The Critical-Current Envelope

The map of how much current REBCO carries across field and temperature — the magnet's operating boundary.

Envelope

J_c(B,T)

Study

DOI 10.5281/zenodo.21842514

A superconductor's critical current falls as field and temperature rise, tracing a critical surface. Magnet design keeps operation safely inside it with margin. Reaching 16.84 T and 26.49 T means operating REBCO near the high-field frontier of that envelope, which the REBCO study maps explicitly.