Designing a new graphite illuminator for imaging facility of INUS to improve neutron beam uniformity and intensity

Nazemi, Ehsan; Dinca, M.; Amir, Mohammad; Rokrok, B.; Dastjerdi, M.H. Choopan

doi:10.1016/j.apradiso.2019.04.012

Cited by 2 publications

(1 citation statement)

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“…The illuminator, as a first component starting from the source, is typically a block of graphite that is placed near the flux center line to provide an approximately uniform illumination system [13]. The neutrons emitted by the target in the tube are not radiating in all directions uniformly.…”

Section: Collimator Optimizationmentioning

confidence: 99%

Progress in commissioning a neutron/X-ray radiography and tomography systems at IAEA NSIL

Gan

Abdelouahed²,

Skukan³

et al. 2022

J. Inst.

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The Nuclear Science and Instrumentation Laboratory (NSIL) is currently establishing a Neutron Science Facility (NSF) based on two compact neutron generators: Deuterium-Deuterium (DD), resulting in 2.45 MeV neutrons, and Deuterium-Tritium (DT), resulting in 14.1 MeV neutrons, with maximum source intensities up to 5 × 106 n/s and 4 × 108 n/s over 4π, respectively. Neutron/X-ray radiography and tomography are two of the applications the NSF will be equipped with. In this paper, we report the state of the radiography and tomography system, and the neutron/X-ray radiography and tomography experiments we performed. Good radiographs and tomographs are obtained with X-ray. The spatial resolution of the X-ray radiography system is measured to be about 0.1 mm. The thermal neutron radiographs and fast neutron radiographs have proved that the DD neutron generator will be beneficial to demonstrate neutron radiography capabilities for educational purposes. Additionally, the detail of the collimator optimization of the DD neutron radiography was presented.

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Section: Collimator Optimizationmentioning

confidence: 99%