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arXiv · 1809.03278

The conceptual design of 100-kA pulsed magnetic field generator for magnetized high-energy-density plasma experiments

R. V. Shapovalov·R. B. Spielman·G. Brent·P. -A. Gourdain
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Abstract

This paper presents the conceptual design of a high-voltage pulser intended to generate 30-T magnetic fields for magneto-inertial fusion experiments at the OMEGA facility. The pulser uses a custom capacitor bank and two externally triggered spark gaps to drive a multi-turn coil. This new high-voltage pulser is capable of storing 10 times more energy than the previous system, using a higher charge voltage (from 20 to 30 kV) and a larger capacitance (from 1 μF to 5 μF). Circuit simulations show that this pulser can deliver 100 kA into a 60-nH, 14-mΩ coil with a rise time of 1 μs. For a coil with 2 turns with an average coil diameter of 7.8 mm, this current translates into a 32-T peak magnetic field at coil center. This is a factor of three increase in the peak magnetic field compared to the present generator magnetic field capabilities.

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R. V. Shapovalov, R. B. Spielman, G. Brent, P. -A. Gourdain. 2018-09-10. The conceptual design of 100-kA pulsed magnetic field generator for magnetized high-energy-density plasma experiments. https://doi.org/10.1103/physrevaccelbeams.22.080401

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