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Sakata, Shinya; Yamaguchi, Taiji; Sugimura, Toru; Kominato, Toshiharu; Kawamata, Yoichi; Totsuka, Toshiyuki; Sato, Minoru; Sueoka, Michiharu; Naito, Osamu
Fusion Science and Technology, 60(2), p.496 - 500, 2011/08
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)For a steady state operation of JT-60SA, a plasma feedback control using various diagnostic sensor signals plays an essential role. To realize this, Real Time Diagnostic Signals acquisition System, RTDS, which utilizes PC-based real-time OS "INtime", has been under consideration toward JT-60SA project. Moreover, long-time experiments more than 100 seconds will be planned in JT-60SA project. Therefore, real time monitoring will be required as an essential function that displays acquired diagnostic signals on real time during long-time experiment. This function will be also realized by utilizing RTDS.
Kawamata, Yoichi; Sugimura, Toru; Yamaguchi, Taiji; Sueoka, Michiharu; Sakata, Shinya; Totsuka, Toshiyuki; Sato, Minoru; Kominato, Toshiharu; Naito, Osamu
Fusion Science and Technology, 60(2), p.491 - 495, 2011/08
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)Totsuka, Toshiyuki; Sakata, Shinya
JAEA-Technology 2009-006, 36 Pages, 2009/05
JAEA-Technology-2009-006.pdf:8.42MB
The functions of JT-60 discharge control computer system and the data processing computer system will be integrated into a new JT-60SA supervisory control system to improve the operational efficiency of the JT-60 control computer system. In this report, we first show the necessary requirements for the new JT-60SA supervisory control system that should have high cost performance and maintenability. Next, overall system image of the new JT-60SA supervisory control system is presented and the necessary functions and the issues to be solved in the development are shown. Finally, the necessary manpower for this development and performance of the computer hardware, and the expected reduction of maintenance cost of the computer system are described.
Totsuka, Toshiyuki; Suzuki, Yoshio; Sakata, Shinya; Oshima, Takayuki; Iba, Katsuyuki*
Fusion Engineering and Design, 83(2-3), p.287 - 290, 2008/04
Times Cited Count：1 Percentile：10.05(Nuclear Science & Technology)no abstracts in English
Kawamata, Yoichi; Naito, Osamu; Kiyono, Kimihiro; Itami, Kiyoshi; Totsuka, Toshiyuki; Akasaka, Hiromi; Sueoka, Michiharu; Sato, Tomoki; Oshima, Takayuki; Sakata, Shinya; et al.
Fusion Engineering and Design, 83(2-3), p.198 - 201, 2008/04
Times Cited Count：3 Percentile：23.55(Nuclear Science & Technology)The design activity of JT-60SA (JT-60 Super Advanced) which is remodeled to a superconducting tokamak device has been starting under the JA-EU collaborative ITER-BA project. For the JT-60SA control system, the existing system should be reused as much as possible from the viewpoint of cost-effectiveness. We have just begun to discuss the configuration of the advanced Supervisory Control System (SVCS) including the following systems: (1) ultimately flexible real-time control system, (2) precise timing system enough to clarify cause and effect, and (3) safety shutdown control system. In this report, we present the design study of the JT-60SA SVCS with focusing on these systems.
Iba, Katsuyuki*; Ozeki, Takahisa; Totsuka, Toshiyuki; Suzuki, Yoshio; Oshima, Takayuki; Sakata, Shinya; Sato, Minoru; Suzuki, Mitsuhiro; Hamamatsu, Kiyotaka; Kiyono, Kimihiro
Fusion Engineering and Design, 83(2-3), p.495 - 497, 2008/04
Times Cited Count：4 Percentile：29.49(Nuclear Science & Technology)Fusion research grid is an environment of collaborative researches using a network that connects scientists far apart and let them collaborate effectively over the difference in time and distance in a nuclear fusion research. Fundamental technology of Fusion research grid has been developed at JAEA in the VizGrid project under the e-Japan project at Ministry of Education, Culture, Sports, Science and Technology (MEXT). Remote research environments of experiments, diagnostics, analyses and communications were developed on Fusion research grid. We have developed prototype systems that include a remote experiment system, a remote diagnostics system, and a remote analysis system. All users can access these systems from anywhere because Fusion research grid does not required closed network like Super SINet to maintain security. The prototype systems were verified in experiments at JT-60U and their availability was confirmed.
Oshima, Takayuki; Kiyono, Kimihiro; Sakata, Shinya; Sato, Minoru; Totsuka, Toshiyuki; Iba, Katsuyuki*; Ozeki, Takahisa; Hirayama, Toshio
Fusion Engineering and Design, 82(5-14), p.1210 - 1215, 2007/10
Times Cited Count：2 Percentile：18.73(Nuclear Science & Technology)In JT-60U the data processing system, providing the data acquisition, producing the diagnostic data base, and communicating with the JT-60U control system. The MSP-ISP was replaced by a new Inter-Shot Processor based on the UNIX-OS of a workstation (UNIX-ISP) in 2005. The performance of UNIX-ISP is 2 times as high as that of the MSP-ISP in a stand-alone test using the data conversion program of the CXRS data. Thus we can expect the reduction of the processing time by the optimization of the total sequence. For the remote experiment, we have developed a system called RMSVR with which we can set discharge parameters from the remote site, and thereby the consistency of input parameters is checked. The high security of the remote experiment system is established by the certification and the encrypted communication based on ITBL. A verification test between a university and JAEA Naka indicates that the system using the HTTPS protocol is suitable for the remote experiment.
Fukamoto, Kana; Shirai, Koji*; Sakata, Toshiyuki*; Sakashita, Tetsuya; Funayama, Tomoo; Hamada, Nobuyuki*; Wada, Seiichi*; Kakizaki, Takehiko; Shimura, Sachiko*; Kobayashi, Yasuhiko; et al.
Journal of Radiation Research, 48(3), p.247 - 253, 2007/05
Times Cited Count：17 Percentile：47.8(Biology)To carry out the radio-microsurgery study using silkworm, 
, we have already developed the specific irradiation systems for eggs and third to fifth instar larvae. In this study, a modified application consisting of the first instar silkworm larvae was further developed using heavy-ion microbeams. This system includes aluminum plates with holes specially designed to fix the first instar silkworm larvae during irradiation, and Mylar films were used to adjust energy deposited for planning radiation doses at certain depth. Using this system, the suppression of abnormal proliferation of epidermal cells in the knob mutant was examined. Following target irradiation of the knob-forming region at the first instar stage with 180-mum-diameter microbeam of 220 MeV carbon (
C) ions, larvae were reared to evaluate the effects of irradiation. The results indicated that the knob formation at the irradiated segment was specially suppressed in 5.9, 56.4, 66.7 and 73.6 % of larvae irradiated with 120, 250, 400 and 600 Gy, respectively, but the other knob formations at the non-irradiated segments were not suppressed in either irradiation. Although some larva did not survive undesired non-targeted exposure, our present results indicate that this method would be useful to investigate the irradiation effect on a long developmental period of time. Moreover, our system could also be applied to other species by targeting tissues, or organs during development and metamorphosis in insect and animals.
, after heavy-ion irradiation; Analysis by transplantation of the irradiated organs using a transgenic silkworm strainKiguchi, Kenji*; Shirai, Koji*; Sakata, Toshiyuki*; Fukamoto, Kana; Kakizaki, Takehiko; Wada, Seiichi*; Sakashita, Tetsuya; Funayama, Tomoo; Hamada, Nobuyuki*; Kobayashi, Yasuhiko
JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 117, 2007/02
no abstracts in English
Sakata, Shinya; Totsuka, Toshiyuki; Kiyono, Kimihiro; Oshima, Takayuki; Sato, Minoru; Ozeki, Takahisa
Fusion Engineering and Design, 81(15-17), p.1775 - 1778, 2006/07
Times Cited Count：9 Percentile：53.38(Nuclear Science & Technology)no abstracts in English
Matsuda, Toshiaki; Totsuka, Toshiyuki; Tsugita, Tomonori; Oshima, Takayuki; Sakata, Shinya; Sato, Minoru; Iwasaki, Keita*
Fusion Science and Technology (JT-60 Special Issue), 42(2-3), p.512 - 520, 2002/09
Times Cited Count：3 Percentile：23.41(Nuclear Science & Technology)no abstracts in English
Kurihara, Kenichi; Kimura, Toyoaki; Yonekawa, Izuru; ; Matsukawa, Makoto; ; Kawamata, Yoichi; Totsuka, Toshiyuki; Akasaka, Hiromi; Sakata, Shinya
Fusion Engineering and Design, 11, p.441 - 454, 1990/00
no abstracts in English
Yonekawa, Izuru; ; Totsuka, Toshiyuki; Sakata, Shinya; Kimura, Toyoaki
KEK-Internal-89-7, p.273 - 276, 1989/08
no abstracts in English
Totsuka, Toshiyuki; Sakata, Shinya; Iba, Katsuyuki*
no journal, ,
no abstracts in English
Sakata, Toshiyuki*; Shirai, Koji*; Kiguchi, Kenji*; Fukamoto, Kana; Kakizaki, Takehiko; Sakashita, Tetsuya; Funayama, Tomoo; Hamada, Nobuyuki*; Kobayashi, Yasuhiko
no journal, ,
no abstracts in English
Fukamoto, Kana; Sakata, Toshiyuki*; Shirai, Koji*; Sakashita, Tetsuya; Funayama, Tomoo; Wada, Seiichi*; Hamada, Nobuyuki*; Kakizaki, Takehiko; Hara, Takamitsu*; Suzuki, Michiyo*; et al.
no journal, ,
Silkworm is an experimental insect good to investigate developmental biology or cell differentiation. Knobbed mutant is a quite unique and important model of cell differentiation, in that cells in the knob region consist of abnormally proliferated and stratified cells. In this study, the new application of irradiation with heavy ion microbeam for the first instar silkworm larvae was developed to clarify that when and where the knob mutant would form abnormal proliferation of epidermal cells. The holed aluminum plates were designed to fix the first instar larvae of silkworm during irradiation. After carbon ions microbeam irradiation, larvae were reared to evaluate the accuracy of irradiation. The deletion of knob was observed in over 70% of the larvae at fifth instar. The epidermal cells stayed, as it was a monolayer at irradiated region. These results indicate that heavy ion beam irradiation can control the abnormal cell division of epidermis in the knob mutant.
Fukamoto, Kana; Sakata, Toshiyuki*; Shirai, Koji*; Sakashita, Tetsuya; Funayama, Tomoo; Wada, Seiichi*; Hamada, Nobuyuki*; Kakizaki, Takehiko; Hara, Takamitsu*; Suzuki, Michiyo; et al.
no journal, ,
no abstracts in English
Sakata, Toshiyuki*; Shirai, Koji*; Tsuchiya, Shiori*; Kiguchi, Kenji*; Fukamoto, Kana; Sakashita, Tetsuya; Kobayashi, Yasuhiko; Sato, Shigeru*
no journal, ,
no abstracts in English
Kawashima, Kazuhito; Suzuki, Toshiyuki; Awa, Yasuaki; Sakata, Mami; Taguchi, Yuji
no journal, ,
no abstracts in English
, after heavy-ion irradiation; Detection and identification of the stage-specific markerKobayashi, Satoshi*; Sakata, Toshiyuki*; Tsuchiya, Shiori*; Shirai, Koji*; Kiguchi, Kenji*; Fukamoto, Kana; Sakashita, Tetsuya; Funayama, Tomoo; Kobayashi, Yasuhiko
no journal, ,
no abstracts in English
