  The project involved the development of a precision radioactive
Source-Positioning System to enable the absolute characterization of a
gamma-ray Detector-Development Platform at the Division of Nuclear Physics at
Lund University in conjunction with the Detector Group of the European
Spallation Source. The gamma-ray radiation associated with an
actinide-Beryllium source was mapped using a cerium bromide scintillation
crystal coupled to photomultiplier tube at various relative source and detector
configurations. The data obtained are used to determine the spatial and energy
profiles of the neutron/gamma-ray beams associated with the source. This will
in turn enable the unfolding of detector responses via simulation toolkits such
as Geant4 and may also facilitate the future design of a boron-carbide
beam-hardening sleeve.
