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Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 92: Detektorsysteme V

T 92.5: Talk

Thursday, March 28, 2019, 17:05–17:20, S03

Geant4 simulation of a detector prototype for neutron radiographyChristoph Günther, •Nina Höflich, Oliver Pooth, Christian Teichrib, and Simon Weingarten — III. Physikalisches Institut B, RWTH Aachen University, D-52056 Aachen

At the Physics Institute III B, a detector for fast neutron radiography measurements is under development. Neutron radiography allows for the discrimination of different materials in heterogeneous probes and is especially sensitive to light elements.

For this purpose, a neutron camera prototype made of 16 stilbene scintillator crystals coupled to a 4 × 4 pixel SiPM array is constructed. A radioactive AmBe source is used for detector tests with neutrons of energies up to 11 MeV.

In this talk, a Geant4 simulation of the detector prototype is presented. The focus lies on the simulation of the fast neutron interactions and the scintillation process as well as the propagation of the scintillation light inside the detector. Also, the interaction of neutrons with different test materials is simulated.

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