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Hattori, Takanori; Suzuki, Koji*; Miyo, Tatsuya*; Ito, Takayoshi*; Machida, Shinichi*
Nuclear Instruments and Methods in Physics Research A, 1059, p.168956_1 - 168956_9, 2024/02
Times Cited Count：0 Percentile：0.02(Instruments & Instrumentation)Radial collimators (RC) with a 0.5 mm gauge size (GS) were specially designed for high-pressure neutron diffraction experiments and their performance and efficacy were investigated. The RCs with nominal GS of 0.75 mm, 1.5 mm, and 3.0 mm effectively exhibited GS of 0.50 mm, 1.07 mm, and 2.78 mm, respectively. The transmissions of all three RCs were almost equivalent. The assessment using a P-E press and a DAC revealed that the anvil scattering was considerably minimized and the sample-to-anvil signal ratio reached values of 0.5 and 2.0 for the PE press and DAC, respectively, when using the 0.5 mm-GS RCs. These results indicate that the 0.5mm-GS RCs have been fabricated as intended and exhibit efficacy for the high-pressure-neutron diffraction experiments, specifically those exceeding 30 GPa. Among those ever manufactured for neutron scattering experiments, the RCs display the smallest GS.
Shiba, Tomooki; Kaburagi, Masaaki; Nomi, Takayoshi; Suzuki, Risa; Kosuge, Yoshihiro*; Nauchi, Yasushi*; Takada, Akira*; Nagatani, Taketeru; Okumura, Keisuke
Proceedings of International Topical Workshop on Fukushima Decommissioning Research (FDR2022) (Internet), 3 Pages, 2022/10
Nauchi, Yasushi*; Nomi, Takayoshi; Suzuki, Risa; Kosuge, Yoshihiro*; Shiba, Tomooki; Takada, Akira*; Kaburagi, Masaaki; Okumura, Keisuke
Proceedings of International Topical Workshop on Fukushima Decommissioning Research (FDR2022) (Internet), 4 Pages, 2022/10
Xu, P. G.; Harjo, S.; Ojima, Mayumi*; Suzuki, Hiroshi; Ito, Takayoshi*; Gong, W.; Vogel, S. C.*; Inoue, Junya*; Tomota, Yo*; Aizawa, Kazuya; et al.
Journal of Applied Crystallography, 51(3), p.746 - 760, 2018/06
Times Cited Count：25 Percentile：90.58(Chemistry, Multidisciplinary)Inamura, Yasuhiro; Ito, Takayoshi*; Suzuki, Jiro*
Journal of Physics; Conference Series, 1021(1), p.012015_1 - 012015_5, 2018/06
Times Cited Count：2 Percentile：80.71(Nuclear Science & Technology)An event recording method for data acquisition for neutron scattering and its analysis provides a lot of benefits for the measurement of time-resolved and time transient phenomena. Almost all instruments installed in the Materials and Life Science Experimental Facility (MLF) at J-PARC have adopted this method since the first beam came and have achieved good results. On the other hand, our treatment of event recorded data leaves room for improvements and developments to achieve more effective utilization. This paper introduces one of the applications of the event recording method to achieve the pseudo real-time data treatment in MLF in a simple way.
Sakasai, Kaoru; Sato, Setsuo*; Seya, Tomohiro*; Nakamura, Tatsuya; To, Kentaro; Yamagishi, Hideshi*; Soyama, Kazuhiko; Yamazaki, Dai; Maruyama, Ryuji; Oku, Takayuki; et al.
Quantum Beam Science (Internet), 1(2), p.10_1 - 10_35, 2017/09
Neutron devices such as neutron detectors, optical devices including supermirror devices and 
He neutron spin filters, and choppers are successfully developed and installed at the Materials Life Science Facility (MLF) of the Japan Proton Accelerator Research Complex (J-PARC), Tokai, Japan. Four software components of MLF computational environment, instrument control, data acquisition, data analysis, and a database, have been developed and equipped at MLF. MLF also provides a wide variety of sample environment options including high and low temperatures, high magnetic fields, and high pressures. This paper describes the current status of neutron devices, computational and sample environments at MLF.
Inamura, Yasuhiro; Ito, Takayoshi*; Suzuki, Jiro*; Nakatani, Takeshi
JAEA-Testing 2016-001, 91 Pages, 2016/06
JAEA-Testing-2016-001.pdf:2.38MB
Manyo Library is a software framework for developing analysis software of neutron scattering data produced at MLF, J-PARC. This software framework is required to work on many instruments in MLF and to include base functions applied to various scientific purposes at beam lines. This framework mainly consists of data containers, which enable to store 1, 2 and 3 dimensional axes data for neutron scattering. Data containers have many functions to calculate four arithmetic operations with errors distribution between containers, to store the meta-data about measurements and to read or write text file. Since Manyo Library is built in C++ language, we' ve introduced the technology to call C++ function from Python environment into the framework. As results, we have already developed a lot of software for data reduction, analysis and visualization, which are utilized widely in beam lines at MLF. This document is the manual for the beginner to touch this framework.
Xu, P. G.; Harjo, S.; Ito, Takayoshi*; Morii, Yukio*; Gong, W.; Suzuki, Hiroshi; Akita, Koichi; Suzuki, Tetsuya*; Tomota, Yo; Lutterotti, L.*
JPS Conference Proceedings (Internet), 8, p.031022_1 - 031022_6, 2015/09
Takeda, Masayasu; Yamazaki, Dai; Soyama, Kazuhiko; Maruyama, Ryuji; Hayashida, Hirotoshi; Asaoka, Hidehito; Yamazaki, Tatsuya; Kubota, Masato; Aizawa, Kazuya; Arai, Masatoshi; et al.
Chinese Journal of Physics, 50(2), p.161 - 170, 2012/04
Sn cable-in-conduit conductorsHemmi, Tsutomu; Harjo, S.; Ito, Takayoshi; Matsui, Kunihiro; Nunoya, Yoshihiko; Koizumi, Norikiyo; Takahashi, Yoshikazu; Nakajima, Hideo; Aizawa, Kazuya; Suzuki, Hiroshi; et al.
IEEE Transactions on Applied Superconductivity, 21(3), p.2028 - 2031, 2011/06
Times Cited Count：10 Percentile：49.97(Engineering, Electrical & Electronic)Residual strain in conductors is caused by the difference in the coefficient of expansion between NbSn strands and the jacket over a temperature range of 5 - 923 K. The superconducting properties of strands vary significantly, depending on the strain. It is important to clarify the residual strain as part of the evaluation of superconducting performance. However, the residual strain of strands in the conductor has not been measured so far because of their complicated configuration and their location in a jacket. The engineering materials diffractometer "Takumi" in J-PARC can measure residual strain with a relative accuracy of around 0.02%, using neutron diffraction. In this study, the Takumi was applied to the measurement of residual strain in strands for the ITER TF conductor. Results indicate that the residual strain of strands in the conductor can be determined, thereby clarifying the mechanism of residual strain and its relationship to superconducting performance.
neutron diffractionXu, P. G.; Harjo, S.; Ito, Takayoshi; Suzuki, Hiroshi; Akita, Koichi; Li, J.*; Tomota, Yo*
Zairyo To Purosesu (CD-ROM), 24, p.547 - 549, 2011/03
Suzuki, Takayoshi*
JAERI-Review 2005-042, 38 Pages, 2005/09
JAERI-Review-2005-042.pdf:3.13MB
After the Basic Plan on Energy was determined, a set of policy measures as proposed in order to accelerate a shift to natural gas: development of domestic infrastructure of natural gas utilization, making effort to lower and stabilize import prices of LNG, support for introducing gas cogeneration, etc. Also the Program to Achieve Kyoto-Protocol Target proposes to promote the natural gas shift. In these circumstances, this report summarizes the results of investigation on natural gas resources, LNG import, domestic infrastructure of natural gas utilization, current and future prices of natural gas, the development of natural gas utilization technologies, and new types of fuel for end-use. Natural gas is expected more abundant than petroleum, therefore Japan has increased its import. In addition, its prices might be lower in the future in comparison with petroleum prices. Natural gas will take more important role as a primary energy source in Japan under the support program by the Government.
Suzuki, Takayoshi*
JAERI-Review 2005-030, 37 Pages, 2005/08
JAERI-Review-2005-030.pdf:2.28MB
Although energy consumption in the industry sector has almost been stable, energy consumption in the transportation (passenger and freight) sector has increased after the oil crisis. The increase of energy consumption in passenger sector can be attributed to the increase in transportation by private passenger vehicles; while the increase in freight sector was due to the modal shift to trucks. Among transportation methods, automobiles are now dominant in terms of energy consumption and also in terms of amount of transportation. Therefore implementing energy conservation measures relating to automobiles is very important in order to suppress the energy consumption in transportation. This report summarizes the results of investigation on energy conservation measures, especially relevant to automobiles. The investigation has shown that most promising and effective technologies or measures are promoting market penetration of vehicles satisfying "top runner standard", development and employment of hybrid vehicles, and introduction of vehicles with "idling-stop" systems.
Suzuki, Takayoshi*
JAERI-Review 2005-022, 37 Pages, 2005/06
JAERI-Review-2005-022.pdf:2.12MB
Energy consumption in the residential and commercial sector has increased substantially after the oil crisis, although energy consumption in the industry sector has been almost stable, and is expected to increase further with continued change of lifestyle seeking more convenience and comfort. This report summarizes the results of investigation on energy consumption, energy efficiency, prices etc. of energy intensive devices such as electric refrigerator, air conditioner, stove and gas table used in the residential and commercial sector. Also investigated are new promising technologies or systems under development. The efficiency of some technologies, e.g. electric refrigerator, has improved remarkably, and new technologies such as heat pump water heating systems and small capacity residential cogeneration systems are recently developed.
Suzuki, Takayoshi*
JAERI-Review 2005-007, 60 Pages, 2005/03
JAERI-Review-2005-007.pdf:4.5MB
Energy consumption in the industry sector, which is larger than that of the residential/commercial or transportation sector, occupies nearly 50% of final energy consumption in Japan. The industry sector has made an effort for energy conservation from an economical point of view. Now further effort is required also to cope with a global warning problem. This report summarizes the results of investigation on energy consumption, changes in energy intensity and development of energy conservation technologies including those common to the industries and recycling of wastes, focusing on energy intensive industries such as iron & steel and chemicals. Advanced energy conservation technologies or systems are being developed with a large and continuous effort in all industris, and recycling of wastes, e.g. waste plastics, has started in industry scale.
Suzuki, Masayuki; Daido, Hiroyuki; Choi, I. W.*; Yu, W.*; Nagai, Keiji*; Norimatsu, Takayoshi*; Mima, Kunioki*; Fiedorowicz, H.*
Physics of Plasmas, 10(1), p.227 - 233, 2003/01
Times Cited Count：18 Percentile：50.18(Physics, Fluids & Plasmas)no abstracts in English
Suzuki, Masayuki; Yamagami, Susumu; Nagai, Keiji*; Norimatsu, Takayoshi*; Mima, Kunioki*; Murakami, Yoichi*; Nakayama, Takeyoshi*; Yu, W.*; Fiedorowicz, H.*; Choi, I. W.*; et al.
Proceedings of 2nd International Conference on Inertial Fusion Sciences and Applications (IFSA 2001), p.1252 - 1255, 2001/00
no abstracts in English
Abe, Hiroshi; ; *; *; *; *; Kaneta, Takayoshi*; *; Suzuki, Hiromitsu; Tani, Norio; et al.
JAERI-Research 97-068, 51 Pages, 1997/10
JAERI-Research-97-068.pdf:1.78MB
no abstracts in English
Makino, Takayoshi; Okita, Takatoshi; Kato, Akebumi*; Suzuki, Yuichiro*; Minakawa, Susumu; Kashimura, Motoaki
no journal, ,
no abstracts in English
Kato, Yoshiyuki; Kimura, Yuichi; Isomae, Hidemi; Kurita, Tsutomu; Yoshimoto, Katsunobu; Makino, Takayoshi; Suzuki, Masahiro; Kihara, Yoshiyuki
no journal, ,
no abstracts in English
