ZORNOC: a 1 1/2-D tokamak data analysis code for studying noncircular high beta plasmas

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A new tokamak data analysis code, ZORNOC, was developed to study noncircular, high beta plasmas in the Impurity Study Experiment (ISX-B). These plasmas exhibit significant flux surface shifts and elongation in both ohmically heated and beam-heated discharges. The MHD equilibrium flux surface geometry is determined by solving the Grad-Shafranov equation based on: (1) the shape of the outermost flux surface, deduced from the magnetic loop probes; (2) a pressure profile, deduced by means of Thomson scattering data (electrons), charge exchange data (ions), and a Fokker-Planck model (fast ions); and (3) a safety factor profile, determined from the experimental data using ... continued below

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Pages: 42

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Zurro, B.; Wieland, R.M.; Murakami, M. & Swain, D.W. March 1, 1980.

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A new tokamak data analysis code, ZORNOC, was developed to study noncircular, high beta plasmas in the Impurity Study Experiment (ISX-B). These plasmas exhibit significant flux surface shifts and elongation in both ohmically heated and beam-heated discharges. The MHD equilibrium flux surface geometry is determined by solving the Grad-Shafranov equation based on: (1) the shape of the outermost flux surface, deduced from the magnetic loop probes; (2) a pressure profile, deduced by means of Thomson scattering data (electrons), charge exchange data (ions), and a Fokker-Planck model (fast ions); and (3) a safety factor profile, determined from the experimental data using a simple model (Z/sub eff/ = const) that is self-consistently altered while the plasma equilibrium is iterated. For beam-heated discharches the beam deposition profile is determined by means of a Monte Carlo scheme and the slowing down of the fast ions by means of an analytical solution of the Fokker-Planck equation. The code also carries out an electron power balance and calculates various confinement parameters. The code is described and examples of its operation are given.

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Pages: 42

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Dep. NTIS, PC A03/MF A01.

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  • Report No.: ORNL/TM-7146
  • Grant Number: W-7405-ENG-26
  • DOI: 10.2172/5583696 | External Link
  • Office of Scientific & Technical Information Report Number: 5583696
  • Archival Resource Key: ark:/67531/metadc1092667

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  • March 1, 1980

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  • Feb. 10, 2018, 10:06 p.m.

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  • March 27, 2018, 6:34 p.m.

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Zurro, B.; Wieland, R.M.; Murakami, M. & Swain, D.W. ZORNOC: a 1 1/2-D tokamak data analysis code for studying noncircular high beta plasmas, report, March 1, 1980; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1092667/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.