Simulations and design of detectors for imaging with epithermal neutrons

A position sensitive detector for epithermal neutrons is being developed as a tool for neutron resonance tomography at pulsed neutron sources. Neutron-scattering effects in the detector elements were investigated with GEANT4 simulations. The simulations show that the effect of neutron scattering is generally low, and can be further suppressed by proper choice of construction materials.