An affordable 14 Tesla VLHC model bending magnet is under development. A recent validation test of two outer-layer Nb₃Sn race-track coils permitted an assessment of our grasp of several proposed technologies:
1) improved J_c, 2) iron coil-islands, 3) friction reduction, 4) coil-"skinning", and 5) low-tolerance coil-support.
        Two outer double-layer "wind-react", race-track coils, were assembled within an economical support structure, in a manner to maximize the Lorentz stresses. Very little training was observed, despite an anomalously low RRR, and a weakly pre-stressed, compliant support structure. Ramp-rate sensitivity was acceptable, but current decay while quenching was surprisingly fast.
        Success has encouraged further cost-reduction and field enhancement innovations.