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

Description/Abstract

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.

Creator/Author: La Haye, R.J. ; Chu, M.S. [General Atomics, San Diego, CA (United States)] ; Callen, J.D. [Univ. of Wisconsin, Madison, WI (United States)] [and others]
Publication Date:1996 Oct 01
OSTI Identifier:OSTI ID: 453506; Legacy ID: DE97003362
Report Number(s):GA--A22427; CONF-961005--16
DOE Contract Number:AC03-89ER51114;AC02-76CH03073;FG02-92ER54139
Other Number(s):Other: ON: DE97003362; TRN: 97:006742
Resource Type:Conference
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
Research Org:General Atomics, San Diego, CA (United States); Princeton Univ., NJ (United States). Plasma Physics Lab.; Wisconsin Univ., Madison, WI (United States)
Sponsoring Org: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)
Subject: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
Country of Publication:United States
Language:English
Format: Size: 12 p.
Availability: INIS; OSTI as DE97003362
To purchase this media from NTIS, click here
Update Date:2009 Nov 12

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