The Pre-Cusp Phase of TORMAC IV and V Metadata

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Title

  • Main Title The Pre-Cusp Phase of TORMAC IV and V

Creator

  • Author: Vella, M. C.
    Creator Type: Personal
  • Author: Feinberg, B.
    Creator Type: Personal

Contributor

  • Sponsor: Lawrence Berkeley National Laboratory. Physics Division.
    Contributor Type: Organization

Publisher

  • Name: Lawrence Berkeley National Laboratory
    Place of Publication: Berkeley, California
    Additional Info: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (United States)

Date

  • Creation: 1978-04-01

Language

  • English

Description

  • Content Description: An heuristic analysis of the pre-cusp phase of the present Tormac experiments has been carried out. The immediate goal has been to identify the requirements for producing a stabilized pinch in Tormac V qualitatively similar to that in Tormac IV. Concurrently, V has been modified to increase the pinch current and experimental investigation is underway. The experimental procedure is to introduce a toroidal magnetic field into the gas filled chamber. A toroidal electric field is then induced which ionizes the gas; the associated toroidal current simultaneously pinches the discharge. Uncertainty about the details of this process, in particular, about the amount of toroidal flux trapped within the pinch, has led to a one parameter theory. Speculation about the plasma heating mechanism and the subsequent interaction of pinch and cusp is left aside at this time. The chambers are basically rectangular in cross section; but, for simplicity, an equivalent radius is used. Although the experimental discharge probably evolves into a diffuse pinch, a cylindrical sheet pinch model is studied as a first step in understanding the qualitative features of the experiment. A simple Alfven scaling for instability time scales, appropriate for the previous weak pinch and considered in the design of the ringing frequency of the induction circuit is now supplemented by the sheet pinch model. If merited, a more quantitative numerical diffuse pinch model can be developed later. It should be pointed out that cusp confinement, the central problem of the Tormac program, is not addressed here. The goal is simply to identify the requirements for reproducing this particular phase of the Tormac IV experiment.
  • Physical Description: 19 p.

Subject

  • Keyword: Cusped Geometries
  • Keyword: Plasma Heating
  • Keyword: Magnetic Fields
  • STI Subject Categories: 99 General And Miscellaneous//Mathematics, Computing, And Information Science
  • Keyword: Cross Sections
  • Keyword: Electric Fields
  • Keyword: Design
  • Keyword: Confinement
  • Keyword: Instability
  • Keyword: Induction

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.: LBL-7569
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.2172/1007488
  • Office of Scientific & Technical Information Report Number: 1007488
  • Archival Resource Key: ark:/67531/metadc846329
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