Please use this identifier to cite or link to this item:
|Title:||Stochastic image reconstruction for a dual-particle imaging system|
|Authors:||HAMEL Michael; POLACK K; POITRASSON-RIVIERE Alexis; FLASKA Marek; CLARKE Shaun D.; POZZI Sara; TOMANIN ALICE; PEERANI Paolo|
|Citation:||NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT vol. 810 p. 120-131|
|Publisher:||ELSEVIER SCIENCE BV|
|Type:||Articles in periodicals and books|
|Abstract:||Stochastic image reconstruction has been applied to a dual-particle imaging system used for nuclear safeguards applications. The dual-particle imager (DPI) is a combined Compton-scatter and neutron-scatter camera capable of producing separate neutron and photon images. The stochastic origin ensembles (SOE) method has been chosen for fast image reconstruction times compared to list-mode maximum-likelihood estimation-maximization and because no estimation of system response parameters is required. This work contains SOE image reconstructions for a 252Cf point source, two mixed-oxide (MOX) fuel canisters representing point sources, and the MOX fuel canisters representing a distributed source. Simulation of the DPI using MCNPX-PoliMi is validated by comparison of simulated and measured results. Because the quality of a reconstructed SOE image strongly relies on the number of counts and iterations used, the relationship between these quantities is investigated by examining the convergence of an image over many trials.|
|JRC Directorate:||Nuclear Safety and Security|
Files in This Item:
There are no files associated with this item.
Items in repository are protected by copyright, with all rights reserved, unless otherwise indicated.