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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. Teshigawara, M., Ikeda, Y., Yan, M., Muramatsu, K., Sutani, K., Fukuzumi, M., Noda, Y., Koizumi, S., Saruta, K., and Otake, Y.: “New Material Exploration to Enhance Neutron Intensity below Cold Neutrons: Nanosized Graphene Flower Aggregation” , Nanomaterials 2023, 13(1), 167486 (2022).
2. Watanabe, A., Sekiguchi, K., Ino, T., Inoue, M., Nakai, S., Otake, Y., Taketani, A., and Wakabayashi, Y.: “Absolute 3 He polarimetry for a double-chambered cell using transmission of thermal neutrons” , Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.Vol. 1043, (2022).
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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