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Takechi, Manabu; Matsunaga, Go; Sakurai, Shinji; Sasajima, Tadayuki; Yagyu, Junichi; Hoshi, Ryo*; Kawamata, Yoichi; Kurihara, Kenichi; JT-60SA Team; Nishikawa, T.*; et al.
Fusion Engineering and Design, 96-97, p.985 - 988, 2015/10
Times Cited Count：10 Percentile：64.63(Nuclear Science & Technology)Suzuki, Sadaaki; Yagyu, Junichi; Masaki, Kei; Nishiyama, Tomokazu; Nakamura, Shigetoshi; Saeki, Hisashi; Hoshi, Ryo; Sawai, Hiroaki; Hasegawa, Koichi; Arai, Takashi; et al.
NIFS-MEMO-67, p.266 - 271, 2014/02
no abstracts in English
Shibanuma, Kiyoshi; Arai, Takashi; Hasegawa, Koichi; Hoshi, Ryo; Kamiya, Koji; Kawashima, Hisato; Kubo, Hirotaka; Masaki, Kei; Saeki, Hisashi; Sakurai, Shinji; et al.
Fusion Engineering and Design, 88(6-8), p.705 - 710, 2013/10
Times Cited Count：10 Percentile：61.16(Nuclear Science & Technology)Shibanuma, Kiyoshi; Arai, Takashi; Kawashima, Hisato; Hoshino, Katsumichi; Hoshi, Ryo; Kobayashi, Kaoru; Sawai, Hiroaki; Masaki, Kei; Sakurai, Shinji; Shibama, Yusuke; et al.
Journal of Plasma and Fusion Research SERIES, Vol.9, p.276 - 281, 2010/08
The JT-60 SA project is a combined project of JA-EU satellite tokamak program under the Broader Approach (BA) agreement and JA domestic program. Major components of JT-60SA for assembly are vacuum vessel (VV), superconducting coils (TF coils, EF coils and CS coil), in-vessel components such as divertor, thermal shield and cryostat. An assembly frame (with the dedicated cranes), which is located around the tokamak, is adopted to carry out effectively the assembly of tokamak components in the tokamak hall, independently of the facility cranes in the building. The assembly frame also provides assembly tools and jigs with jacks to support temporarily the components as well as to adjust the components at right positions. In this paper, the assembly scenario and scequence of the major components such as VV and TFC and the concept of the assembly frame including special jigs and fixtures are discussed.
Kizu, Kaname; Tsuchiya, Katsuhiko; Obana, Tetsuhiro*; Takahata, Kazuya*; Hoshi, Ryo; Hamaguchi, Shinji*; Nunoya, Yoshihiko; Yoshida, Kiyoshi; Matsukawa, Makoto; Yanagi, Nagato*; et al.
Fusion Engineering and Design, 84(2-6), p.1058 - 1062, 2009/06
Times Cited Count：12 Percentile：62.36(Nuclear Science & Technology)The maximum magnetic field and maximum current of EF coils for JT-60SA is 6.2T, 20 kA, respectively. The EF coil conductors are NbTi cable-in-conduit (CIC) conductor with SS316L conduit. In order to confirm the performance of current sharing temperature (
) tests under coil operational condition was performed. As a results, the degradation of was 0.01-0.08 K indicating that the conductor design and its fabrication method is appropriate. Experimental results were compared with the 
and by standard plasma operation scenario. It was confirmed that the conductor has margin of 
1K.
Obana, Tetsuhiro*; Takahata, Kazuya*; Hamaguchi, Shinji*; Yanagi, Nagato*; Mito, Toshiyuki*; Imagawa, Shinsaku*; Kizu, Kaname; Tsuchiya, Katsuhiko; Hoshi, Ryo; Yoshida, Kiyoshi
Fusion Engineering and Design, 84(7-11), p.1442 - 1445, 2009/06
Times Cited Count：18 Percentile：74.76(Nuclear Science & Technology)The superconductor test facility in National Institute for Fusion Science (NIFS) has been upgraded in order to test cable-in-conduit (CIC) conductors for the JT-60SA equilibrium field (EF) coil. In the test facility, supercritical helium (SHe) lines were newly assembled with transfer tubes and a heat exchanger. The CIC conductor was covered with a thermal insulation vessel filled with gas helium at atmospheric pressure. The temperature of the conductor was varied using a film heater attached to an inlet pipe. The Ic and Tcs measurements of the prototype CIC conductor have successfully been carried out with the upgraded test facility. In the measurements, the conductor temperature was precisely controlled.
Al conductorKoizumi, Norikiyo; Ando, Toshinari; Takahashi, Yoshikazu; Matsui, Kunihiro; Nakajima, Hideo; Tsuchiya, Yoshinori; Kikuchi, Kenji; Nunoya, Yoshihiko; Kato, Takashi; Isono, Takaaki; et al.
Senshin A15-gata Kagobutsu Chodendo Senzai Shimpojiumu Rombunshu, p.5 - 9, 2000/00
no abstracts in English
Kizu, Kaname; Tsuchiya, Katsuhiko; Hoshi, Ryo; Yoshida, Kiyoshi; Matsukawa, Makoto; Obana, Tetsuhiro*; Takahata, Kazuya*; Hamaguchi, Shinji*; Yanagi, Nagato*; Imagawa, Shinsaku*; et al.
no journal, ,
The maximum magnetic field and maximum current of EF coils for JT-60SA is 6.2 T, 20 kA, respectively. The EF coil conductors are NbTi cable-in-conduit (CIC) conductor with SS316L conduit. In order to confirm the performance of current sharing temperature (Tcs) tests under coil operational condition was performed. As a results, the degradation of Tcs was 0.02-0.07 K indicating that the conductor design and its fabrication method is appropriate.
Kondo, Masayoshi*; Koike, Yosuke*; Okuhara, Hiroyuki*; Kobayashi, Hitoshi*; Hoshi, Yosuke*; Nomizu, Toshikazu*; Yoshihara, Ryohei; Hase, Yoshihiro
no journal, ,
no abstracts in English
Yoshida, Kiyoshi; Tsuchiya, Katsuhiko; Kizu, Kaname; Murakami, Haruyuki; Hoshi, Ryo; Komeda, Masao*; Matsukawa, Makoto
no journal, ,
The upgrade of JT-60U magnet system to superconducting coils (JT-60SA) has been decided by both parties of Japan and EU in the framework of the Broader Approach agreement. The final specifications of a central solenoid and equilibrium field coils are defined by optimizing the operational flexibility of plasma scenario. These coils are designed and evaluated to meet requirements. The fabrication of superconducting conductors for the poloidal field coils has been started from April 2008, in parallel with the detailed design of each coil.
Onishi, Yoshihiro; Asakawa, Shuji; Ichige, Toshikatsu; Hoshi, Ryo; Kamiya, Koji; Yoshida, Kiyoshi
no journal, ,
no abstracts in English
Onishi, Yoshihiro; Ichige, Toshikatsu; Hoshi, Ryo; Kamiya, Koji; Yoshida, Kiyoshi
no journal, ,
no abstracts in English
Kubo, Hirotaka; Arai, Takashi; Hasegawa, Koichi; Hoshi, Ryo*; Kawashima, Hisato; Maesaki, Yoshitaka; Masaki, Kei; Sawai, Hiroaki; Shibanuma, Kiyoshi; Tabe, Masato; et al.
no journal, ,
The JT-60SA tokamak, which is a large superconducting tokamak, needs to be assembled consistently with high precision; assembly of the JT-60SA tokamak has been studied. The absolute coordinate system for the assembly is defined on the basis of the coordinate system of the JT-60 torus hall. The origin ((x, y, z) = (0, 0, 0)) of the absolute coordinate system is defined to be the center of the VV in the plasma operation. A consistent global scenario of the assembly is studied. Assembly procedures and tools for major components such as the TFCs are studies.
Arai, Takashi; Hasegawa, Koichi; Hoshi, Ryo; Kawashima, Hisato; Kubo, Hirotaka; Masaki, Kei; Sawai, Hiroaki; Shibanuma, Kiyoshi; Tsukao, Naohiro; Yagyu, Junichi; et al.
no journal, ,
In a JT-60SA project, JT-60U is repaired to superconductivity tokamak JT-60 SA as a satellite tokamak plan by "broad approach (BA) activities towards realization of the early stage of nuclear fusion energy" who carries out by Japan-Europe cooperation. JT-60SA is built in the torus hall of a JT-60 experiment building main part after demolition of JT-60U equipment. In JT-60 SA, arrangement examination and an interference check are performed about the apparatus of the structure which becomes intricate intricately using a 3D-CAD model. A plan for the three-dimensional measuring instrument (laser tracker) which is leading-edge technology to perform position measurement is carried out. The laser tracker is highly precise as compared with the usual measuring instrument, and can make a fabrication error small as much as possible. A lecture describes position measurement together with an assembly procedure.
Hasegawa, Koichi; Arai, Takashi; Hoshi, Ryo; Masaki, Kei; Saeki, Hisashi; Sakata, Shinya; Sawai, Hiroaki; Shibanuma, Kiyoshi; Suzuki, Sadaaki; Tsukao, Naohiro; et al.
no journal, ,
JAEA pushes forward construction of superconduction tokamak (JT-60SA) as part of Broader Approach activity in cooperation with EU. JT-60SA is concentrated and highly precise with a large structure in the limited space, and it is necessary to assemble it. Therefore, from 2007, assembling examination using the 3D CAD has been performed. By this lecture introduce the examination situation of the assembling procedures such as TF coil, a vacuum vessel, cryostat, EF coil of JT-60SA.
Yagyu, Junichi; Masaki, Kei; Suzuki, Sadaaki; Nishiyama, Tomokazu; Nakamura, Shigetoshi; Saeki, Hisashi; Hoshi, Ryo; Sawai, Hiroaki; Hasegawa, Koichi; Arai, Takashi; et al.
no journal, ,
no abstracts in English
Takechi, Manabu; Matsunaga, Go; Sasajima, Tadayuki; Yagyu, Junichi; Sakurai, Shinji; Hoshi, Ryo; Kawamata, Yoichi; Kurihara, Kenichi; Nakamura, Kazuo*
no journal, ,
On JT-60SA, magnetic probe for plasma shape and position control, one-turn loop, Rogowski coil for plasma current measurement, diamagnetic loop, magnetic probe for MHD instability and RWM control, and so on will be installed. R&D of each sensor is now going on. The connector system will be adopted as the connection between the sensor and MI cable for signal for ease of installation and exchange of sensors. Therefore, we have developed the connector for MI cable. Moreover, the connection box architecture for easy connection in the vacuum vessel will be adopted as the connection between the single MI cable and the duplex MI cable for the one-turn loop and the diamagnetic loop. Therefore, we will adopted the ceramic terminal as termination sealant of MI cable.
raysYamazaki, Takumi; Takada, Chie; Nakamura, Keisuke; Sagawa, Naoki; Hoshi, Katsuya; Nakagawa, Takahiro; Takimoto, Misaki; Tanimura, Yoshihiko*; Takahashi, Fumiaki; Momose, Takumaro; et al.
no journal, ,
no abstracts in English
