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

Abstract

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.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Rochester, NY (United States)
Publication Date:
Research Org.:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1556993
Report Number(s):
2018-248, 2471
Journal ID: ISSN 2469-9888; PRABCJ; 2018-248, 2471, 1511
Grant/Contract Number:  
NA0001944
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Volume: 22; Journal Issue: 8; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Pulsed power driver; High magnetic field; High energy density physics; Conceptual design

Citation Formats

Shapovalov, R. V., Brent, G., Moshier, R., Shoup, M., Spielman, R. B., and Gourdain, P. -A. Design of 30-T pulsed magnetic field generator for magnetized high-energy-density plasma experiments. United States: N. p., 2019. Web. doi:10.1103/PhysRevAccelBeams.22.080401.
Shapovalov, R. V., Brent, G., Moshier, R., Shoup, M., Spielman, R. B., & Gourdain, P. -A. Design of 30-T pulsed magnetic field generator for magnetized high-energy-density plasma experiments. United States. doi:10.1103/PhysRevAccelBeams.22.080401.
Shapovalov, R. V., Brent, G., Moshier, R., Shoup, M., Spielman, R. B., and Gourdain, P. -A. Fri . "Design of 30-T pulsed magnetic field generator for magnetized high-energy-density plasma experiments". United States. doi:10.1103/PhysRevAccelBeams.22.080401. https://www.osti.gov/servlets/purl/1556993.
@article{osti_1556993,
title = {Design of 30-T pulsed magnetic field generator for magnetized high-energy-density plasma experiments},
author = {Shapovalov, R. V. and Brent, G. and Moshier, R. and Shoup, M. and Spielman, R. B. and Gourdain, P. -A.},
abstractNote = {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.},
doi = {10.1103/PhysRevAccelBeams.22.080401},
journal = {Physical Review Accelerators and Beams},
number = 8,
volume = 22,
place = {United States},
year = {2019},
month = {8}
}

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