First i-TED demonstrator: a Compton imager with Dynamic Electronic Collimation

Abstract

i-TED consists of both a total energy detector and a Compton camera primarily intended for the measurement of neutron capture cross sections by means of the simultaneous combination of neutron time-of-flight (TOF) and ${\hat{I}}^3$-ray imaging techniques. TOF allows one to obtain a neutron-energy differential capture yield, whereas the imaging capability is intended for the discrimination of radiative background sources, that have a spatial origin different from that of the capture sample under investigation. A distinctive feature of i-TED is the embedded Dynamic Electronic Collimation (DEC) concept, which allows for a trade-off between efficiency and image resolution. Here we report on some general design considerations and first performance characterization measurements made with an i-TED demonstrator in order to explore its ${\hat{I}}^3$-ray detection and imaging capabilities.

Article published in Nuclear Inst. and Methods in Physics Research, A, Volume 953, article id. 163228 Elsevier / DOI: 10.1016/j.nima.2019.163228 / CC-BY-NC-ND