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Journal Articles

Acoustic emission and disturbances in central solenoid model coil for international thermonuclear experimental reactor

Arai, K.*; Ninomiya, Akira*; Ishigooka, Takeshi*; Takano, Katsutoshi*; Nakajima, Hideo; Michael, P.*; Vieira, R.*; Martovetsky, N.*; Sborchia, C.*; Alekseev, A.*; et al.

Cryogenics, 44(1), p.15 - 27, 2004/01

 Times Cited Count:3 Percentile:83.36(Thermodynamics)

no abstracts in English

Journal Articles

Pressure drop characteristics of Nb$$_{3}$$Al cable-in-conduit conductor under electromagnetic force; Relation between pressure drop characteristics and cable stiffness

Hamada, Kazuya; Matsui, Kunihiro; Takahashi, Yoshikazu; Nakajima, Hideo; Kato, Takashi; CS Model Coil Test Group

Teion Kogaku, 38(8), p.417 - 424, 2003/08

As one of the R&D of ITER. a hydraulic performance of Nb$$_{3}$$Al insert coil was measured and compared with other Nb$$_{3}$$Sn conductors. It seems that a longer twist pitch will promote a triangle helium flow space among 4th twist stage cables, jacket and center channel and contribute reduction of pressure drop. Under 500 kN/m of the electromagnetic force, the pressure drop of the Nb$$_{3}$$Al insert decreased by approximately 5%. Nb$$_{3}$$Al conductor indicated quit rigid characteristic under the electromagnetic force and suitable for future magnet with higher magnetic field and current.

Journal Articles

Experimental results of ITER Nb$$_{3}$$Al insert; Characteristics of acoustic emission

Ninomiya, Akira*; Arai, Kazuaki*; Takano, Katsutoshi*; Tsugawa, Kazuhito*; Ishigooka, Takeshi*; Kaiho, Katsuyuki*; Nakajima, Hideo; Okuno, Kiyoshi; CS Model Coil Test Group

Teion Kogaku, 38(8), p.425 - 433, 2003/08

no abstracts in English

Journal Articles

Evaluation method of critical current and current sharing temperature for large-current Cable-in-Conduit conductors

Nunoya, Yoshihiko; Isono, Takaaki; Sugimoto, Makoto; Takahashi, Yoshikazu; Nishijima, Gen*; Matsui, Kunihiro; Koizumi, Norikiyo; Ando, Toshinari*; Okuno, Kiyoshi

IEEE Transactions on Applied Superconductivity, 13(2), p.1404 - 1407, 2003/06

 Times Cited Count:9 Percentile:51.36(Engineering, Electrical & Electronic)

Analysis of critical current ($$I_c$$) and current sharing temperature ($$T_{cs}$$) was performed to the ITER Center Solenoid (ITER-CS) Model Coil Insert. Voltage behavior related to normal state transition of the conductor during $$I_c$$ or $$T_{cs}$$ measurement has not been well understood especially in case of such a large cable with more than one thousand strands as this coil. From the detailed analysis of the voltage behavior of the coil, it is found that the average of electric field in the strand-longitudinal direction over the conductor cross section is equal to the average field of one strand along the conductor length, whose integral was measured by the voltage taps during the coil test. It is because twist pitch of the cable is less than the range of longitudinal field variation in this case. This evaluation method can estimate voltage behavior and predict $$I_c$$ and $$T_{cs}$$ values, which are important parameters for the design of a large conductor coil, based on the property of strands composing the conductor.

JAEA Reports

Nb$$_3$$Al insert experiment log book; 3rd Experiment of CS model coil

Sugimoto, Makoto; Koizumi, Norikiyo; Isono, Takaaki; Matsui, Kunihiro; Nunoya, Yoshihiko; Tsutsumi, Fumiaki*; Oshikiri, Masayuki*; Wakabayashi, Hiroshi*; Okuno, Kiyoshi; Tsuji, Hiroshi

JAERI-Tech 2002-080, 100 Pages, 2002/11

JAERI-Tech-2002-080.pdf:7.89MB

The cool down of CS model coil and Nb$$_3$$Al insert was started on March 4, 2002. It took almost one month and immediately started coil charge since April 3, 2002. The charge test of Nb$$_3$$Al insert and CS model coil was completed on May 2, 2002. All of the experiments including the warm up was also completed on May 30, 2002.In this campaign, total shot numbers were 102 and the size of the data file in the DAS (Data Acquisition System) was about 5.2 GB. This report is a database that consists of the log list and the log sheets of every shot.

Journal Articles

Current sharing temperature of the ITER-TF insert

Nunoya, Yoshihiko; Sugimoto, Makoto; Isono, Takaaki; Hamada, Kazuya; Matsui, Kunihiro; Okuno, Kiyoshi; CS Model Coil Test Group

Teion Kogaku, 37(10), p.523 - 530, 2002/10

Vurrent sharing temperature (Tcs) measurement of ITER toroidal field insert was performed. The coil is Nb$$_3$$Sn superconducting coil and was installed inside of the ITER CS model coil as a backup field coil. Relation between the voltage of individual strand composing TF insert conductor and the measured voltage using the taps on the jacket is investigated and the evaluation method for Tcs measurement was established. The obtained results shows that there was discrepancy between the expected value from the strand data and the measured value which is lower by about 1.2K. Some discrepancy was already observed just after cool down of the insert before energizing.

Journal Articles

Pulsed operation test results of the ITER-CS model coil and CS insert

Ando, Toshinari*; Isono, Takaaki; Kato, Takashi; Koizumi, Norikiyo; Okuno, Kiyoshi; Matsui, Kunihiro; Martovetsky, N.*; Nunoya, Yoshihiko; Ricci, M.*; Takahashi, Yoshikazu; et al.

IEEE Transactions on Applied Superconductivity, 12(1), p.496 - 499, 2002/03

 Times Cited Count:4 Percentile:67.96(Engineering, Electrical & Electronic)

no abstracts in English

Journal Articles

Experimental results of pressure drop measurement in ITER CS model coil tests

Hamada, Kazuya; Kato, Takashi; Kawano, Katsumi; Hara, Eiji*; Ando, Toshinari; Tsuji, Hiroshi; Okuno, Kiyoshi; Zanino, L.*; Savoldi, L.*

AIP Conference Proceedings 613, p.407 - 414, 2002/00

no abstracts in English

JAEA Reports

TF insert experiment log book; 2nd experiment of CS model coil

Sugimoto, Makoto; Isono, Takaaki; Matsui, Kunihiro; Nunoya, Yoshihiko; Tsutsumi, Fumiaki*; Tamiya, Tadatoshi*; Oshikiri, Masayuki*; Wakabayashi, Hiroshi*; Okuno, Kiyoshi; Tsuji, Hiroshi

JAERI-Tech 2001-085, 104 Pages, 2001/12

JAERI-Tech-2001-085.pdf:4.64MB

no abstracts in English

Journal Articles

Development of ITER-CS model coil terminal assembling by using indium wires

Takahashi, Yoshikazu; Kato, Takashi; Nunoya, Yoshihiko; Ando, Toshinari; Nishijima, Gen; Nakajima, Hideo; Hiyama, Tadao; Sugimoto, Makoto; Isono, Takaaki; Koizumi, Norikiyo; et al.

Fusion Engineering and Design, 58-59, p.93 - 97, 2001/11

 Times Cited Count:7 Percentile:48.75

no abstracts in English

Journal Articles

Critical current and sharing temperature of the ITER-CS insert coil

Nunoya, Yoshihiko; Isono, Takaaki; Sugimoto, Makoto; Takahashi, Yoshikazu; Ando, Toshinari; Nishijima, Gen; CS Model Coil Test Group

Teion Kogaku, 36(6), p.354 - 360, 2001/06

no abstracts in English

Journal Articles

Cool-down, static heat load and warm-up performance of the central solenoid model coil and the central solenoid insert model coil

Hara, Eiji*; Hamada, Kazuya; Kawano, Katsumi; Kato, Takashi; Shimba, Toru*; CS Model Coil Test Group

Teion Kogaku, 36(6), p.324 - 329, 2001/06

no abstracts in English

Journal Articles

Experimental results of CS model coil; Mechanical performance

Sugimoto, Makoto; Nakajima, Hideo; Tsuchiya, Yoshinori; Kubo, Hiroatsu*; CS Model Coil Test Group

Teion Kogaku, 36(6), p.336 - 343, 2001/06

no abstracts in English

JAEA Reports

CS model coil experiment log book

Isono, Takaaki; Nishijima, Gen; Sugimoto, Makoto; Nunoya, Yoshihiko; Wakabayashi, Hiroshi*; Tsuji, Hiroshi

JAERI-Tech 2000-084, 393 Pages, 2001/02

JAERI-Tech-2000-084.pdf:16.39MB

no abstracts in English

Journal Articles

Completion of CS insert fabrication

Sugimoto, Makoto; Isono, Takaaki; Nunoya, Yoshihiko; Koizumi, Norikiyo; Nakajima, Hideo; Kato, Takashi; Matsukawa, Makoto; Hamada, Kazuya; Matsui, Kunihiro; Nishijima, Gen; et al.

IEEE Transactions on Applied Superconductivity, 10(1), p.564 - 567, 2000/03

 Times Cited Count:22 Percentile:27.12(Engineering, Electrical & Electronic)

no abstracts in English

Journal Articles

R&D activity of SAGBO avoidance for the CS insert fabrication

Sugimoto, Makoto; Isono, Takaaki; Koizumi, Norikiyo; Nakajima, Hideo; Kato, Takashi; Hamada, Kazuya; Nunoya, Yoshihiko; Matsui, Kunihiro; Sawada, Kenji*; Takahashi, Yoshikazu; et al.

IEEE Transactions on Applied Superconductivity, 9(2), p.636 - 639, 1999/06

 Times Cited Count:1 Percentile:82.19(Engineering, Electrical & Electronic)

no abstracts in English

JAEA Reports

AC loss calculation of central solenoid model coil

A.Gilanyi*; Akiba, Masato; Okumura, Yoshikazu; Sugimoto, Makoto; Takahashi, Yoshikazu; Tsuji, Hiroshi

JAERI-Research 99-014, 71 Pages, 1999/03

JAERI-Research-99-014.pdf:3.56MB

no abstracts in English

Journal Articles

Development of the CS insert coil

Sugimoto, Makoto; *; Isono, Takaaki; Koizumi, Norikiyo; Nakajima, Hideo; Kato, Takashi; Nunoya, Yoshihiko; Matsui, Kunihiro; Takahashi, Yoshikazu; Ando, Toshinari; et al.

Proc. of 15th Int. Conf. on Magnet Technology (MT-15), p.409 - 412, 1997/00

no abstracts in English

Journal Articles

Development of Nb$$_{3}$$Sn strands for the International Thermonuclear Experimental Reactor (ITER) in Japan

Isono, Takaaki; Nishi, Masataka; Nunoya, Yoshihiko; Yoshida, Kiyoshi; Tsuji, Hiroshi

Teion Kogaku, 32(4), p.150 - 157, 1997/00

no abstracts in English

Journal Articles

Mass production of Nb$$_{3}$$Sn strands by internal tin diffusion prosess for the ITER project

*; Kubo, Yoshio*; *; *; *; *; *; Isono, Takaaki; Nunoya, Yoshihiko; Yoshida, Kiyoshi; et al.

Teion Kogaku, 32(4), p.173 - 180, 1997/00

no abstracts in English

25 (Records 1-20 displayed on this page)