AC loss of the short coaxial superconducting cable model made from ReBCO coated tapes

• Published in: Journal of physics. Conference series 2008-02, Vol.97 (1), p.012198, Article 012198
• Main Authors: Šouc, J, Gömöry, F, Vojenčiak, M, Frolek, L, Isfort, D, Ehrenberg, J, Bock, J, Usoskin, A, Rutt, A
• Format: Article
• Language: English
• Subjects: Alternating current; Coaxial cables; Coils; Conductors; Current distribution; High temperature; Nonuniformity; Physics; Superconducting tapes; Superconductivity
• ISSN: 1742-6596; 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/97/1/012198

Coaxial cable model with both the core as well as the shield conductor made from high-temperature superconducting tapes of the 2nd generation was constructed. AC current was fed to the model of 0.5 m length using a cold core transformer system. The core consists of 14 EHTS YBCO tapes of 4 mm width, and its properties have been published already. Now the system was completed by the shield conductor using 16 ReBCO tapes of 10 mm width produced by Nexans. In this contribution, the properties of the shield conductor are reported in detail. The experimental data on ac transport loss are presented and compared with ac transport loss of the superconducting core. The currents in individual tapes and the total cable current was monitored using Rogowski coils. Significant non-uniformity of the current distribution was found, which is a common issue in short cable models. Therefore, the AC transport loss of the shield conductor was measured by 16 lifted loops placed along the cable, using the averaging method to extract the true loss voltage.