FISH: A thermal neutron imaging station at HOR Delft

Zhou, Zhou; Plomp, J.; Eijck, Lambert van; Vontobel, Peter; Harti, Ralph P.; Lehmann, Eberhard; Pappas, C.

doi:10.1016/j.jasrep.2018.05.015

Cited by 11 publications

(14 citation statements)

References 9 publications

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“…The neutron tomography measurements were performed at the FISH beam line of the research reactor at the TU Delft, The Netherlands (7). The data collection took 15 hours, using a 100-m scintillation After filter corrections for dead camera pixels on the individual images, standard filtered back projection was used to reconstruct the three-dimensional computer model shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

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Neutron tomography of Van Leeuwenhoek’s microscopes

et al. 2021

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The technique of neutron tomography has, after 350 years, enabled a first look inside the iconic single-lens microscopes of Antoni van Leeuwenhoek. Van Leeuwenhoek’s 17th-century discovery of “animalcules” marks the birth of microbiology. His skillfully self-produced microscope lenses remained unsurpassed for over 150 years. Neutron tomography now enabled us to reveal the lens types Van Leeuwenhoek used. We argue that Van Leeuwenhoek’s instruments incorporate some innovations that testify to an awareness of concurrent developments. In particular, our analysis shows that for making his best-performing microscopes, Van Leeuwenhoek deployed a lens-making procedure popularized in 1678 by Robert Hooke. This is notable, as Hooke always wanted to find the secret of Van Leeuwenhoek’s lenses, but never managed to do so. Therefore, Van Leeuwenhoek was far from the isolated scholar he is often claimed to be; rather, his secrecy about his lenses was motivated by an attempt to conceal his indebtedness to Hooke.

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Section: Resultsmentioning

confidence: 99%

“…The neutron tomography measurements were performed at the FISH beam line of the research reactor at the TU Delft, The Netherlands ( 7 ). The data collection took 15 hours, using a 100-μm scintillation screen, which renders a spatial resolution of approximately 150 μm.…”

Section: Resultsmentioning

confidence: 99%

Neutron tomography of Van Leeuwenhoek’s microscopes

et al. 2021

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“…At time of this publication the developed CA-SIR framework has been distributed for use at two different neutron imaging facilities across the globe: DINGO, ANSTO, Australia [4], and FISH, TUDelft, The Netherlands [28]. It will be further tested to explore the possible increase in object throughput at these imaging stations for a variety of different samples.…”

Section: Discussionmentioning

confidence: 99%

Statistical image reconstruction for high-throughput thermal Neutron Computed Tomography

Brown

Garbe

Pelliccia³

2019

Nuclear Instruments and Methods in Physics Research Section A:

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Neutron Computed Tomography (CT) is an increasingly utilised non-destructive analysis tool in material science, palaeontology, and cultural heritage. With the development of new neutron imaging facilities (such as DINGO, ANSTO, Australia) new opportunities arise to maximise their performance through the implementation of statistically driven image reconstruction methods which have yet to see wide scale application in neutron transmission tomography. This work outlines the implementation of a convex algorithm statistical image reconstruction framework applicable to the geometry of most neutron tomography instruments with the aim of obtaining similar imaging quality to conventional ramp filtered back-projection via the inverse Radon transform, but using a lower number of measured projections to increase object throughput. Through comparison of the output of these two frameworks using a tomographic scan of a known 3 material cylindrical phantom obtain with the DINGO neutron radiography instrument (ANSTO, Australia), this work illustrates the advantages of statistical image reconstruction techniques over conventional filter back-projection. It was found that the statistical image reconstruction framework was capable of obtaining image estimates of similar quality with respect to filtered back-projection using only 12.5% the number of projections, potentially increasing object throughput at neutron imaging facilities such as DINGO eight-fold.

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“…To enable non-invasive inspection, computed tomography using both X-rays and neutrons, was performed, which resulted in 3D-computed models of the sphere. X-ray micro-computed tomography (µCT) was done with a GE Phoenix Nano Focus X-ray System, and neutron computed tomography (NT) at the FISH beam line [29] of Delft University of Technology, the Netherlands. The tomography voxel size provided is 40 × 40 × 40 µm 3 by µCT and 150 × 150 × 150 µm 3 by NT.…”

Section: Methodsmentioning

confidence: 99%

Unravelling the construction of silver filigree spheres from a seventeenth century shipwreck using non-invasive imaging

et al. 2022

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The structure of five rare filigree spheres from a seventeenth century shipwreck was examined in order to unravel their condition, manufacturing process and function. This study focuses on the application of non-invasive imaging techniques: optical microscopy, X-radiography, X-ray micro-computed tomography and neutron computed tomography. A valuation of different aspects of the applied techniques was made, aiding stakeholders in decision-making on research and conservation. The combination of theory and scientific information was used to obtain an improved understanding of the manufacturing process and function of the filigree spheres.

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FISH: A thermal neutron imaging station at HOR Delft

Cited by 11 publications

References 9 publications

Neutron tomography of Van Leeuwenhoek’s microscopes

Neutron tomography of Van Leeuwenhoek’s microscopes

Statistical image reconstruction for high-throughput thermal Neutron Computed Tomography

Unravelling the construction of silver filigree spheres from a seventeenth century shipwreck using non-invasive imaging

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