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Development of a CCD based thermal neutron imaging detector for the Israeli Research Reactor IRR-1 at Soreq NRC
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment ( IF 1.5 ) Pub Date : 2021-07-07 , DOI: 10.1016/j.nima.2021.165632
Ilan Mor 1 , Nissan Eldad 1 , Moshe Cohen 1 , Reuven Hacham-Zada 1
Affiliation  

Among the imaging systems used for thermal neutron imaging worldwide, the most prevalent configuration is CCD camera based. At facilities with sufficiently high neutron flux (>1 × 106 n/cm2/sec), the basic design does not necessitate amplification of scintillation photons prior to their registration by the CCD camera. However, for high resolution imaging at low flux reactors, insufficient amount of scintillation photons may reach each CCD pixel, thus, photon statistics becomes the limiting factor over neutron statistics.

As described in this work, introduction of an image-intensifier into the system’s optical chain removed photon statistics limitation, allowed fine focus adjustments and improved image quality. This led to the possibility of performing good quality tomographic scans.



中文翻译:

为 Soreq NRC 的以色列研究堆 IRR-1 开发基于 CCD 的热中子成像探测器

在全球用于热中子成像的成像系统中,最流行的配置是基于 CCD 相机。在中子通量足够高(>1 × 10 6 n/cm 2 /sec),基本设计不需要在闪烁光子被 CCD 相机配准之前对其进行放大。然而,对于低通量反应堆的高分辨率成像,可能到达每个 CCD 像素的闪烁光子数量不足,因此,光子统计成为中子统计的限制因素。

正如在这项工作中所描述的,将图像增强器引入系统的光链消除了光子统计限制,允许微调焦距并提高图像质量。这导致了进行高质量断层扫描的可能性。

更新日期:2021-07-13
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