The REWARD project: Real Time Wide Area Radiation Surveillance with semiconductor detectors

Kuehn, S.

doi:10.1109/nssmic.2013.6829630

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…The authors concluded that it would be extremely useful to localize neutron sources, which, for fast neutrons, could be accomplished with the addition of a HDPE coded mask, while, for thermal neutron, it would have to be achieved with another approach. The real-time wide area radiation surveillance system (REWARD) project [210][211][212][213] consists of the integration of a gamma spectrometer and a neutron detector based on recent silicon technology for, inter alia, homeland security. Despite the security purpose of this project, it can also be useful in scenarios as loss of a radioactive source and radioactive contamination due to nuclear accident.…”

Section: Combination Of Neutron and Gamma Detection Systemsmentioning

confidence: 99%

State-of-the-Art Mobile Radiation Detection Systems for Different Scenarios

Marques

Vale

Vaz

2021

Sensors

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In the last decade, the development of more compact and lightweight radiation detection systems led to their application in handheld and small unmanned systems, particularly air-based platforms. Examples of improvements are: the use of silicon photomultiplier-based scintillators, new scintillating crystals, compact dual-mode detectors (gamma/neutron), data fusion, mobile sensor networks, cooperative detection and search. Gamma cameras and dual-particle cameras are increasingly being used for source location. This study reviews and discusses the research advancements in the field of gamma-ray and neutron measurements using mobile radiation detection systems since the Fukushima nuclear accident. Four scenarios are considered: radiological and nuclear accidents and emergencies; illicit traffic of special nuclear materials and radioactive materials; nuclear, accelerator, targets, and irradiation facilities; and naturally occurring radioactive materials monitoring-related activities. The work presented in this paper aims to: compile and review information on the radiation detection systems, contextual sensors and platforms used for each scenario; assess their advantages and limitations, looking prospectively to new research and challenges in the field; and support the decision making of national radioprotection agencies and response teams in respect to adequate detection system for each scenario. For that, an extensive literature review was conducted.

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Section: Combination Of Neutron and Gamma Detection Systemsmentioning

confidence: 99%

State-of-the-Art Mobile Radiation Detection Systems for Different Scenarios

Marques

Vale

Vaz

2021

Sensors

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“…In order to transport these radiation detection systems and contextual sensors, mobile platforms such as cars, vans and trucks are used. Examples of projects which developed a combination of radiation detection systems include the radiological multi-sensor analysis platform (Rad_Map) [ 16 , 17 ], the sistema mobile per analisi non distruttive e radiometriche (SLIMPORT) [ 18 ], the modular detection system for special nuclear material (MODES_SNM) [ 19 ], the mobile urban radiation search (MURS) [ 20 ], and the real-time wide area radiation surveillance system (REWARD) [ 21 , 22 , 23 , 24 ]. In MODES_SNM, the detection system was also tested in the scanning of maritime containers as a primary control device (next to RPMs), as a secondary control (inspection of containers that already triggered an alarm in a RPM) and by using radioactive samples for identification purposes at Rotterdam seaport.…”

Section: Introductionmentioning

confidence: 99%

Neutron and Gamma-Ray Detection System Coupled to a Multirotor for Screening of Shipping Container Cargo

Marques

Felix

Cruz

et al. 2022

Sensors

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In order to detect special nuclear materials and other radioactive materials in Security and Defense scenarios, normally, a combination of neutron and gamma-ray detection systems is used. In particular, to avoid illicit traffic of special nuclear materials and radioactive sources/materials, radiation portal monitors are placed at seaports to inspect shipping-container cargo. Despite their large volume (high efficiency), these detection systems are expensive, and therefore only a fraction of these containers are inspected. In this work, a novel mobile radiation detection system is presented, based on an EJ-200 plastic scintillator for the detection of gamma rays and beta particles, and a neutron detector EJ-426HD plastic scintillator (with 6Li) embedded in a compact and modular moderator. The use of silicon photomultipliers in both detectors presented advantages such as lightweight, compactness, and low power consumption. The developed detection system was integrated in a highly maneuverable multirotor. Monte Carlo simulations were validated by laboratory measurements and field tests were performed using real gamma-ray and neutron sources. The detection and localization within one meter was achieved using a maximum likelihood estimation algorithm for 137Cs sources (4 MBq), as well as the detection of 241Am–beryllium (1.45 GBq) source placed inside the shipping container.

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