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Anghel V.,Chalk River Laboratories | Armitage J.,Carleton University | Botte J.,Carleton University | Boudjemline K.,Carleton University | And 15 more authors.
AIP Conference Proceedings | Year: 2011

In the last decade, many groups around the world have been exploring different ways to probe transport containers which may contain illicit Special Nuclear Materials such as uranium. The muon tomography technique has been proposed as a cost effective system with an acceptable accuracy. A group of Canadian institutions (see above), funded by Defence Research and Development Canada, is testing different technologies to track the cosmic muons. One candidate is the single wire Drift Chamber. With the capability of a 2D impact position measurement, two detectors will be placed above and two below the object to be probed. In order to achieve a good 3D image quality of the cargo content, a good angular resolution is required. The simulation showed that 1mrad was required implying the spatial resolution of the trackers must be in the range of 1 to 2 mm for 1 m separation. A tracking system using three prototypes has been built and tested. The spatial resolution obtained is 1.7 mm perpendicular to the wire and 3 mm along the wire. © 2011 American Institute of Physics.


Anghel V.,Atomic Energy Canada Ltd. | Armitage J.,Carleton University | Botte J.,Carleton University | Boudjemline K.,Carleton University | And 14 more authors.
ANIMMA 2011 - Proceedings: 2nd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications | Year: 2011

The CRIPT project brings together several Canadian institutions, concerned with the detection of Special Nuclear Materials (SNM), addressing a requirement at ports-of-entry for detection of SNM in the many thousands of containers that flow into and out of Canada every day, while at the same time providing a way of monitoring the contents of nuclear waste storage containers, for waste management and non-proliferation reasons. The scale of these applications is large - typically tens of cubic metres, requiring detectors that can cover a large area at a minimum cost. The CRIPT project considered drift chambers adapted from high energy physics experience, as one of its technology choices. We report here on the performance of a full scale prototype, which covers an area of 2.4m x 1.2m with only 6 readout channels, and provides a 2D data point with accuracies (in x and z) of around 2 mm. © 2011 IEEE.


Anghel V.,Chalk River Laboratories | Armitage J.,Carleton University | Botte J.,Carleton University | Boudjemline K.,Carleton University | And 15 more authors.
IEEE Nuclear Science Symposium Conference Record | Year: 2012

The Cosmic Ray Inspection and Passive Tomography (CRIPT) collaboration has completed the testing of small muon detector prototypes and has commenced construction of a 12 layer, 4m 2 prototype muon scattering tomography system. Three areas of CRIPT's progress are reported: (1) results from the testing of one of drift chamber muon detector prototypes; (2) algorithms for muon momentum estimation and tomographic image reconstruction; and (3) the status of the large prototype construction. The intrinsic resolution of the 2.4 m long, 1.2 m wide drift chamber muon detector prototype has been measured to be 1.73 mm perpendicular to the anode wire, and 2.9 mm parallel to the anode. A Bayesian estimator algorithm has been developed for muon momentum estimation. From simulations, the momentum resolution is expected to be highly asymmetric, varying from -18% to +92% integrated across the cosmic ray muon spectrum. A novel Point-of-Closest-Approach (PoCA) algorithm has also been developed for tomographic imaging. Multiple possible muon trajectories are assumed for each muon. The expected completion date for the construction is summer 2012, with first tomographic data following soon afterward. © 2011 IEEE.


Anghel V.,Chalk River Laboratories | Armitage J.,Carleton University | Botte J.,Carleton University | Boudjemline K.,Carleton University | And 19 more authors.
IEEE Nuclear Science Symposium Conference Record | Year: 2012

The Cosmic Ray Inspection and Passive Tomography (CRIPT) project is investigating muon scattering tomography (MST) for applications in border security, nuclear non-proliferation, and nuclear waste characterization. The construction of the full-scale prototype MST system began in the Summer of 2011 and was completed in September 2012. The CRIPT detector employs 12 layers of scintillator to track atmospheric muons before and after passage through a volume of interest, and to estimate each muon's momentum. The total height of the system is 5.5 m and its weight is 20 tonnes. Details of its construction are presented. After the integration of the custom data acquisition electronics, the commissioning of the CRIPT detector began. The first tomographic images were obtained in October 2012 and are presented here. © 2012 IEEE.


Stocki T.J.,Health Canada | Warren C.,Health Canada | Magill M.P.C.,Health Canada | Morgan B.E.,Health Canada | And 24 more authors.
IEEE Nuclear Science Symposium Conference Record | Year: 2012

Muons, which are produced naturally in the upper atmosphere, can be used to scan cargo for special nuclear materials (SNM). Preliminary simulated results show that detecting the presence of these materials can be accomplished by measuring the scattering of cosmic ray muons. Machine learning tools have been used on these data to classify it as SNM or not. © 2012 IEEE.


Azmi P.,Environment Canada | Volchek K.,Environment Canada | Punt M.,MPunt Environmental Consulting | Kitching F.,International Safety Research | And 5 more authors.
Proceedings of the 35th AMOP Technical Seminar on Environmental Contamination and Response | Year: 2012

The aim of this paper is to present findings from a study to develop a roadmap for a system to engage private sector contractors for critical infrastructure decontamination immediately following a Chemical, Biological, Radiological, Nuclear and Explosive (CBRNE) event. The project involved the development of methods for the compilation of information on potential Canadian CBRNE contractors with respect to their experience and operational capabilities. This information can be used to create a database of potential Canadian contractors capable of performing CBRNE decontamination of sites and infrastructure. Information was also gathered on the contracting mechanisms that could be used to engage them in the decontamination and site remediation after a CBRNE event. A summary of similar networks developed by countries, such as the UK and the USA was included and that information was used to make recommendations applicable to a Canadian private sector contractor's network. The eventual development of the network of contractors will enhance Canada's preparedness and contingency response capabilities after a CBRNE event.


Lambert P.G.,Environment Canada | Goldthorp M.,Environment Canada | Volchek K.,Environment Canada | Brown C.E.,Environment Canada | And 6 more authors.
Proceedings of the 35th AMOP Technical Seminar on Environmental Contamination and Response | Year: 2012

Environment Canada, Transport Canada, Defence Research and Development Canada's Centre for Security Science are undertaking projects to improve Canada's resilience to a potential CBRNE event. Collectively, these organizations recently developed and delivered an exercise in Hamilton, Ontario that examined the role of private industry during the response to a CBRNE event involving emergency services from all levels of government. An overview of the exercise including a discussion of some of the lessons learned is presented in this paper. The exercise was one part of a larger program whose intention is to integrate the capabilities of private sector industry in all aspects of a CBRNE event.


Li C.,Radiation Protection Bureau | Hauck B.,Radiation Protection Bureau | Fraser A.,Cornwall Protective Services | Burton G.,International Safety Research | And 8 more authors.
Health Physics | Year: 2015

Children have a higher chance of being contaminated by radioactive materials during a radiological or nuclear (RN) emergency. They are more sensitive to radiation health effects and suffer more significant psychosocial impacts than adults during emergency response. This paper presents a summary of recommendations on effective management of children during an RN emergency. These recommendations intend to be additional considerations for existing RNresponse protocols and procedures implemented at local, state/provincial, or national level. 2015 © Lippincott Williams & Wilkins.


Lemay F.,International Safety Research
Health Physics | Year: 2012

This paper presents a multichannel extension to the Poisson-based Bayesian statistical analysis of the net count rate in a sample. The derivation gives the net count rate probability density distribution in analytical form. In addition, it presents a Normal approximation that is appropriate when the number of counts is large. The new analysis can exhibit a lower false positive probability than methods that consider the counts for each peak separately or sum the counts for all the expected peaks associated with a radioactive substance. © 2012 Health Physics Society.

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