Final design of the Energy-Resolved Neutron Imaging System “RADEN” at J-PARC

Shinohara, T.; Kai, Takeshi; Oikawa, Kenichi; Segawa, M.; Harada, Masahide; Nakatani, Takeshi; Ooi, Motoki; Aizawa, Katsuo; Sato, Hirotaka; Kamiyama, Takashi; Yokota, Hideo; Sera, Toshihiro; Mochiki, Koh-ichi; Kiyanagi, Yoshiaki

doi:10.1088/1742-6596/746/1/012007

Cited by 71 publications

(55 citation statements)

References 10 publications

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“…The collimator ratio L/D was 2400 (the beam angular divergence was 0.4 mrad) because the size of B 4 C slit at the 7 m position was 3 mm × 3 mm. The used neutron TOF-imaging detector was the nGEM detector used in J-PARC MLF BL22 "RADEN" [57] which is the first pulsed neutron imaging instrument in the world. The detector had the pixel size of 800 µm and the detection area of 10.24 cm × 10.24 cm.…”

Section: Imaging Resultsmentioning

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%

“…The construction projects of wavelength-resolved neutron imaging instruments at intense pulsed spallation neutron sources, J-PARC MLF BL22 "RADEN" [57], RAL ISIS-TS2 "IMAT" [58] and ESS "ODIN" [59], are going. At such world-leading facilities, higher level experiments will be performed than the experiments presented in this paper.…”

Section: Discussionmentioning

confidence: 99%

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

Sato

2017

J. Imaging

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“…To realize such potential there is still a lot of room for improvements and developments pushing the current limitations. For grating-based methods this is mainly done at conventional continuous source imaging instruments [17,37,46,[59][60][61], but finds its way also to pulsed sources like JPARC and ISIS with a view on their pioneering dedicated ToF imaging instrumentation [62][63][64][65][66]. The spin-echo technique has so far been explored at test beamlines in Berlin [55] and Delft [34], but also here capabilities become available at the named spallation sources.…”

Section: Discussionmentioning

confidence: 99%

Small Angle Scattering in Neutron Imaging—A Review

et al. 2017

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Abstract:Conventional neutron imaging utilizes the beam attenuation caused by scattering and absorption through the materials constituting an object in order to investigate its macroscopic inner structure. Small angle scattering has basically no impact on such images under the geometrical conditions applied. Nevertheless, in recent years different experimental methods have been developed in neutron imaging, which enable to not only generate contrast based on neutrons scattered to very small angles, but to map and quantify small angle scattering with the spatial resolution of neutron imaging. This enables neutron imaging to access length scales which are not directly resolved in real space and to investigate bulk structures and processes spanning multiple length scales from centimeters to tens of nanometers.

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“…2 shows the optical layout utilized in this study. The RC specimen mounted on the loading device, composed of a hydraulic jack and a load cell, was set up on a sample stage of BL22, RADEN [6], in the Materials and Life Science Experimental Facility (MLF) of the Japan Proton Accelerator Research Complex (J-PARC). RADEN is a next generation pulsed-neutron instrument, energyresolved neutron imaging facility.…”

Section: Methodsmentioning

confidence: 99%

Deformation Analysis of Reinforced Concrete using Neutron Imaging Technique

2018

Materials Research Proceedings

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Final design of the Energy-Resolved Neutron Imaging System “RADEN” at J-PARC

Cited by 71 publications

References 10 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

Small Angle Scattering in Neutron Imaging—A Review

Deformation Analysis of Reinforced Concrete using Neutron Imaging Technique

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