Neutron imaging detector concepts

Important challenges in thermal and fast-neutrons imaging are the detection efficiency and localization properties over large detection areas. Several new concepts have been developed to meet these challenges, using composite (Gd/CsI, LiF/CsI) and polyethylene convertors coupled to gas-avalanche multipliers of various kinds (including cascaded GEM and THGEM). The R&D has been pursued with Noble-liquid converters.