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Outlines of JAEA'S instructor training program and future prospects

日高 昭秀; 中村 和幸; 渡部 陽子; 薮内 友紀子; 新井 信義; 澤田 誠; 山下 清信; 沢井 友次; 村上 博幸

Proceedings of 23rd International Conference on Nuclear Engineering (ICONE-23) (DVD-ROM), 9 Pages, 2015/05

JAEA has conducted Instructor Training Program (ITP) to support Asian countries seeking peaceful use of nuclear energy. The program consists of (1) Instructor Training Course (ITC) in Japan, (2) Follow-up Training Course (FTC) in own countries, and (3) Nuclear Technology Seminar for bringing up nuclear trainers and leaders. The purpose of ITP is to develop a self-sustainable training system in Asian countries by disseminating the knowledge and technology in their countries. After completing ITC, the trainees are obliged to set up FTC in each country. Two or three Japanese experts join the FTC to give technical advices and support to local lecturers. The present specialized fields of ITC are (1) Reactor engineering such as reactor physics, thermal engineering and reactor safety, (2) Environmental radioactivity monitoring, and (3) Nuclear emergency preparedness. As of FY2014, ITC is applied to 8 Asian countries. Present paper summarizes the outlines, experiences and future prospects of ITP.


X-ray backscattering study of crystal lattice distortion in hidden order of URu$$_2$$Si$$_2$$

田端 千紘*; 稲見 俊哉; 道村 真司*; 横山 淳*; 日高 宏之*; 柳澤 達也*; 網塚 浩*

Philosophical Magazine, 94(32-33), p.3691 - 3701, 2014/00

 被引用回数:14 パーセンタイル:60.94(Materials Science, Multidisciplinary)

We performed synchrotron X-ray diffraction measurements on a small single crystal of URu$$_2$$Si$$_2$$. A backscattering diffraction setup (2$$thetasim179.81^circ$$) in combination with a Si(6 6 0) monochromator ensures a high instrumental resolution of $$Delta d/d sim 7.3 times 10^{-6}$$, where $$d$$ denotes a lattice-plane spacing and $$Delta d$$ is its spread expressed as the full width at half maximum (FWHM). We carefully measured the (5 5 0) Bragg peak in the temperature range between 5 and 25 K, and found it to show no signature of broadening and splitting when "Hidden Order (HO)" sets in below 17.5 K. Temperature variation of the peak position closely follows the behaviour of the known linear thermal expansion coefficient. Detailed analysis of the peak width reveals that the tetragonal fourfold rotational symmetry of URu$$_2$$Si$$_2$$ is conserved in HO within the experimental accuracy of the orthorhombicity of $$|b-a|/(b+a)leq3.0times10^{-5}$$.


Design of $$gamma$$-ray and neutron area monitoring system for the IFMIF/EVEDA accelerator building

高橋 博樹; 前原 直; 小島 敏行; 久保 隆司; 榊 泰直; 竹内 浩; 設楽 弘之; 平林 慶一*; 日高 浩介*; 執行 信寛*; et al.

Fusion Engineering and Design, 86(9-11), p.2795 - 2798, 2011/10

 被引用回数:2 パーセンタイル:19.59(Nuclear Science & Technology)

IFMIF/EVEDAの加速器実験では、ビームダンプのターゲット材として銅を採用した設計が進められており、最大9MeVの重陽子ビームが入射される計画である。このため大量の中性子が発生するとともに、ビームダンプの熱負荷除去ための水やコンクリート遮蔽材による$$gamma$$線生成が予想できる。加速器系設備では、中性子及び$$gamma$$線モニターと連携したPPSを構築する計画している。採用予定の中性子及び$$gamma$$線の検出レベルは、それぞれ0.025eV$$sim$$15MeV, 80keV$$sim$$1.5MeV領域レベルであり、現在の遮蔽設計において、これらの検出レベル以下となるような遮蔽であるかどうか検証することが安全審査のために必要不可欠である。このために9MeV重陽子イオンビーム入射による銅からの中性子角度分布のエネルギー依存性を九州大学との共同研究で取得し、この核データを用いて水及びコンクリートにおける$$gamma$$線及び中性子のエネルギー減衰についてPHITSコードを用いて解析した。


Maki parameter and upper critical field of the heavy-fermion superconductor UBe$$_{13}$$

清水 悠晴*; 池田 陽一*; 若林 琢巳*; 芳賀 芳範; 天谷 健一*; 日高 宏之*; 柳澤 達也*; 網塚 浩*

Journal of the Physical Society of Japan, 80(9), p.093701_1 - 093701_4, 2011/09

 被引用回数:7 パーセンタイル:49.07(Physics, Multidisciplinary)

Low-temperature specific heat measurements under magnetic field were performed on a single crystal UBe$$_{13}$$. The specific heat shows a $$T^3$$ behavior below $$sim$$0.7 $$T$$$$_{rm c}$$, where $$T$$$$_{rm c}$$ is the superconducting transition temperature, suggesting the existence of point nodes in the superconducting gap. Together with the isotropic behavior of the upper critical magnetic field, the symmetry of the Cooper paring is discussed.


Specific heat and magnetization studies of the superconducting mixed state of UBe$$_{13}$$

清水 悠晴*; 池田 陽一*; 若林 琢巳*; 天谷 健一*; 芳賀 芳範; 日高 宏之*; 柳澤 達也*; 網塚 浩*

Journal of the Physical Society of Japan, 80(Suppl.A), p.SA100_1 - SA100_3, 2011/07

 被引用回数:1 パーセンタイル:11.79(Physics, Multidisciplinary)

Low-temperature specific heat and static dc magnetization measurements have been performed in the superconducting state of the heavy-fermion compound UBe$$_{13}$$. The superconducting phase diagram was obtained from these measurements. We obtained Ginzburg-Landau parameter as a function of temperature and showed that a paramagnetic effect is present down to 0.5 K.


Ultrasonic measurements on the cage-structured clathrate compound U$$_3$$Pd$$_{20}$$Si$$_6$$

柳澤 達也*; 立岩 尚之; 真山 太一*; 齋藤 旬*; 日高 宏之*; 網塚 浩*; 芳賀 芳範; 根本 祐一*; 後藤 輝孝*

Journal of the Physical Society of Japan, 80(Suppl.A), p.SA105_1 - SA105_3, 2011/07

 被引用回数:3 パーセンタイル:28.84(Physics, Multidisciplinary)

Ultrasonic measurements of U$$_3$$Pd$$_{20}$$Si$$_6$$ were performed in order to investigate elastic properties of the cage-structured compound U$$_3$$Pd$$_{20}$$Si$$_6$$. At temperatures over antiferromagnetic ordering at $$T_{rm N}$$ = 19 K, neither an up-turn anomaly nor frequency dependence of the elastic constants, regarding the ultrasonic dispersion (UD), was found. A drastic change of $$C_{44}$$ mode at $$T_{rm N}$$, in particular, implies a strong magneto-elastic coupling of 5$$f$$-electrons or a possible contribution of a ferroquadrupole interaction to the antiferromagnetism in U$$_3$$Pd$$_{20}$$Si$$_6$$.


Magnetization in the superconducting mixed state of the heavy-fermion compound UBe$$_{13}$$

清水 悠晴*; 池田 陽一*; 若林 琢巳*; 天谷 健一*; 芳賀 芳範; 日高 宏之*; 柳澤 達也*; 網塚 浩*

Journal of Physics; Conference Series, 273, p.012084_1 - 012084_4, 2011/02

 被引用回数:3 パーセンタイル:65.23

Static dc magnetization measurements in the superconducting mixed state of a single crystal UBe$$_{13}$$ were performed by means of a capacitance Faraday-force method down to 0.24 K. Below the upper critical field $$B_{c2}$$, not only a peak effect but also an additional broad anomaly have been observed in magnetization curves. We report superconducting phase diagram of UBe$$_{13}$$ obtained by our magnetization measurements, including these anomalies.


Current status of VEGA program

日高 昭秀; 中村 武彦; 西野 泰治; 金澤 浩之; 橋本 和一郎; 原田 雄平; 工藤 保; 上塚 寛; 杉本 純

JAERI-Conf 99-005, p.211 - 218, 1999/07



Research program (VEGA) on the fission product release from irradiated fuel

中村 武彦; 日高 昭秀; 橋本 和一郎; 原田 雄平; 西野 泰治; 金澤 浩之; 上塚 寛; 杉本 純

JAERI-Tech 99-036, 34 Pages, 1999/03




JAEA's international contribution for nuclear human resource development

日高 昭秀; 中村 和幸; 新井 信義; 山下 清信; 村上 博幸

no journal, , 


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