Feasibility study on large-scale, high current density superconductor by dynamic stabilization Part 2: stability margin

✍ Scribed by T Ogasawara

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 319 KB
• Volume: 27
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(87)90046-4

✦ Synopsis

In Part 1 of this Paper 1, the stability margin of a strip superconductor was analysed theoretically to prove scientific feasibility of high current density, large-scale superconductors. As a typical example, Cu-Nb3Sn-Cu conductor is investigated: the Cu and Nb3Sn were 1 mm and 50 pm thick, respectively, and the strip width was 50 ram. If the critical current density of limiting stability Jc = 1.29 × 10 l° A m-2 is assumed, the stability margin of pulsive field applied perpendicular to the broad face of the conductor becomes 4.9 T. The thermal margin is shown to be ~5 x 104 J m -3 when disturbances are point-like and transient in nature. These results indicate that the strip conductor is stable enough to be wound into superconducting magnets.