The Magnetic Energy Storage System Used in ZT-1
The ZT-1 toroidal pinch experiment is driven by a magnetic energy storage system that uses four fuses to interrupt the current. One fuse package can interrupt 800 kA, develop 70 kV peak, and absorb 30 kJ. Each quadrant is driven by a fuse to increase the total voltage around the torus to 280 kV and the total inductively stored energy is 100 kJ. Approximately 10% agreement is obtained with a numerical calculation used to predict the fuse behavior. Inductive coupling of 14 nH between the four fuses eliminates the jitter of ~ 0.1 μs, observed with a single fuse.
KeywordsDischarge Tube Capacitor Bank Fuse Cross Section Aluminum Primary Fuse Mode
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