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

Technical Report · Sat Mar 01 00:00:00 EST 1980

DOI:https://doi.org/10.2172/5583696· OSTI ID:5583696

Zurro, B.; Wieland, R. M.; Murakami, M.; Swain, D. W.

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.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5583696
• Report Number(s): ORNL/TM-7146; TRN: 80-007226
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COMPUTER CODES
Z CODES
ISX TOKAMAK
MAGNETIC FLUX
ENERGY BALANCE
HIGH-BETA PLASMA
MAGNETOHYDRODYNAMICS
MONTE CARLO METHOD
ONE-DIMENSIONAL CALCULATIONS
FLUID MECHANICS
HYDRODYNAMICS
MECHANICS
PLASMA
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
700105* - Fusion Energy- Plasma Research- Plasma Kinetics-Theoretical- (-1987)