Progress on MOD/RABiTSTM 2G HTS wire

• DOI: 10.1016/j.physc.2004.02.202
• Publication Date: 2004-06-03T12:31:55Z
• Authors: M.W. Rupich; W. Zhang; X. Li; T. Kodenkandath; D.T. Verebelyi; U. Schoop; C. Thieme; M. Teplitsky; J. Lynch; N. Nguyen; E. Siegal; J. Scudiere; V. Maroni; K. Venkataraman; D. Miller; T.G. Holesinger
• Keywords: 0103 physical sciences; 01 natural sciences

Abstract The development of the second generation (2G) high temperature superconducting wire has advanced beyond initial laboratory demonstrations and is now focused on developing and testing high critical current conductor designs required for commercial applications. The approach pursued at American Superconductor for 2G wire manufacturing is based on the combination of the RABiTSTM substrate–buffer technology with metal organic deposition (MOD) of the YBCO layer. This MOD/RABiTSTM approach has been demonstrated in 10 m lengths with critical currents of up to 184 A/cm-width (∼2.3 MA/cm2) and in short length with critical currents of up to 270 A/cm-width (∼3.4 MA/cm2). In addition to a high critical current, the superconducting wire must also meet stringent mechanical and electrical stability requirements that vary by application. Commercially viable architectures designed to meet these specifications have been fabricated and tested. Wires manufactured by this process have been successfully tested in prototype cable and coil applications.