Planar wire array performance scaling at multi-MA levels on the Saturn generator. Metadata

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Title

  • Main Title Planar wire array performance scaling at multi-MA levels on the Saturn generator.

Creator

  • Author: Chuvatin, Alexander S. (Laboratoire du Centre National de la Recherche Scientifique Ecole Polytechnique, Palaiseau, France)
    Creator Type: Personal
  • Author: Jones, Michael
    Creator Type: Personal
  • Author: Vesey, Roger Alan
    Creator Type: Personal
  • Author: Waisman, Eduardo M.
    Creator Type: Personal
  • Author: Esaulov, Andrey A. (University of Nevada, Reno, NV)
    Creator Type: Personal
  • Author: Ampleford, David J.
    Creator Type: Personal
  • Author: Kantsyrev, Victor Leonidovich (University of Nevada, Reno, NV)
    Creator Type: Personal
  • Author: Cuneo, Michael Edward
    Creator Type: Personal
  • Author: Rudakov, L. I. (Icarus Research Inc., Bethesda, MD)
    Creator Type: Personal
  • Author: Coverdale, Christine Anne
    Creator Type: Personal
  • Author: Jones, Brent Manley
    Creator Type: Personal
  • Author: Safronova, Alla S. (University of Nevada, Reno, NV)
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Sandia National Laboratories
    Place of Publication: United States

Date

  • Creation: 2007-10-01

Language

  • English

Description

  • Content Description: A series of twelve shots were performed on the Saturn generator in order to conduct an initial evaluation of the planar wire array z-pinch concept at multi-MA current levels. Planar wire arrays, in which all wires lie in a single plane, could offer advantages over standard cylindrical wire arrays for driving hohlraums for inertial confinement fusion studies as the surface area of the electrodes in the load region (which serve as hohlraum walls) may be substantially reduced. In these experiments, mass and array width scans were performed using tungsten wires. A maximum total radiated x-ray power of 10 {+-} 2 TW was observed with 20 mm wide arrays imploding in {approx}100 ns at a load current of {approx}3 MA, limited by the high inductance. Decreased power in the 4-6 TW range was observed at the smallest width studied (8 mm). 10 kJ of Al K-shell x-rays were obtained in one Al planar array fielded. This report will discuss the zero-dimensional calculations used to design the loads, the results of the experiments, and potential future research to determine if planar wire arrays will continue to scale favorably at current levels typical of the Z machine. Implosion dynamics will be discussed, including x-ray self-emission imaging used to infer the velocity of the implosion front and the potential role of trailing mass. Resistive heating has been previously cited as the cause for enhanced yields observed in excess of jxB-coupled energy. The analysis presented in this report suggests that jxB-coupled energy may explain as much as the energy in the first x-ray pulse but not the total yield, which is similar to our present understanding of cylindrical wire array behavior.
  • Physical Description: 62 p.

Subject

  • Keyword: Heating
  • Keyword: Performance
  • Keyword: K Shell
  • Keyword: Electrodes
  • STI Subject Categories: 70 Plasma Physics And Fusion Technology
  • Keyword: Velocity X-Rays-Measurement.
  • Keyword: X-Rays-Measurement.
  • Keyword: Inertial Confinement
  • Keyword: Arrays.
  • Keyword: Planar Transisters.
  • Keyword: Design
  • Keyword: Inductance
  • Keyword: Tungsten
  • Keyword: Evaluation
  • Keyword: Implosions
  • Keyword: Surface Area

Collection

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

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: SAND2007-6337
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/920806
  • Office of Scientific & Technical Information Report Number: 920806
  • Archival Resource Key: ark:/67531/metadc897791