Thermal neutron detector and neutron imaging based on COTS CMOS imagers

MARTIN PEREZ; BLOSTEIN, JUAN JERÓNIMO; ALCALDE BESSIA, FABRICIO; TARTAGLIONE, AURELIANO; IVAN SIDELNIK; MIGUEL SOFO HARO; SUÁREZ, SERGIO; GIMENEZ, MELISA LUCÍA; BERISSO, MARIANO GÓMEZ; JOSE LIPOVETZKY

Congreso; Third Barcelona Techno Week; 2017

We will introduce a novel low cost position sensitive thermal neutron detection technique, based on a Commercial Off The Shelf CMOS image sensor covered with a Gadolinium containing conversion layer. A thermal neutron detection efficiency of 11.3% has been experimentally obtained. It was experimentally verified that the thermal neutron detection efficiency of this technique is independent onthe intensity of the incident thermal neutron flux. Higher detection efficiencies could be achieved using thicker conversion layers. Based on the experimental results, a spatial resolution better than 25 μm is expected. This spatial resolution makes the proposed technique specially useful for neutron beam characterization, neutron beam dosimetry, high resolution neutron imaging, and several neutron scattering techniques.