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Journal Articles

Development of active neutron NDA system

Toh, Yosuke

JAEA-Conf 2019-001, p.47 - 52, 2019/11

no abstracts in English

Journal Articles

Development of active neutron NDA system for radioactive nuclear materials

Toh, Yosuke; Ozu, Akira; Tsuchiya, Harufumi; Furutaka, Kazuyoshi; Kitatani, Fumito; Komeda, Masao; Maeda, Makoto; Koizumi, Mitsuo

Proceedings of INMM 60th Annual Meeting (Internet), 7 Pages, 2019/07

Journal Articles

Development of active neutron NDA system for nuclear materials

Toh, Yosuke; Ozu, Akira; Tsuchiya, Harufumi; Furutaka, Kazuyoshi; Kitatani, Fumito; Komeda, Masao; Maeda, Makoto; Koizumi, Mitsuo; Heyse, J.*; Paradela, C.*; et al.

Proceedings of INMM 59th Annual Meeting (Internet), 9 Pages, 2018/07

Journal Articles

Development of active neutron NDA techniques for nuclear nonproliferation and nuclear security

Toh, Yosuke; Ozu, Akira; Tsuchiya, Harufumi; Furutaka, Kazuyoshi; Kitatani, Fumito; Komeda, Masao; Maeda, Makoto; Kureta, Masatoshi; Koizumi, Mitsuo; Seya, Michio; et al.

EUR-28795-EN (Internet), p.684 - 693, 2017/00

Journal Articles

Development of active neutron NDA techniques for nonproliferation and nuclear security, 2; Study on a compact NRTA system

Tsuchiya, Harufumi; Kitatani, Fumito; Maeda, Makoto; Kureta, Masatoshi

Proceedings of INMM 57th Annual Meeting (Internet), 6 Pages, 2016/07

From a viewpoint of nuclear safeguards and nuclear security, it has recently become important to develop a non-destructive assay (NDA) system that accurately determines the amount of special nuclear materials (SNMs) in various samples such as spent fuels, next generation MA-Pu fuels and fuel debris. One candidate of those NDA techniques is neutron resonance transmission analysis (NRTA). It relies on a neutron time-of-flight measurement and is a well-established method to apply for the accurate evaluations of nuclear data, including total cross sections and resonance parameters. The potential of NRTA to quantify SNM in complex materials has been already demonstrated by performing NRTA measurement at IRMM/GELINA under collaboration of JAEA and JRC. However, a present NRTA system usually has a large electron accelerator facility to generate intense neutrons, whereas this is very difficult to apply to various facilities that need to measure SNM. Therefore a compact NRTA system would be required for practical applications of quantifying SNM in a variety of samples. In order to realize a compact NRTA system, we are developing a prototype with a D-T neutron generator that has a pulse width of 10 $$mu$$s and an average maximum neutron yield ranging from $$10^{8}$$ n/s to $$2times10^{9}$$ n/s. Numerical calculations were used to optimize the system performance to quantify SNM and MA in spent and MA-Pu fuels. In this presentation, those numerical calculation results, together with a brief description of the prototype, are presented. In addition, we discuss a future prospect of a compact NRTA system equipped with a neutron source with a shorter pulse width (ex. 100 ns) and a more intense neutron yield.

Oral presentation

Development of a neutron transport system for neutron resonance densitometry

Kitatani, Fumito; Koizumi, Mitsuo; Tsuchiya, Harufumi; Takamine, Jun; Kureta, Masatoshi; Harada, Hideo; Seya, Michio; Hori, Junichi*; Sano, Tadafumi*

no journal, , 

no abstracts in English

Oral presentation

Oral presentation

Development of active neutron NDA apparatus for nuclear non-proliferation and nuclear security, 1; Project overview and development of Prompt Gamma-ray Analysis system

Toh, Yosuke; Furutaka, Kazuyoshi; Ozu, Akira; Tsuchiya, Harufumi; Kitatani, Fumito; Maeda, Makoto; Komeda, Masao; Koizumi, Mitsuo; Seya, Michio

no journal, , 

no abstracts in English

Oral presentation

Oral presentation

Needs for neutron source and nuclear data in developments of an active neutron non-destructive system

Toh, Yosuke; Maeda, Makoto; Tsuchiya, Harufumi; Ozu, Akira; Furutaka, Kazuyoshi; Kitatani, Fumito; Komeda, Masao

no journal, , 

no abstracts in English

Oral presentation

Development of active neutron NDA system for nuclear non-proliferation and nuclear security, 3-1; Project overview and progress

Toh, Yosuke; Tsuchiya, Harufumi; Ozu, Akira; Furutaka, Kazuyoshi; Kitatani, Fumito; Komeda, Masao; Maeda, Makoto; Koizumi, Mitsuo

no journal, , 

no abstracts in English

Oral presentation

Development of a neutron resonance transmission analysis using a laser driven neutron source

Ito, Fumiaki*; Koizumi, Mitsuo; Takahashi, Toon; Suzuki, Satoshi*; Lee, J.

no journal, , 

Neutron Resonance Transmission Analysis (NRTA) is one of the active neutron NDA techniques being developed under the subsidiary for "promotion of strengthening nuclear security or the like" of MEXT. A short pulse neutron source is required to apply NRTA method to an accurate measurement of nuclear materials. A laser driven neutron source (LDNS) is considered to be such a neutron source. A study of applicability of LDNS to NRTA, and neutron detector development are in progress. The Monte Carlo simulation code PHITS was used for designing a neutron generation part, a neutron flight path, and a neutron detector system.

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