Transport simulations of a density limit in radiation-dominated tokamak discharges: Profile effects

Technical Report · Wed Jun 01 00:00:00 EDT 1988

DOI:https://doi.org/10.2172/7020645· OSTI ID:7020645

Stotler, D P

The density limit observed in tokamak experiments is thought to be due to a radiative collapse of the current channel. A transport code coupled with an MHD equilibrium routine is used to determine the detailed, self-consistent evolution of the plasma profiles in tokamak discharges with radiated power close to or equalling the input power. The present work is confined to ohmic discharges in steady state. It is found that the shape of the density profile can have a significant impact on the variation of the maximum electron density with plasma current. Analytic calculations confirm this result. 41 refs., 9 figs.

• Research Organization: Princeton Univ., NJ (USA). Plasma Physics Lab.
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 7020645
• Report Number(s): PPPL-2531; ON: DE88012996
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700103* -- Fusion Energy-- Plasma Research-- Kinetics
ANALYTICAL SOLUTION
CALCULATION METHODS
CLOSED PLASMA DEVICES
ELECTRON TEMPERATURE
EQUILIBRIUM
MHD EQUILIBRIUM
PLASMA DENSITY
PLASMA SIMULATION
SIMULATION
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TRANSPORT THEORY