Evaluation of Motion Blur in High-Speed Neutron Imaging at Kyoto University Research Reactor

Evaluation of Motion Blur in High-Speed Neutron Imaging at Kyoto University Research Reactor

Daisuke Ito, Yasushi Saito

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Abstract. The rapid multiphase flow phenomena such as the flow with vaporization and condensation must be clarified for the safety analysis and severe accident analysis for light water reactors. To understand the multiphase flows experimentally, measurement technique with high temporal resolution is required. In addition, the multiphase flow has spatial distributing characteristics, thus two- or three-dimensional visualization techniques are suitable for the understanding of the flow structure. In this study, temporal resolution of the neutron imaging technique was enhanced for the observation of rapid multiphase flow behavior. The existing imaging system was upgraded to improve the frame rate, and imaging with a frame rate of 10,000 fps could be achieved at B-4 port in Kyoto University Research Reactor (KUR) at 5 MW operation. Then, the imaging results were evaluated by using a rotational disc system. The relation between the rotational speed and motion blur was investigated in the high-speed neutron imaging.

High-Speed Neutron Imaging, Motion Blur, Rotating Disc

Published online 1/5/2020, 6 pages
Copyright © 2020 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Daisuke Ito, Yasushi Saito, Evaluation of Motion Blur in High-Speed Neutron Imaging at Kyoto University Research Reactor, Materials Research Proceedings, Vol. 15, pp 262-267, 2020

DOI: https://doi.org/10.21741/9781644900574-41

The article was published as article 41 of the book Neutron Radiography

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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