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arXiv · 2010.15695

Simulation of the Response of the Solid State Neutron Detector for the European Spallation Source

L. Boyd·E. Rofors·J. R. M. Annand·K. G. Fissum·R. Hall-Wilton·R. Al Jebali·K. Kanaki·K. Livingston·V. Maulerova·N. Mauritzson·R. Montgomery·H. Perrey·B. Seitz
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Abstract

The characteristics of the Solid-state Neutron Detector, under development for neutron-scattering measurements at the European Spallation Source, have been simulated with a Geant4-based computer code. The code models the interations of thermal neutrons and ionising radiation in the 6Li-doped scintillating glass of the detector, the production of scintillation light and the transport of optical, scintillation photons through the the scintillator, en route to the photo-cathode of the attached multi-anode photomultiplier. Factors which affect the optical-photon transport, such as surface finish, pixelation of the glass sheet, provision of a front reflector and optical coupling media are compared. Predictions of the detector response are compared with measurements made with neutron and gamma-ray sources, a collimated alpha source and finely collimated beams of 2.5 MeV protons and deuterons.

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L. Boyd, E. Rofors, J. R. M. Annand, K. G. Fissum, R. Hall-Wilton, R. Al Jebali, K. Kanaki, K. Livingston, V. Maulerova, N. Mauritzson, R. Montgomery, H. Perrey, B. Seitz. 2020-10-29. Simulation of the Response of the Solid State Neutron Detector for the European Spallation Source. https://doi.org/10.1016/j.nima.2021.165174

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