Stabilization and onset of sawteeth in TFTR

Journal Article · Mon May 02 04:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.2895· OSTI ID:7206550

Levinton, F M; Zakharov, L; Batha, S H; Manickam, J; Zarnstorff, M C ^[1]

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1. Fusion Physics and Technology, Torrance, California 90503-1673 (United States) Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451 (United States)

Measurements from the Tokamak Fusion Test Reactor (TFTR) of the [ital q] profile using motional Stark effect polarimetry and the pressure profiles have allowed detailed comparison of both supershots and [ital L]-mode discharges to theoretical models describing the stability of sawteeth. In TFTR supershots sawteeth are usually absent, whereas in [ital L]-mode discharges they are generally present, and in both cases [ital q](0) is less than 1. It has been found that the [omega][sup *]-stabilization criterion of the two-fluid collisionless [ital m]=1 reconnection mode agrees very well with the presence or absence of sawteeth in TFTR and no beta limits to the sawtooth stabilization have been observed.

• DOE Contract Number: AC02-76CH03073
• OSTI ID: 7206550
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:18; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700310 -- Plasma Confinement-- (1992-)
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
CLOSED PLASMA DEVICES
DATA
EXPERIMENTAL DATA
INFORMATION
NUMERICAL DATA
OSCILLATIONS
PLASMA PRESSURE
POLARIMETERS
SAWTOOTH OSCILLATIONS
SHEAR
STARK EFFECT
TFTR TOKAMAK
THERMONUCLEAR DEVICES
TOKAMAK DEVICES