Very small aspect ratio tokamaks

Conference · Sun Jan 01 04:00:00 EST 1978

OSTI ID:6576500

Peng, Y K.M.; Dory, R A

Magnetohydrodynamic (MHD) stability analyses are carried out for tokamak equilibria with A = 2.0 and 1.5 q(boundary)/q(axis) approximately equal to 2, and ..beta../sub p/ approximately equal to A/2. When a conducting wall is at a distance 0.2a from the plasma with A = 1.5, the critical anti ..beta../sub t/(= 8..pi..p/B/sub to/) values are found to be 0.47, 0.37, and 0.33 for toroidal mode numbers N = 1, 2, and 3, respectively. A linear extrapolation in 1/N ..-->.. 0 results in a anti beta/sub tc/ of 0.28, which is consistent with the results based on analyses of large N ballooning modes on each flux surface. For the case of A = 2.0, anti ..beta../sub tc/ values on plasma parameters are quantified together with suggested approaches to produce the plasma via adiabatic compression.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6576500
• Report Number(s): CONF-780811-32
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107 -- Fusion Energy-- Plasma Research-- Instabilities
700200* -- Fusion Energy-- Fusion Power Plant Technology
ASPECT RATIO
CLOSED PLASMA DEVICES
EQUILIBRIUM
EQUILIBRIUM PLASMA
FLUID MECHANICS
HYDRODYNAMICS
INSTABILITY
MAGNETOHYDRODYNAMICS
MECHANICS
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES