Simulation of Spheromak Evolution and Energy Confinement Metadata

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Title

  • Main Title Simulation of Spheromak Evolution and Energy Confinement

Creator

  • Author: Cohen, B
    Creator Type: Personal
  • Author: Hooper, E
    Creator Type: Personal
  • Author: Cohen, R
    Creator Type: Personal
  • Author: Hill, D
    Creator Type: Personal
  • Author: McLean, H
    Creator Type: Personal
  • Author: Wood, R
    Creator Type: Personal
  • Author: Woodruff, S
    Creator Type: Personal
  • Author: Sovinec, C
    Creator Type: Personal
  • Author: Cone, G
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: US Department of Energy (United States)

Publisher

  • Name: Lawrence Livermore National Laboratory
    Place of Publication: Livermore, California
    Additional Info: Lawrence Livermore National Lab., Livermore, CA (United States)

Date

  • Creation: 2004-11-09

Language

  • English

Description

  • Content Description: Simulation results are presented that illustrate the formation and decay of a spheromak plasma driven by a coaxial electrostatic plasma gun, and that model the energy confinement of the plasma. The physics of magnetic reconnection during spheromak formation is also illuminated. The simulations are performed with the three-dimensional, time-dependent, resistive magnetohydrodynamic NIMROD code. The simulation results are compared to data from the SSPX spheromak experiment at the Lawrence Livermore National Laboratory. The simulation results are tracking the experiment with increasing fidelity (e.g., improved agreement with measurements of the magnetic field, fluctuation amplitudes, and electron temperature) as the simulation has been improved in its representations of the geometry of the experiment (plasma gun and flux conserver), the magnetic bias coils, and the detailed time dependence of the current source driving the plasma gun, and uses realistic parameters. The simulations are providing a better understanding of the dominant physics in SSPX, including when the flux surfaces close and the mechanisms limiting the efficiency of electrostatic drive.
  • Physical Description: PDF-FILE: 30 ; SIZE: 1.9 MBYTES pages

Subject

  • Keyword: Plasma Guns
  • Keyword: Decay
  • Keyword: Amplitudes
  • Keyword: Electrostatics
  • STI Subject Categories: 70 Plasma Physics And Fusion Technology
  • STI Subject Categories: 43 Particle Accelerators
  • Keyword: Magnetic Reconnection
  • Keyword: Simulation
  • Keyword: Magnetic Surfaces
  • Keyword: Physics
  • Keyword: Confinement
  • Keyword: Electron Temperature
  • Keyword: Time Dependence
  • Keyword: Geometry
  • Keyword: Fluctuations
  • Keyword: Nimrod
  • Keyword: Magnetohydrodynamics
  • Keyword: Magnetic Fields

Source

  • Conference: Presented at: 46th Annual Meeting of the Division of Plasma Physics, Savannah, GA (US), 11/13/2004--11/19/2004

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: UCRL-CONF-207873
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 15011410
  • Archival Resource Key: ark:/67531/metadc1404899
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