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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:15.26(Thermodynamics)no abstracts in English
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 NbAl insert coil was measured and compared with other Nb
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
Al insert decreased by approximately 5%. Nb
Al conductor indicated quit rigid characteristic under the electromagnetic force and suitable for future magnet with higher magnetic field and current.
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
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:10 Percentile:48.99(Engineering, Electrical & Electronic)Analysis of critical current () and current sharing temperature (
) was performed to the ITER Center Solenoid (ITER-CS) Model Coil Insert. Voltage behavior related to normal state transition of the conductor during
or
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
and
values, which are important parameters for the design of a large conductor coil, based on the property of strands composing the conductor.
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
The cool down of CS model coil and NbAl 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
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.
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 NbSn 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.
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:5 Percentile:34.81(Engineering, Electrical & Electronic)no abstracts in English
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
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
no abstracts in English
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:11 Percentile:61.40(Nuclear Science & Technology)no abstracts in English
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
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
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
Isono, Takaaki; Nishijima, Gen; Sugimoto, Makoto; Nunoya, Yoshihiko; Wakabayashi, Hiroshi*; Tsuji, Hiroshi
JAERI-Tech 2000-084, 393 Pages, 2001/02
no abstracts in English
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:70.71(Engineering, Electrical & Electronic)no abstracts in English
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:17.04(Engineering, Electrical & Electronic)no abstracts in English
A.Gilanyi*; Akiba, Masato; Okumura, Yoshikazu; Sugimoto, Makoto; Takahashi, Yoshikazu; Tsuji, Hiroshi
JAERI-Research 99-014, 71 Pages, 1999/03
no abstracts in English
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
Endo, Sakaru*; ; ; ; ; ; ; Nishi, Masataka; Isono, Takaaki; Nunoya, Yoshihiko; et al.
Teion Kogaku, 32(4), p.158 - 166, 1997/00
no abstracts in English
Isono, Takaaki; Nishi, Masataka; Nunoya, Yoshihiko; Yoshida, Kiyoshi; Tsuji, Hiroshi
Teion Kogaku, 32(4), p.150 - 157, 1997/00
no abstracts in English