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In this test, the coil reached (in stable operation) a field of 9 T at 140% of rated current. It reached the short-sample values of the strands used in the cable. The coil was operated up to 8 T with and without poloidal field transients in a toroidal configuration. The mass flow rate was reduced by a factor of 5 compared with the design value without any visible impact on stability. Averaged AC losses (winding, 14 W; case, 7 W) were measured under Large Coil Task (LCT)-specified poloidal field pulses, and the findings agreed with those of the short-sample measurements. The coils mechanical properties, which behaved as theoretically predicted, are also reported. All results obtained are thought to demonstrate that the applied technology has achieved reliable engineering standards.
Date of Publication: Mar 1988