Novel 30 mm Wide IBAD-MgO REBCO coated conductors developed at the KC4 Facility

Various applications of High-temperature superconductivity have been investigated since the last century, particularly for coated conductors. Due to their mechanical flexibility and high current carrying capacities, coated conductors or 2G HTS tapes have paved the way for practical applications for power transmission, generators, and other large-scale applications. Since they can withstand very high magnetic field without losing their superconducting properties, they have been investigated for NMR magnets, particle accelerators and fusion. Due to the wide range of possible applications and further R&D in this field, the KIT-CERN Collaboration on Coated Conductors (KC4) was established to investigate how small scale PLD parameters can be transferred to large scale Coated Conductor manufacturing. This is a one of a kind joint-open collaboration between KIT and CERN which will help bridge the gap between research and large-scale manufacturing. The production line originally established by Bruker, after its assembly at the Institute for Technical Physics (ITEP, Karlsruhe Institute of Technology) has been used to produce REBCO CCs since 2023. ... mehrMeasurements of the Ic on 12 mm wide tapes show quite good values of 300 A/cm (width) at 77K, and there is potential for further improvement and upscaling.
In this poster, we will focus on a novel HTS coated conductor, which is the first ever 30mm wide coated conductor on IBAD MgO, developed at the KC4 production line at ITEP, KIT. The first depositions were carried out on 30mm wide IBAD MgO metal tapes, that were highly homogenous with self-field Jc values at 77 K and 30 K of 1.0 MA/cm2 and 6.6MA/cm2 respectively. These wide tapes have the potential to be used for various applications in RF cavities, undulators and novel magnet architectures such as DUDA [1].

References:
[1] Tabea Arndt et al 2021 Supercond. Sci. Technol. 34 095006.