Compact differential B-dot monitors for measuring current on a fast pulsed power generator

Compact differential B-dots have been mounted on a fast pulsed power generator for experimental current measurements. The fast pulsed power generator is named Thunderbird, which is capable of 130 kA in ∼25 to 35 ns rise-time. A compact design (1.0 mm diameter loops in an 8.0 mm diameter body) of the B-dots has been implemented to match the need and specifications of the Thunderbird generator. The B-dots have been calibrated using a short circuit load geometry for two conditions, an uncompressed and a compressed pulse, with a circuit model, and results are shown.