Journal
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Volume 33, Issue 5, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2023.3236592
Keywords
Cable-in-conduit-conductor (CICC); fusion magnets; high temperature superconductor (HTS) coated conductors; twisted staked tape cable
Ask authors/readers for more resources
Technologies based on HTS are rapidly maturing, and several fusion projects are demonstrating the integration of HTS in coil systems. HTS has the potential to extend the operating space of fusion coils compared to LTS technologies, allowing for higher temperatures, magnetic field levels, and operating margins. The layout, feasibility, and performance demonstration of high-current conductors are crucial for HTS adoption.
Technologies based on High Temperature Superconductors (HTS) are evolving rapidly toward maturity. Within the magnetic confinement fusion environment, several projects are demonstrating the possibility to integrate HTS in the coil systems. With respect to Low Temperature Superconducting (LTS) technologies, HTS could allow extending the operating space of fusion coils, either at higher temperatures, or at higher magnetic field levels, and in any case with larger operating margins. Different perspectives and development strategies are proposed, depending on whether HTS is considered a technology to completely substitute LTS, or to integrate and extend its performance range. A fundamental common requirement is the assessment of the layout, the feasibility, and performance demonstration of high-current conductors. Starting from the results achieved with the Al-slotted core cable-in-conduit conductor, and with a view on existing concepts for standard copper and aluminum cables, we have designed a new HTS sector-cable concept, to allow a flexible conductor design and a robust industrial processing. Several trials have been carried out, to verify the manufacturing approach, using either Al- or Cu-based stabilizers. Prototype sub-cables have been characterized at 77 K and self-field, as a necessary step toward the final target of a CICC operating stably with 60 kA at 4.2 K and 18 T, that is presently of interest for the EU-DEMO Central Solenoid Coil.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available