Physics of Molecular Imaging Systems
The Physics Institute III B works in cooperation with the Aachen Institute for Nuclear Training GmbH (AiNT) on the development of a neutron radiography system for the non-destructive characterisation of large objects and analysis of material samples in extractive industries. An advantage over other analysis methods such as X-ray radiography is the highly penetrating ability of neutrons. Often it is only possible to conduct superficial characterisations of samples with X-rays whilst neutrons are able to penetrate deeply into the material and thus provide insight into its internal structure and composition.
A 4x4 pixel camera is being build for the radiography system. A feasibility study for a single pixel consisting of a scintillating stilbene crystal encoated in a PTFE housing and coupled to a silicon photomultiplier (SiPM) was already successfully conducted. Future work includes the step towards a 4x4 pixel camera with the individual scintillators being coupled to a SiPM array as well as first radiographic measurements and comparisons of the results with simulations.