Optimisation of a neutron imaging system using the modulation transfer function
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Date
2023-12
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Publisher
Elsevier
Abstract
The use of the modulation transfer function was explored for the characterisation and optimisation of the optical system used for tomographic imaging on the DINGO instrument at the Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, Lucas Heights, Australia. Both a Siemens star and a phantom were used to determine the modulation transfer function and the results are compared. This allowed the optimal configuration of the instrument to be determined and the establishment of a relationship between sample dimension, exposure time and radiograph resolution to be developed. For tomographic studies of large samples, best results were achieved with DINGO configured in high-flux mode (L/D = 500), with a 6LiF/ZnS scintillator screen, an Iris 15TM sCMOS detector, a 50 mm lens, and an exposure time between 4 and 8 s. © 2023 The Authors. Published by Elsevier B.V. - Open Access CC-BY.
Description
Keywords
Neutrons, Modulation, Functions, Neutron diffraction, Resolution, ANSTO, Measuring instruments, Scattering
Citation
Grigorova, V., Giri, P., Bevitt, J. J., & Clark, S. M. (2023). Optimisation of a neutron imaging system using the modulation transfer function. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1057, 168754. doi:10.1016/j.nima.2023.168754