Design and application of NOBORU—NeutrOn Beam line for Observation and Research Use at J-PARC

Oikawa, Kenichi; Maekawa, Fujio; Harada, Masahide; Kai, Tetsuya; Meigo, Shin-ichiro; Kasugai, Yoshimi; Ooi, Motoki; Sakai, Kenji; Teshigawara, Makoto; Hasegawa, Shoichi; Futakawa, Masatoshi; Ikeda, Yujiro; Watanabe, Noboru

doi:10.1016/j.nima.2008.02.019

Cited by 81 publications

(36 citation statements)

References 12 publications

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“…The experiment was performed at J-PARC MLF BL10 "NOBORU" [33] connected to decoupled-type 20 K supercritical para-H 2 moderator. The accelerator power of the proton synchrotron was 120 kW during this experiment.…”

Section: Imaging Resultsmentioning

confidence: 99%

“…The weight n of Equation (29) was set in 16. The experiment was performed at J-PARC MLF BL10 "NOBORU" [33]. The power of the 3 GeV proton synchrotron of J-PARC was 300 kW during the experiment.…”

Section: Tomographic Imaging Resultsmentioning

confidence: 99%

“…The single-crystal sample was 3.4wt% Sisteel plate of 5 mm thickness and was measured at a pulsed cold-neutron beam-line, BL10 "NOBORU" [33] of the Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC). The cold neutron wavelength resolution was about 0.35% and the beam angular divergence was about 416 μrad (the collimator ratio (L/D) was about 2400).…”

Section: Bragg-dip Pattern Analysis Methodsmentioning

confidence: 99%

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Deriving Quantitative Crystallographic Information from the Wavelength-Resolved Neutron Transmission Analysis Performed in Imaging Mode

Sato

2017

J. Imaging

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Current status of Bragg-edge/dip neutron transmission analysis/imaging methods is presented. The method can visualize real-space distributions of bulk crystallographic information in a crystalline material over a large area (~10 cm) with high spatial resolution (~100 µm). Furthermore, by using suitable spectrum analysis methods for wavelength-dependent neutron transmission data, quantitative visualization of the crystallographic information can be achieved. For example, crystallographic texture imaging, crystallite size imaging and crystalline phase imaging with texture/extinction corrections are carried out by the Rietveld-type (wide wavelength bandwidth) profile fitting analysis code, RITS (Rietveld Imaging of Transmission Spectra). By using the single Bragg-edge analysis mode of RITS, evaluations of crystal lattice plane spacing (d-spacing) relating to macro-strain and d-spacing distribution's FWHM (full width at half maximum) relating to micro-strain can be achieved. Macro-strain tomography is performed by a new conceptual CT (computed tomography) image reconstruction algorithm, the tensor CT method. Crystalline grains and their orientations are visualized by a fast determination method of grain orientation for Bragg-dip neutron transmission spectrum. In this paper, these imaging examples with the spectrum analysis methods and the reliabilities evaluated by optical/electron microscope and X-ray/neutron diffraction, are presented. In addition, the status at compact accelerator driven pulsed neutron sources is also presented.

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Section: Imaging Resultsmentioning

confidence: 99%

Section: Tomographic Imaging Resultsmentioning

confidence: 99%

Section: Bragg-dip Pattern Analysis Methodsmentioning

confidence: 99%

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Deriving Quantitative Crystallographic Information from the Wavelength-Resolved Neutron Transmission Analysis Performed in Imaging Mode

Sato

2017

J. Imaging

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“…NOBORU was constructed at BL10 in MLF at J-PARC in 2007 by the neutron source group [36]. The primary mission of NOBORU is facility diagnostics to study neutronics performance of the neutron source at MLF [119].…”

Section: Instrument Descriptionmentioning

confidence: 99%

Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex II: Neutron Scattering Instruments

Nakajima

Kawakita

Itoh

et al. 2017

QuBS

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Abstract:The neutron instruments suite, installed at the spallation neutron source of the Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC), is reviewed. MLF has 23 neutron beam ports and 21 instruments are in operation for user programs or are under commissioning. A unique and challenging instrumental suite in MLF has been realized via combination of a high-performance neutron source, optimized for neutron scattering, and unique instruments using cutting-edge technologies. All instruments are/will serve in world-leading investigations in a broad range of fields, from fundamental physics to industrial applications. In this review, overviews, characteristic features, and typical applications of the individual instruments are mentioned.

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“…2 shows a schematic of the layout of the pulsed neutron transmission imaging experiment. The experiment was performed on the Neutron Beamline for Observation and Research Use (NOBORU) (Oikawa et al, 2008) on BL10 of the Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC). NOBORU views the decoupled-type 20 K supercritical 100%-para-H 2 moderator of the Japan Spallation Neutron Source (JSNS) driven by a 3 GeV proton synchrotron.…”

Section: Introductionmentioning

confidence: 99%

Inverse pole figure mapping of bulk crystalline grains in a polycrystalline steel plate by pulsed neutron Bragg-dip transmission imaging

et al. 2017

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A new mapping procedure for polycrystals using neutron Bragg-dip transmission is presented. This is expected to be useful as a new materials characterization tool which can simultaneously map the crystallographic direction of grains parallel to the incident beam. The method potentially has a higher spatial resolution than neutron diffraction imaging. As a demonstration, a Bragg-dip neutron transmission experiment was conducted at J-PARC on beamline MLF BL10 NOBORU. A large-grained Si-steel plate was used. Since this specimen included multiple grains along the neutron beam transmission path, it was a challenging task for existing methods to analyse the direction of the crystal lattice of each grain. A new data-analysis method for Bragg-dip transmission measurements was developed based on database matching. As a result, the number of grains and their crystallographic direction along the neutron transmission path have been determined.

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Design and application of NOBORU—NeutrOn Beam line for Observation and Research Use at J-PARC

Cited by 81 publications

References 12 publications

Deriving Quantitative Crystallographic Information from the Wavelength-Resolved Neutron Transmission Analysis Performed in Imaging Mode

Deriving Quantitative Crystallographic Information from the Wavelength-Resolved Neutron Transmission Analysis Performed in Imaging Mode

Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex II: Neutron Scattering Instruments

Inverse pole figure mapping of bulk crystalline grains in a polycrystalline steel plate by pulsed neutron Bragg-dip transmission imaging

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