Design of 30-T pulsed magnetic field generator for magnetized high-energy-density plasma experiments

Journal Article · 09 August 2019 · Physical Review Accelerators and Beams

DOI: https://doi.org/10.1103/PhysRevAccelBeams.22.080401 · OSTI ID:1556993

Shapovalov, R. V. ^[1]; Brent, G. ^[2]; Moshier, R. ^[2]; Shoup, M. ^[2]; Spielman, R. B. ^[2]; Gourdain, P. -A. ^[2]

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1. Univ. of Rochester, NY (United States); Laboratory for Laser Energetics, University of Rochester
2. Univ. of Rochester, NY (United States)

We introduce 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 kV 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 an element of three increase in the peak magnetic field compared to the present generator magnetic field capabilities.

• Research Organization: Univ. of Rochester, NY (United States). Lab. for Laser Energetics
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: NA0001944
• OSTI ID: 1556993
• Report Number(s): 2018--248, 2471; 2018-248, 2471, 1511
• Journal Information: Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Journal Issue: 8 Vol. 22; ISSN 2469-9888; ISSN PRABCJ
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English