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Outline

The project of RIKEN accelerator-driven compact neutron system (RANS) has two main development goals: the first is the realization of an evaluation and analysis system for use in the field of manufacturing, and the second is the development of non-destructive inspection techniques and equipment for preventive maintenance at infrastructure sites. RANS-II with a total length of 5 m, which can be introduced into the onsite of manufacturing field, has been successfully developed. Neutron salt meter, RANS-μ for outdoor use was successfully used to measure bridge salt density on national highways, and inspection support performance catalogue of MILT. The transportable RANS-III will finally be installed inside a tractor.

Fields

Physics, Engineering, Interdisciplinary science and engineering

Keywords

Accelerator-based compact neutron system, Characterization of microstructure and texture evaluation in steels, Research and development of non-destructive inspection for infrastructures, Visualization of water and air hole in concrete slabs, Detection of　salt damage in the concrete by prompt-gamma neutron activation analysis

Subjects

1. Research and development of compact neutron system for practical use at anytime, anywhere
2. Ultra compact neutron salt-meter, RANS-μ, against salt-damage
3. Realization of the on-site use compact neutron system
4. Non- destructive test technology with quantitative analysis
5. R&D for the water exploration and elemental analysis on the Moon and Mars

Selected Publications

1. Otake, Y., Wakabayashi, Y., Takamura, M., Mizuta, M., and Takanashi, T.: “RIKEN Compact Neutron Source Systems RANS Project”,　Nuclear Physics News, Volume 33, Issue 2, Pages 17-21, (2023).
2. Hatsuda, M., Kawasaki, H., Yamakura, F., Taketani , A., Takanashi, T., Wakabayashi, Y., Otake, Y., Kamata, Y., Kurokawa, C., Ikeda, K., Shigenaga, A., Iesaki, T., and Nagaoka, I.: “Effects of neutron radiation as cosmic radiation on food resources”, Journal of Neutron Research,25, 41–46, (2023).
3. Ikeda, S., Kobayashi, T., Otake, Y., Matsui, R., Okamura, M., and Hayashizaki, N.: “Fabrication and RF test of the 500 MHz-RFQ linear accelerator for a transportable neutron source RANS-III” J. Neutron Res. vol. 24, no. 3-4, pp. 249-259 (2022).
4. 大竹淑恵，水田真紀.: “中性子技術を用いたコンクリートの評価技術の最前線③小型中性子源の開発と維持管理への活用最前線，”, コンクリート工学. Vol.60，No.4，pp.406-411 (2022).
5. Wakabayashi, Y., Yan, M., Takamura, M., Ooishi, R., Watase, H., Ikeda, Y., and Otake,Y.: “I Development of neutron salt-meter RANS-μ for non-destructive inspection of concrete structure at on-site use”, J. Neutron Res. 24, no. 3-4, pp. 411-419 (2022).

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