Conveners
Thu-Af-Or19 - High Tc Wires and Cables II
- Francesco Grilli (Karlsruhe Institute of Technology)
- Kathleen Amm (Brookhaven National Laboratory)
Developments in 2G HTS conductor performance continue to drive the design and operating limits for a broad range of demanding magnet applications. The design, testing and fabrication technology of 2G HTS (RE)BCO conductors is presented, highlighting the ability of 2G HTS wire to function under a wide range of operating conditions. SuperPower continues to address 2G HTS conductor development...
In 2018 SuperOx Japan reached production capacity of 200 km of 4 mm 2G HTS wires per year. The manufacturing of our standard 2G HTS wires was aimed at the needs of light-weight cables and superconducting fault current limiting devices (SFCL), which operate under the conditions of self-field and 70-77K. Although the standard SuperOx wires with Ic>500A for 12 mm width outperformed the needs of...
Magnet applications require coated conductors with high in-field performance, well-defined geometry, high mechanical stability, as well as adequate stabilization. At THEVA coated conductors are produced using an all PVD approach. The high performance of the tape is enabled by ISD-MgO buffer layers and several micro meter thick GdBCO HTS layers.
High performance at fields up to 31 T was...
Through a combination of thick films (4-5 µm) and a high density (8000 – 12000/µm^2) of fine nanocolumnar defects, excellent critical currents have been achieved in REBCO tapes over a wide temperature range of 4.2K – 65K and magnetic fields of 1.5T – 30T. Record-high engineering current density (Je) of 5200A/mm^2 at 4.2K, 15T (corresponding critical current density (Jc) of 10MA/cm^2) which is...
ReBCO CC (Rare earth barium copper oxide coated conductor) is a viable candidate as a conductor for future high-field magnets due to its mechanical strength, high Tc, and favorable Jc vs. B dependence. In practice, some ReBCO coils, especially solenoids, only utilize a fraction of the full critical current throughout the winding due to the large (5-7) anisotropy of Ic, thereby developing...
Advanced Conductor Technologies is developing high-temperature superconducting (HTS) Conductor on Round Core (CORC®) cables and wires for high-field accelerator, fusion and scientific magnets. One of the concerns with operating any HTS conductor in magnets that operate at currents exceeding 10,000 A at fields of over 20 T in future accelerator magnets, or 50,000 A at fields over 12 T in fusion...
ABSTRACT BODY:
HTS tapes, because of their widths and large shape aspect ratios, have not been readily manufacturable into Rutherford or Roebel cables, even though these kinds of cables are required for many large coil applications. A type of transposed Roebel cable is under development with 2G tape, but its design flexibility is very limited, and its processing very complex, as well as...
The HTS (high temperature superconductor) cable is an important component of large magnet system due to its excellent electromagnetic characteristics. The contact mechanical properties such as friction and contact resistance are significantly affected by the contact force among the HTS tapes in HTS cable when subjected to the strong magnetic field, high current, and low temperature in extreme...
