Puranen , Bo Cederwall

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Abstract

The detection and localization of special nuclear materials and other actinides are important in various applications, including nuclear security and radioactive waste management. This system detects the neutrons and gamma rays emitted by actinide materials to localize the sources within a sample. The system’s detectors are constructed from organic scintillator cells, enabling rapid detection. When combined with Neutron–Gamma Emission Tomography (NGET), the system allows for precise localization of neutron-emitting sources. This study investigates the attainable spatial resolution of the technique in relation to the dimensions of the individual detector cells, with both experimental measurements and simulations, aiming to optimize detector geometries for various applications and requirements.

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不同探测器单元尺寸的基于有机闪烁体的中子-伽马发射层析成像系统的空间分辨率

特殊核材料和其他锕系元素的检测和定位在包括核安全和放射性废物管理在内的各种应用中都很重要。该系统检测锕系物质发出的中子和伽马射线，以定位样品内的源。该系统的探测器由有机闪烁体细胞构成，可实现快速检测。当与中子伽马发射断层扫描（NGET）相结合时，该系统可以精确定位中子发射源。本研究通过实验测量和模拟，探讨了该技术可实现的空间分辨率与单个探测器单元尺寸的关系，旨在优化各种应用和要求的探测器几何形状。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.