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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 compact neutron system RANS-III mounted in the trailer is scheduled for neutron generation demonstration tests in FY2025.

Fields

Physics, Engineering, Space Science, Interdisciplinary science and engineering

Keywords

Research and Development of Accelerator-driven compact neutron systems, Research and development of non-destructive inspection for infrastructures, Detection of　salt damage in the concrete by prompt-gamma neutron activation analysis Visualization of water and air hole in concrete slabs, and anchorage of cable stayed bridge Neutron and gamma-ray irraditation

Subjects

1. Research and development of compact neutron systems for nondestructive measurement anytime, anywhere
2. Development of a neutron non-destructive measurement system for preventive maintenance of infrastructure
3. Trans-portable compact neutron system RANS-III, installed into the trailer
4. Neutron salt meter RANS-μ. realization of 3D mapping visualization of salt concentration
5. Realization of the on-site use compact neutron system
6. R&D for the water exploration and elemental analysis on the Moon and Mars

Selected Publications

1. Fukuchi, T., Onda, M., Ichioka, T., Yabuki, T., and Otake, Y.: “Study of non-destructive diagnostic technology for cable-stayed bridge anchorage using neutron beam”, Concrete Structure Scenarios, JSMS, 24, 565-570 (2024).
2. Otake, Y., Wakabayashi, Y., Takamura, M., Mizuta, M., and Takanashi, T.: “RIKEN Compact Neutron Source Systems RANS Project”,　Nucl. Phys. News. 33, Issue 2, 17-21 (2023).
3. 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 Res. 25, 41-46 (2023).
4. 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. 24(3-4), 249-259 (2022).
5. Wakabayashi, Y., Yan, M., Takamura, M., Ooishi, R., Watase, H., Ikeda, Y., and Otake, Y.: “Development of neutron salt-meter RANS-μ for non-destructive inspection of concrete structure at on-site use”, J. Neutron Res. 24(3-4), 411-419 (2022).

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