NOBORU: J-PARC BL10 for facility diagnostics and its possible extension to innovative instruments

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

doi:10.1016/j.nima.2008.11.086

Cited by 56 publications

(17 citation statements)

References 8 publications

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“…Figure 3 shows a schematic layout of setup of pulsed neutron transmission imaging experiments. The pulsed neutron transmission experiments were carried out at the neutron engineering test port "NOBORU" 9) at the BL10 neutron beam-line of MLF (Materials and Life Science Experimental Facility) at J-PARC (Japan Proton Accelerator Fig. 1 Effect of the macro-and micro-strain (including the crystallite size effect) on a Bragg-edge shape comparing with that on a diffraction peak.…”

Section: +1mentioning

confidence: 99%

Relation between Vickers Hardness and Bragg-Edge Broadening in Quenched Steel Rods Observed by Pulsed Neutron Transmission Imaging

Sato

Shiota

et al. 2015

Mater. Trans.

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The width of crystal lattice plane spacing (d-spacing) distribution related to microscopic-strain and crystallite size in a martensite phase in a 2 cm thick quenched-ferritic steel sample was quantitatively mapped in real space by a Bragg-edge broadening analysis of spectral data from a pulsed neutron transmission experiment. This analysis was performed under the condition that the instrumental resolution parameters, determined from the data of ferrite in the same sample without microscopic-strain and crystallite size effects, were unchanged over the sample area, and assuming that the d-spacing was distributed according to a Gaussian function in the martensite area. As a result, the full width at half maximum (FWHM) of the Gaussian d-spacing distribution in the martensite was extracted at each position in a sample. Consequently, it was found that the real-space distribution of the FWHM of the d-spacing distribution is closely correlated with a real-space distribution of the Vickers hardness that corresponds to the quantity of martensite. Furthermore, it was indicated that the Vickers hardness was proportional to the FWHM of the d-spacing distribution. The results suggest that it will be possible to measure the Vickers hardness in the martensite non-destructively by using the Bragg-edge neutron transmission method.

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Section: +1mentioning

confidence: 99%

Relation between Vickers Hardness and Bragg-Edge Broadening in Quenched Steel Rods Observed by Pulsed Neutron Transmission Imaging

Sato

Shiota

et al. 2015

Mater. Trans.

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“…The present experimental system was developed at Beam Line 10 (NOBORU) at J-PARC [11,12]. The accelerator at J-PARC consists of a 180-MeV linear accelerator (linac), a 3-GeV rapid-cycling proton synchrotron (RCS), and a 50-GeV proton synchrotron.…”

Section: Methodsmentioning

confidence: 99%

Development of a pulsed neutron three-dimensional imaging system using a highly sensitive image-intensifier at J-PARC

Segawa

Ooi

Kai

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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“…The data was taken in November 2009 at the Japan Spallation Neutron Source (JSNS) located at the Japan Proton Accelerator Research Facility (J-PARC) in Tokai, Japan. The measurements were carried out at NOBORU (NeutrOn Beamline for Observation and Research Use) [21], with a beam power at the time of the experiment of $ 100 kW. The prototype detector was filled with the same gas mixture as in the previous section and operated at a gas gain around 600, and a 5-cm drift cage was installed above the mPIC.…”

Section: Spatial Resolutionmentioning

confidence: 99%

Neutron imaging detector based on the μPIC micro-pixel chamber

Parker¹,

Hattori²,

Fujioka³

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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a b s t r a c tWe have developed a prototype time-resolved neutron imaging detector employing the micro-pixel chamber (mPIC), a micro-pattern gaseous detector, coupled with a field programmable gate array-based data acquisition system for applications in neutron radiography at high-intensity neutron sources. The prototype system, with an active area of 10 Â 10 cm 2 and operated at a gas pressure of 2 atm, measures both the energy deposition (via time-over-threshold) and three-dimensional track of each neutroninduced event, allowing the reconstruction of the neutron interaction point with improved accuracy.Using a simple position reconstruction algorithm, a spatial resolution of 349 7 36 mm was achieved, with further improvement expected. The detailed tracking allows strong rejection of background gamma-rays, resulting in an effective gamma sensitivity of 10 À 12 or less, coupled with stable, robust neutron identification. The detector also features a time resolution of 0:6 ms.

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NOBORU: J-PARC BL10 for facility diagnostics and its possible extension to innovative instruments

Cited by 56 publications

References 8 publications

Relation between Vickers Hardness and Bragg-Edge Broadening in Quenched Steel Rods Observed by Pulsed Neutron Transmission Imaging

Relation between Vickers Hardness and Bragg-Edge Broadening in Quenched Steel Rods Observed by Pulsed Neutron Transmission Imaging

Development of a pulsed neutron three-dimensional imaging system using a highly sensitive image-intensifier at J-PARC

Neutron imaging detector based on the μPIC micro-pixel chamber

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