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Nakajima, Kenji; Kawakita, Yukinobu; Ito, Shinichi*; Abe, Jun*; Aizawa, Kazuya; Aoki, Hiroyuki; Endo, Hitoshi*; Fujita, Masaki*; Funakoshi, Kenichi*; Gong, W.*; et al.
Quantum Beam Science (Internet), 1(3), p.9_1 - 9_59, 2017/12
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.
Hirose, Akira; Wada, Shigeru; Sasajima, Fumio; Kusunoki, Tsuyoshi; Kameyama, Iwao*; Aizawa, Ryoji*; Kikuchi, Naoyuki*
JAEA-Technology 2006-059, 122 Pages, 2007/01
JAEA-Technology-2006-059.pdf:26.03MB
It is expected that the demand for NTD-Si increases rapidly because of recent productive increase of hybrid-cars. In order to meet the demand, we have investigated the expansion technology of the NTD-Si productivity using the JRR3. This report describes the production of equipment for the external cooling device while proposed as one of the result of the investigation for the JRR-3 uniformity irradiation equipment. After an ingot was irradiated once, it is turned over manually and irradiated again in order irradiate the ingot uniformly. With the conventional equipment, it was necessary to wait the radioactivity of ingot decrease less than the permissible level with holding the ingot in the irradiation equipment. It was effective to shorten the waiting period by using an external cooling device for production increase of NTD-Si. It is expected that the productivity of NTD-Si will be increased by using the external cooling device.
Sato, Hirotaka; Shinohara, Takenao; Kiyanagi, Ryoji; Aizawa, Kazuya; Oi, Motoki; Harada, Masahide; Oikawa, Kenichi; Maekawa, Fujio; Iwase, Kenji*; Kamiyama, Takashi*; et al.
no journal, ,
Bragg edge imaging at a pulsed neutron source is a new tool to study engineering materials, which can simultaneously give crystalline structural information in a bulk specimen over wide area with good spatial resolution. In order to quantitatively deduce such information from the Bragg edge transmission spectrum at each pixel of a two-dimensional position sensitive detector, it is indispensable to analyze the shape of each Bragg edge in detail. Therefore, a comprehensive spectral analysis code "RITS" has been developed, and we have successfully demonstrated the quantitative imaging of not only crystal lattice strain but also crystallographic texture (preferred orientation) and crystallite block size. Furthermore, we are improving the code since it has not dealt with all crystal structures of 230 space groups, and not applicable to materials composed of multi crystalline phases. In the presentation, we will report the recent developments of the advanced Bragg edge imaging techniques.
