It is now a matter of fact that parameters such as cable twist pitch (TP) and void fraction (VF) have a strong impact on Cable-in-Conduit Conductor performances. A proper choice of their values in the direction of raising the former (TP) and lowering the latter (VF) has been proven to considerably enhance the transport properties, though increasing the AC losses, and to appreciably reduce the conductor degradation with electromagnetic and thermal loading cycles. It has been also demonstrated that a further route for CICCs performance improvement is represented by a suitable optimization of the conductor shape with respect to the electromagnetic force distribution. In this sense, CIC conductors with high aspect ratio rectangular geometry, if properly oriented, have shown a better response to high electromagnetic pressure, as proved by experimental evidences. This paper, where the test results of a large rectangular Nb3Sn CIC conductor are interpreted, is intended to clarify the role of the conductor cross-section geometry on the electromagnetic load sharing among the strands and/or on the cable stiffness, and thus on the strain distribution over the cable wires. © 2010 IEEE.
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Turtù, S., Muzzi, L., Zignani, C. F., Corato, V., Della Corte, A., Di Zenobio, A., & Reccia, L. (2011). Role of the cross section geometry in rectangular Nb3Sn CICC performances. IEEE Transactions on Applied Superconductivity, 21(3 PART 2), 2032 - 2035. . https://doi.org/10.1109/TASC.2010.2091381