Studies of a prototype position sensitive neutron detector based on silicon photomultipliers

A low-cost neutron detector based on silicon photomultiplier tubes and a single layer of ZnS(Ag):6LiF scintillator has been developed. The detector uses only 4 silicon photomultiplier tubes to determine the coordinate. A transparent PMMA-based organic light guide is used as the light guide. The method of coordinate determination is based on the analysis of photon attenuation in the volume of the plastic light guide. The structure of such type of detectors is described. Modelling of optical parameters of position-sensitive detectors of this type is carried out. The spatial resolution parameters for detectors of 2 sizes: 50 mm and 100 mm are determined. The obtained resolution parameters are 10 mm and 7 mm, respectively. Methods of increasing the resolution of this type of detectors and their possible use for registration of other types of radiation are proposed.