The current capacity tests of the Tokamak T-15 Nb/sub 3/Sn toroidal coil assembly

1991 
The Nb/sub 3/Sn magnet toroidal field coil assembly of Tokamak T-15 has shown its workability up to the rated magnetic field (3.5 T at the axis and 6.6 T at the coils). The dependence of the quench current on winding temperature was obtained. Its extrapolation shows that operation at 4.5 T will be possible at a temperature of 4.5 K. The coil which limits the total current of the coil assembly was identified. Poloidal field changes produced by plasma current disruptions with a field change rate of up to 15 T/s did not disturb the coil assembly operation.
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