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T: Fachverband Teilchenphysik
T 46: Detector systems III
T 46.3: Vortrag
Mittwoch, 1. April 2020, 17:05–17:20, H-HS II
A multi-pixel camera for fast neutron radiography — Christoph Günther, •Nina Höflich, and Oliver Pooth — III. Physikalisches Institut B, RWTH Aachen University
The neutron radiography group at the Physics Institute III B, RWTH Aachen University, develops a multi-pixel camera for fast neutron radiography. Fast neutron radiography has the aim to resolve structures in heterogeneous test objects that cannot be well investigated by common gamma or X-ray radiography.
An Americium-Beryllium radioactive source or a neutron generator can be used as a mobile neutron source. For neutron detection, the organic scintillator Stilbene is used, which allows for neutron-gamma signal discrimination on an event-by-event basis.
So far, two prototypes were built: a single-pixel detector and a 16-pixel camera with a scintillator pixel volume of 5×5×25 mm3. The scintillators are coupled to SiPMs for scintillation light detection. To optimize the detector setup and to study applications, a Geant4 simulation of the whole measurement setup is under development.
The talk will focus on recent results with the 16-pixel camera and simulation results concerning possible detector improvements.