skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Profile optimization and high beta discharges and stability of high elongation plasmas in the DIII-D tokamak

Abstract

The maximum experimental volume average toroidal beta in DIII-D scales with the plasma current divided by the plasma minor radius and the toroidal field, {beta}{sub T} {proportional to} I/aB. {beta}{sub T} = 11% has been achieved at high normalized current by operating at high plasma elongation, {kappa} = 2.3, and high triangularity, {delta} = 0.8, near the axisymmetric stability limit. In a limited range of I/aB, {beta}{sub T}(%) = 5I/aB (MA/m/T) has been obtained. Stability calculations indicate that the high beta stability limit depends on the profiles of the current density, and the pressure. 37 refs., 7 figs., 1 tab.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1];  [2];  [3];  [4]
  1. General Atomics, San Diego, CA (USA)
  2. Oak Ridge National Lab., TN (USA)
  3. Japan Atomic Energy Research Inst., Tokyo (Japan)
  4. Ecole Polytechnique Federa
Publication Date:
Research Org.:
General Atomics, San Diego, CA (USA)
Sponsoring Org.:
DOE/ER
OSTI Identifier:
6194284
Report Number(s):
GA-A-20283; CONF-901025-46; IAEA-CN-53/A-3-1
ON: DE91008921; TRN: 91-006802
DOE Contract Number:  
AC03-89ER51114
Resource Type:
Conference
Resource Relation:
Conference: 13. international conference on plasma physics and controlled nuclear fusion research, Washington, DC (USA), 1-6 Oct 1990
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DOUBLET REACTORS; AXIAL SYMMETRY; PLASMA INSTABILITY; BEAM INJECTION HEATING; CONFINEMENT TIME; CURRENT DENSITY; HIGH-BETA PLASMA; MHD EQUILIBRIUM; OPTIMIZATION; PLASMA RADIAL PROFILES; EQUILIBRIUM; HEATING; INSTABILITY; PLASMA; PLASMA HEATING; SYMMETRY; THERMONUCLEAR REACTORS; TOKAMAK TYPE REACTORS; 700107* - Fusion Energy- Plasma Research- Instabilities

Citation Formats

Taylor, T S, Chu, M S, Ferron, J R, Helton, F J, Howl, W, Jackson, G L, Jensen, T H, Kellman, A G, Lao, L L, La Haye, R J, Leuer, J A, Osborne, T H, Snider, R, Stambaugh, R D, Strait, E J, Turnbull, A D, Lazarus, E A, Kamada, Y, and Lister, J B. Profile optimization and high beta discharges and stability of high elongation plasmas in the DIII-D tokamak. United States: N. p., 1991. Web.
Taylor, T S, Chu, M S, Ferron, J R, Helton, F J, Howl, W, Jackson, G L, Jensen, T H, Kellman, A G, Lao, L L, La Haye, R J, Leuer, J A, Osborne, T H, Snider, R, Stambaugh, R D, Strait, E J, Turnbull, A D, Lazarus, E A, Kamada, Y, & Lister, J B. Profile optimization and high beta discharges and stability of high elongation plasmas in the DIII-D tokamak. United States.
Taylor, T S, Chu, M S, Ferron, J R, Helton, F J, Howl, W, Jackson, G L, Jensen, T H, Kellman, A G, Lao, L L, La Haye, R J, Leuer, J A, Osborne, T H, Snider, R, Stambaugh, R D, Strait, E J, Turnbull, A D, Lazarus, E A, Kamada, Y, and Lister, J B. Fri . "Profile optimization and high beta discharges and stability of high elongation plasmas in the DIII-D tokamak". United States.
@article{osti_6194284,
title = {Profile optimization and high beta discharges and stability of high elongation plasmas in the DIII-D tokamak},
author = {Taylor, T S and Chu, M S and Ferron, J R and Helton, F J and Howl, W and Jackson, G L and Jensen, T H and Kellman, A G and Lao, L L and La Haye, R J and Leuer, J A and Osborne, T H and Snider, R and Stambaugh, R D and Strait, E J and Turnbull, A D and Lazarus, E A and Kamada, Y and Lister, J B},
abstractNote = {The maximum experimental volume average toroidal beta in DIII-D scales with the plasma current divided by the plasma minor radius and the toroidal field, {beta}{sub T} {proportional to} I/aB. {beta}{sub T} = 11% has been achieved at high normalized current by operating at high plasma elongation, {kappa} = 2.3, and high triangularity, {delta} = 0.8, near the axisymmetric stability limit. In a limited range of I/aB, {beta}{sub T}(%) = 5I/aB (MA/m/T) has been obtained. Stability calculations indicate that the high beta stability limit depends on the profiles of the current density, and the pressure. 37 refs., 7 figs., 1 tab.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {2}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: