This presentation focusses on the critical current characterization of REBCO conductors of different compositions. 2G HTSC tapes were produced by reel-to-reel Pulsed Laser Deposition (PLD) method using the flexible Hastelloy substrate having textured buffer layers fabricated by use of ion-beam assisted deposition (IBAD) of MgO. The optimizations of wires properties were carried out keeping in mind five potential application areas that include 1) superconducting fault-current limiters (65-77K) 2) rotating machines (1-3T and 65-77K); 3) accelerator magnets and coils for levitating devices (3-5T, 20-40K), 4) magnets for fusion reactors (12-20T, 20K) and 5) high-filed NMR devices (25-30T, 4.2K).
All measurements of the Ic were carried out using custom setup in HFLSM at IMR (Tohoku University) under the identical conditions for a very large number of the 30 µm width bridges fabricated by the picosecond laser micromachining.
The results of a statistical analysis of the Ic-B properties to determine reproducible deposition conditions for the production of thin HTSC tapes of each composition are generalized.
Acknowledgements: A part of this work was supported by the New Energy and Industrial Technology Development Organization (NEDO).
Keywords: Critical Current, PLD, REBCO, Coated Conductors