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arXiv · 1203.0181

Concept of a novel fast neutron imaging detector based on THGEM for fan-beam tomography applications

M. Cortesi·R. Zboray·R. Adams·V. Dangendorf·H. -M. Prasser
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Abstract

The conceptual design and operational principle of a novel high-efficiency, fast neutron imaging detector based on THGEM, intended for future fan-beam transmission tomography applications, is described. We report on a feasibility study based on theoretical modeling and computer simulations of a possible detector configuration prototype. In particular we discuss results regarding the optimization of detector geometry, estimation of its general performance, and expected imaging quality: it has been estimated that detection efficiency of around 5-8% can be achieved for 2.5MeV neutrons; spatial resolution is around one millimeter with no substantial degradation due to scattering effects. The foreseen applications of the imaging system are neutron tomography in non-destructive testing for the nuclear energy industry, including examination of spent nuclear fuel bundles, detection of explosives or drugs, as well as investigation of thermal hydraulics phenomena (e.g., two-phase flow, heat transfer, phase change, coolant dynamics, and liquid metal flow).

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M. Cortesi, R. Zboray, R. Adams, V. Dangendorf, H. -M. Prasser. 2012-03-01. Concept of a novel fast neutron imaging detector based on THGEM for fan-beam tomography applications. https://doi.org/10.1088/1748-0221/7/02/c02056

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