Generation of magnetic fields at the 1MA pulsed power machine*

Generation of the magnetic field by different loads at the Zebra pulsed power machine was studied. The longitudinal B-field of 1.7 MG in the half-turn coils and transverse field of 4 MG on the rod loads were generated using a load current multiplier with current of 1.3 MA. The magnetic fields were measured with the back-reflected Faraday rotation diagnostics. A cutoff of the Faraday signal in spiral loads was studied. Inter-coil discharge in the spiral loads produced x-ray/UV burst and induced opacity in glass samples located 3-12 mm from the load. Opacity blocked the Faraday laser signal and magnetic fields. Half-turn Cu and Ta coils and rod loads did not impact closely located targets. Using half-turn coils, penetration of the 1 MG magnetic field in the stainless steel tubes is demonstrated. Experiments with plasma in the axial and transverse magnetic fields are presented.