A compact neutron/gamma imager for nuclear security applications

适用于核安全应用的紧凑型中子/伽马成像仪

• 批准号: ST/M007162/1
• 负责人: Paul Sellin
• 金额: $ 7.37万
• 依托单位: University of Surrey
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FM007162%2F1
• 关键词: compact; neutron; gamma; imager; nuclear

In this project we will develop a compact, portable imaging detector for mixed-field fast neutron and gamma ray imaging for nuclear security applications. The detector uses digital data acquisition methods combined with the latest type of plastic scintillator that provides real-time neutron/gamma discrimination and imaging performance.The proposed digital n/gamma detection technology has come from neutron/gamma detection methods developed within the STFC nuclear physics programmes. Various digital pulse processing algorithms and methods have been developed for position sensitivity and n/gamma discrimination in a variety of nuclear physics detectors, including those used in the AGATA array and the HISPEC programme at FAIR/GSI. Neutron detection techniques using liquid scintillators and pulse shape discrimination methods have been developed at the DEMON array at GANIL and have recently been upgraded for to a digital data acquisition system. The proposed device will be developed for use in nuclear security n/gamma imaging applications, and has been designed to meet the requirements of the Nuclear Security group at AWE Aldermaston. The project will principally address the Global Challenge Security theme, in the areas of border security and nuclear containment and remediation. However the n/gamma imaging and detection capability of these device will also have application to environmental radioactivity monitoring within the Global Challenge Environment theme.

在这个项目中，我们将开发一个紧凑的，便携式成像探测器的混合场快中子和伽马射线成像的核安全应用。该探测器采用数字数据采集方法，结合最新类型的塑料闪烁体，提供实时中子/伽马鉴别和成像性能。拟议的数字中子/伽马探测技术来自STFC核物理方案内开发的中子/伽马探测方法。各种数字脉冲处理算法和方法已被开发用于各种核物理探测器的位置灵敏度和n/伽马鉴别，包括FAIR/GSI的AGATA阵列和HISPEC计划中使用的算法和方法。在GANIL的DEMON阵列上开发了使用液体稀释器和脉冲形状鉴别方法的中子探测技术，最近已升级为数字数据采集系统。拟议的设备将被开发用于核安全n/伽马成像应用，并已被设计为满足AWE Aldermaston核安全组的要求。该项目将主要涉及边境安全和核遏制及补救领域的全球挑战安全主题。然而，这些设备的n/伽马成像和检测能力也将应用于全球挑战环境主题内的环境放射性监测。

项目成果

Neutron-gamma discrimination via PSD plastic scintillator and SiPMs

通过 PSD 塑料闪烁体和 SiPM 进行中子伽马辨别

• DOI: 10.1088/1742-6596/763/1/012007
• 发表时间: 2016
• 期刊: Conference Series
• 作者: Taggart M