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Journal Articles

Development of engineering scale extraction chromatography separation system, 2; Spray drying granulation of silica support for adsorbent

Hasegawa, Kenta; Goto, Ichiro*; Miyazaki, Yasunori; Ambai, Hiromu; Watanabe, So; Watanabe, Masayuki; Sano, Yuichi; Takeuchi, Masayuki

Proceedings of 30th International Conference on Nuclear Engineering (ICONE30) (Internet), 5 Pages, 2023/05

Journal Articles

Development of instrumentation and control systems for the ITER diagnostic systems in JADA

Yamamoto, Tsuyoshi; Hashimoto, Yasunori*; Kitazawa, Sin-iti; Yatsuka, Eiichi; Hatae, Takaki; Sugie, Tatsuo; Ogawa, Hiroaki; Takeuchi, Masaki; Kawano, Yasunori; Itami, Kiyoshi

Fusion Engineering and Design, 96-97, p.1012 - 1016, 2015/10

 Times Cited Count:4 Percentile:33.51(Nuclear Science & Technology)

Japan Domestic Agency (JADA) is responsible for six diagnostic systems in the ITER project. We have successfully developed an instrumentation and control (I&C) system for the diagnostic systems. The I&C system manages internal operations for measurement such as health checks of sensors, configuration of measurement parameters, and consistency checks between measurement parameters. We developed a conversion tool to convert operational flowcharts to EPICS records. The sequencing management function coordinates the execution of operation steps by monitoring changes in the record values. It was designed so that the relationship between the records and steps is determined automatically according to the flowcharts as much as possible. We validated the performance of the I&C system for the thermocouple measurement system, and are continuing the development of even more complex I&C systems for other JADA diagnostic systems.

Journal Articles

Development of the supervisory systems for the ITER diagnostic systems in JADA

Yamamoto, Tsuyoshi; Hashimoto, Yasunori*; Serizawa, Yasunori*; Inamoto, Shuji*; Sato, Kazuyoshi; Sugie, Tatsuo; Takeuchi, Masaki; Kawano, Yasunori

Fusion Engineering and Design, 89(5), p.532 - 535, 2014/05

 Times Cited Count:1 Percentile:8.95(Nuclear Science & Technology)

The diagnostic systems are essential for the plasma control and physics understandings. JAEA has proposed the new concept of supervisory system which manages operation sequences, current state and configuration parameters for the measurement based on our experiences in operating plasma diagnostic systems. We designed the supervisory system satisfying the requirements from both CODAC system and diagnostic systems. In our design, the tool which converts operational steps described as flowcharts into EPICS Records templates is introduced. This tool will ensure reduction of the system designers' efforts. We also designed the sequencing simulator that can submit transition commands internally instead of CODAC system for the calibration and commissioning. The mechanism which changes the limit values and consistency check algorithms in accordance with the conditions of the diagnostics system is also proposed.

Journal Articles

Characteristic heavy fermion properties in YbCu$$_2$$Si$$_2$$ and YbT$$_2$$Zn$$_{20}$$ (T: Co, Rh, Ir)

Onuki, Yoshichika; Yasui, Shinichi*; Matsushita, Masaki*; Yoshiuchi, Shingo*; Oya, Masahiro*; Hirose, Yusuke*; Dung, N. D.*; Honda, Fuminori*; Takeuchi, Tetsuya*; Settai, Rikio*; et al.

Journal of the Physical Society of Japan, 80(Suppl.A), p.SA003_1 - SA003_6, 2011/12

Journal Articles

Metamagnetic behavior in heavy-fermion compound YbIr$$_2$$Zn$$_{20}$$

Takeuchi, Tetsuya*; Yasui, Shinichi*; Toda, Masatoshi*; Matsushita, Masaki*; Yoshiuchi, Shingo*; Oya, Masahiro*; Katayama, Keisuke*; Hirose, Yusuke*; Yoshitani, Naohisa*; Honda, Fuminori*; et al.

Journal of the Physical Society of Japan, 79(6), p.064609_1 - 064609_15, 2010/06

 Times Cited Count:42 Percentile:83.77(Physics, Multidisciplinary)

Journal Articles

Magnetic and Fermi surface properties of CePd$$_5$$Al$$_2$$ and PrPd$$_5$$Al$$_2$$

Nakano, Yasunori*; Honda, Fuminori*; Takeuchi, Tetsuya*; Sugiyama, Kiyohiro*; Hagiwara, Masayuki*; Kindo, Koichi*; Yamamoto, Etsuji; Haga, Yoshinori; Settai, Rikio*; Yamagami, Hiroshi*; et al.

Journal of the Physical Society of Japan, 79(2), p.024702_1 - 024702_9, 2010/02

 Times Cited Count:15 Percentile:67.62(Physics, Multidisciplinary)

Journal Articles

Heavy fermion state in YbIr$$_2$$Zn$$_{20}$$

Yoshiuchi, Shingo*; Toda, Masatoshi*; Matsushita, Masaki*; Yasui, Shinichi*; Hirose, Yusuke*; Oya, Masahiro*; Katayama, Keisuke*; Honda, Fuminori*; Sugiyama, Kiyohiro*; Hagiwara, Masayuki*; et al.

Journal of the Physical Society of Japan, 78(12), p.123711_1 - 123711_4, 2009/12

 Times Cited Count:39 Percentile:82.82(Physics, Multidisciplinary)

Journal Articles

Pressure-induced superconductivity in antiferromagnet CePd$$_5$$Al$$_2$$

Honda, Fuminori*; M$'e$asson, M.-A.*; Nakano, Yasunori*; Yoshitani, Naohisa*; Yamamoto, Etsuji; Haga, Yoshinori; Takeuchi, Tetsuya*; Yamagami, Hiroshi*; Shimizu, Katsuya*; Settai, Rikio*; et al.

Journal of the Physical Society of Japan, 77(4), p.043701_1 - 043701_4, 2008/04

 Times Cited Count:37 Percentile:81.74(Physics, Multidisciplinary)

Journal Articles

Current status of the control system for J-PARC accelerator complex

Yoshikawa, Hiroshi; Sakaki, Hironao; Sako, Hiroyuki; Takahashi, Hiroki; Shen, G.; Kato, Yuko; Ito, Yuichi; Ikeda, Hiroshi*; Ishiyama, Tatsuya*; Tsuchiya, Hitoshi*; et al.

Proceedings of International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS '07) (CD-ROM), p.62 - 64, 2007/10

J-PARC is a large scale facility of the proton accelerators for the multi-purpose of scientific researches in Japan. This facility consists of three accelerators and three experimental stations. Now, J-PARC is under construction, and LINAC is operated for one year, 3GeV synchrotron has just started the commissioning in this October the 1st. The completion of this facility will be next summer. The control system of accelerators established fundamental performance for the initial commissioning. The most important requirement to the control system of this facility is to minimize the activation of accelerator devices. In this paper, we show that the performances of each layer of this control system have been achieved in the initial stage.

Journal Articles

Personnel protection system in J-PARC linac

Hiroki, Fumio; Yoshikawa, Hiroshi; Takeuchi, Yasunori*; Kudo, Kikuo*

Proceedings of 1st Annual Meeting of Particle Accelerator Society of Japan and 29th Linear Accelerator Meeting in Japan, p.159 - 161, 2004/08

The main purpose of Personnel Protection System (PPS) is to protect people from radiation exposure. From the viewpoint of it, important features of the Japan Proton Accelerator Research Complex (J-PARC) are (1) the beam power as high as 1MW, and (2) a lot of beam-line entrances apart from the main control room. The first feature requires the beam interlock function of PPS to be more reliable than ever. The second one is dealt with the access control function of PPS, with which the remote access control from the central control room is enabled. In this paper, we report the beam interlock and access control functions of the PPS.

JAEA Reports

Absolute calibration of the neutron yield measurement on JT-60 Upgrade

Nishitani, Takeo; Takeuchi, Hiroshi; Barnes, C. W.*; Iguchi, Tetsuo*; Nagashima, Akira; Kondoh, Takashi; Sakasai, Akira; Itami, Kiyoshi; Tobita, Kenji; Nagashima, Keisuke; et al.

JAERI-M 91-176, 23 Pages, 1991/10

JAERI-M-91-176.pdf:1.08MB

no abstracts in English

Journal Articles

Impurity behavior

Sugie, Tatsuo; Kubo, Hirotaka; Sakasai, Akira; Koide, Yoshihiko; Hirayama, Toshio; Shimada, Michiya; Itami, Kiyoshi; Kawano, Yasunori; Nishitani, Takeo; Nagashima, Keisuke; et al.

Kaku Yugo Kenkyu, 65(SPECIAL ISSUE), p.287 - 306, 1991/03

no abstracts in English

Journal Articles

Behavior of light impurity in beam-heated JT-60 plasmas with graphite walls

Kubo, Hirotaka; Sugie, Tatsuo; *; Sakasai, Akira; Koide, Yoshihiko; Akaoka, Nobuo*; Nishitani, Takeo; Itami, Kiyoshi; Kawano, Yasunori; Nagashima, Keisuke; et al.

IAEA-TECDOC-536, p.139 - 144, 1990/00

no abstracts in English

Journal Articles

Measurements of neutral beam stopping for hydrogen and helium in JT-60 plasma

Tobita, Kenji; Ito, Takao; Sakasai, Akira; Kusama, Yoshinori; Ohara, Yoshihiro; Tsukahara, Yoshimitsu; Nemoto, Masahiro; Kawano, Yasunori; Kubo, Hirotaka; Takeuchi, Hiroshi; et al.

Plasma Physics and Controlled Fusion, 32(6), p.429 - 441, 1990/00

 Times Cited Count:14 Percentile:49.18(Physics, Fluids & Plasmas)

no abstracts in English

Oral presentation

Radiation safety aspects in J-PARC facility

Shibata, Tokushi; Nakashima, Hiroshi; Nakane, Yoshihiro; Masukawa, Fumihiro; Matsuda, Norihiro; Miura, Taichi*; Numajiri, Masaharu*; Suzuki, Takenori*; Takeuchi, Yasunori*

no journal, , 

J-PARC (Japan Proton Accelerator Research Complex) consists of a 400 MeV LINAC, a 3 GeV synchrotron, a 50 GeV synchrotron and three experimental halls for material and life science, hadron physics and neutrino physics. The radiation safety design for J-PARC is based on calculations on radiation outside the shielding, on the boundary of the controlled area and on the cite boundary. In order to study the accuracy of different methods and make clear the differences among different methods, some benchmark analyses on beam dump, bulk shielding, streaming and activation experiments were carried out. The activation of air, cooling water and the activation of soil and its effect to underground water have been also estimated. Since J-PARC is a complex accelerator facility, an interlock system is important for radiation safety. To prevent unintended radiation exposure, a carefully designed system was incorporated.

Oral presentation

Progress in ITER diagnostics development in Japan

Kusama, Yoshinori; Kondoh, Takashi; Ishikawa, Masao; Hatae, Takaki; Yatsuka, Eiichi; Hayashi, Toshimitsu; Ono, Takehiro; Kawano, Yasunori; Imazawa, Ryota; Ogawa, Hiroaki; et al.

no journal, , 

no abstracts in English

Oral presentation

Progress in ITER diagnostics development in Japan

Kawano, Yasunori; Kondoh, Takashi; Ishikawa, Masao; Hatae, Takaki; Yatsuka, Eiichi; Imazawa, Ryota; Ogawa, Hiroaki; Sugie, Tatsuo; Takeuchi, Masaki; Sato, Kazuyoshi; et al.

no journal, , 

Recent progress in development of ITER diagnostic systems in Japan is presented as briefly shown below. (1) Microfission Chamber: A prototyping of vacuum feedthrough showed that the vacuum leak rate satisfies that of ITER requirement. (2) Thomson scattering (edge): A new method proposed for the measurement of anisotropic electron temperature was presented. (3) Poloidal Polarimeter: Measurement accuracy of the poloidal polarimeter was evaluated so that the accuracy of resultant current profile can satisfy the ITER measurement requirement. (4) Impurity influx monitor (divertor): By improvement of the design of equatorial port optics, expected detected light was 16 times increased in comparison with that of the previous design. (5) Divertor thermocouples (outer target): Investigation was started about the fixation method of the thermocouple on the side of divertor outer target. (6) Divertor IR thermography: Conceptual design activity was started for equatorial port optics.

Oral presentation

Progress in ITER diagnostics development in Japan

Kawano, Yasunori; Hatae, Takaki; Yatsuka, Eiichi; Sugie, Tatsuo; Takeuchi, Masaki; Ogawa, Hiroaki; Imazawa, Ryota; Ono, Takehiro; Kondoh, Takashi; Ishikawa, Masao; et al.

no journal, , 

no abstracts in English

Oral presentation

Neutronic analysis for iter diagnostics procured by Japan Domestic Agency

Ishikawa, Masao; Shimada, Takahiko; Takeuchi, Masaki; Imazawa, Ryota; Yatsuka, Eiichi; Ogawa, Hiroaki; Hatae, Takaki; Sugie, Tatsuo; Kawano, Yasunori; Kondoh, Takashi; et al.

no journal, , 

The results of neuronic analysis to design ITER diagnostics (Poloidal Polarimeter, Edge Thomson Scattering System, Divertor Impurity Flux Monitor and IR Thermography) procured by Japan Domestic Agency are reported. Nuclear heating of plasma facing mirrors of those diagnostics is evaluated $$sim$$1 w/cc during ITER operation. Dependence of nuclear heating of the mirrors on the aperture size of beam line, that is the effect of radiation shield, is also estimated. Thermal analysis is performed based on the results of those nuclear analysis and then cooling system of mirror is being developed.

Oral presentation

Progress of diagnostics development in JAEA

Kawano, Yasunori; Sugie, Tatsuo; Ogawa, Hiroaki; Tojo, Hiroshi; Yatsuka, Eiichi; Imazawa, Ryota; Hatae, Takaki; Hamano, Takashi; Sakuma, Takeshi; Takeuchi, Masaki; et al.

no journal, , 

no abstracts in English

52 (Records 1-20 displayed on this page)