Evaluation of Critical Current Performance of an Nb3Al Conductor with Stainless Steel Conduit
| العنوان: | Evaluation of Critical Current Performance of an Nb3Al Conductor with Stainless Steel Conduit |
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| المؤلفون: | G. Vecsey, Yoshihiko Nunoya, Yoshikazu Takahashi, Yoshinori Tsuchiya, Kunihiro Matsui, Mitsuhiro Arika, Katsumi Kawano, Hideo Nakajima, A.M. Fuchs, Takashi Kato, Hiroshi Tsuji, Toshinari Ando, Norikiyo Koizumi, Tadao Hiyama, Kiyoshi Okuno, Katsuhiko Asano, Kenji Kikuchi, Katsunori Azuma, Takaaki Isono, Makoto Sugimoto, Pierluigi Bruzzone |
| المصدر: | TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan). 36:478-485 |
| بيانات النشر: | Cryogenic Association of Japan, 2001. |
| سنة النشر: | 2001 |
| مصطلحات موضوعية: | Materials science, Electrical conduit, Fabrication, Strain (chemistry), Thermal, Relaxation (NMR), Critical current, Composite material, Thermal expansion, Conductor |
| الوصف: | An Nb3Al conductor with stainless steel (SS) conduit has been developed in the framework of ITER Engineering Design Activity. The critical current performance of this conductor was experimentally investigated by using a short conductor sample. The results show that the critical current achieves the expected, resulting in demonstrating the validity of the fabrication method. The thermal strain is generally applied to the strands if SS conduit is used because of the different thermal expansion between the strands and SS conduit. However, it was not applied in our sample, since the conductor length, a few meters, is too short to keep it by friction force between the cable and conduit. The thermal strain applied to the strands in a long conductor is therefore estimated by using the solid model, in which the strain on the strands and conduit are calculated from the equilibrium of their thermal forces, ignoring the effect of cabling on relaxation of the strain on the strands. The results indicate that the Nb3Al strands are subjected to a compressive thermal strain of less than 0.4%. The critical current degradation by this is less than 10%, even though the SS conduit is used. Consequently, its critical current is estimated to be 90kA, which is sufficiently high compared with the nominal, 46kA, at 13T and 4.5K. Furthermore, it should be noted that the large thermal force, 80kN, appears after the heat treatment at room temperature. |
| تدمد: | 1880-0408 0389-2441 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::fef41b7ffaf930dfea68d06f2913420b https://doi.org/10.2221/jcsj.36.478 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........fef41b7ffaf930dfea68d06f2913420b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18800408 03892441 |
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