Practical beta limit in ITER-shaped discharges in DIII-D and its increase by higher collisionality

Conference · Tue Oct 01 00:00:00 EDT 1996

OSTI ID:453506

La Haye, R J; Chu, M S ^[1]; Callen, J D ^[2]

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1. General Atomics, San Diego, CA (United States)
2. Univ. of Wisconsin, Madison, WI (United States); and others

The maximum beta which can be sustained for a long pulse in ITER-shaped plasmas in DIII-D with q{sub 95} {approx_gt} 3, ELMs, and sawteeth is found to be limited by resistive tearing modes, particularly m/n = 3/2 and 2/1. At low collisionality comparable to that which will occur in ITER, the beta limit is a factor of two below the usually expected n = {infinity} ballooning and n = 1 kink ideal limits.

• Research Organization: General Atomics, San Diego, CA (United States); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Univ. of Wisconsin, Madison, WI (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States); Association Euratom, Brussels (Belgium); Swiss National Science Foundation, Bern (Switzerland); Department of Trade and Industry, London (United Kingdom)
• DOE Contract Number: AC03-89ER51114; AC02-76CH03073; FG02-92ER54139
• OSTI ID: 453506
• Report Number(s): GA-A22427; CONF-961005-16; ON: DE97003362; TRN: 97:006742
• Resource Relation: Conference: 16. International Atomic Energy Agency (IAEA) international conference on plasma physics and controlled nuclear fusion research, Montreal (Canada), 7-11 Oct 1996; Other Information: PBD: Oct 1996
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
DOUBLET-3 DEVICE
BETA RATIO
ITER TOKAMAK
EDGE LOCALIZED MODES
SAWTOOTH OSCILLATIONS
TEARING INSTABILITY
BALLOONING INSTABILITY
KINK INSTABILITY
MHD EQUILIBRIUM