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arXiv · 2302.08979

Critical Current Measurement of REBCO Cables by Using a Superconducting Transformer

H. Yu·J. Lu·J. D. Weiss·D. C. van der Laan
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Abstract

Development of REBCO cables that carry high electrical current in high magnetic field is crucial for future large-scale magnet applications. This experimental work presents the critical current measurements of two different REBCO cables by a test facility at the National High Magnetic Field Laboratory (NHMFL). The simple-stacked cable is made by the NHMFL by stacking 21 REBCO tapes without soldering. The Conductor-on-Round-Core (CORC) cable provided by Advanced Conductor Technologies has 21 layers of REBCO tapes with 2 tapes/layer. The test facility consists of a 12 T split solenoid magnet with 15 cm bore providing transverse field to the samples, a superconducting transformer (SCT) as a current source providing up to 45 kA current. Special attentions were paid to fabrication of solder joints between REBCO cables and the SCT output. The voltage-current traces were measured as a function of magnetic field at 4.2 K, from which the critical currents are determined. The details of this measurement are discussed.

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H. Yu, J. Lu, J. D. Weiss, D. C. van der Laan. 2023-02-14. Critical Current Measurement of REBCO Cables by Using a Superconducting Transformer. https://doi.org/10.1109/tasc.2022.3143093

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