q measurements during sawtooth oscillations in a low q tokamak

Journal Article · Wed Nov 01 04:00:00 EST 1989 · Physics of Fluids B: Plasma Physics; (USA)

DOI:https://doi.org/10.1063/1.859078· OSTI ID:5244694

Moyer, R A; Goetz, J A; Dexter, R N; Prager, S C ^[1]

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1. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (US)

The central safety factor during a sawtooth oscillation in material limiter tokamak discharges (scrapeoff plates inserted to the separatrix) in the TOKAPOLE II poloidal divertor tokamak (Phys. Rev. Lett. {bold 49}, 734 (1982)) is measured to be significantly less than 1 (approximately 0.7) during a sawtooth oscillation. This result is identical to that observed earlier in the same device in magnetic limiter discharges. Thus the presence of scrapeoff plasma beyond the divertor separatrix is not responsible for the absence of total reconnection.

• OSTI ID: 5244694
• Journal Information: Physics of Fluids B: Plasma Physics; (USA), Journal Name: Physics of Fluids B: Plasma Physics; (USA) Vol. 1:11; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
700108 -- Fusion Energy-- Plasma Research-- Wave Phenomena
CLOSED PLASMA DEVICES
CONFIGURATION
CYLINDRICAL CONFIGURATION
DIVERTORS
ELECTRIC DISCHARGES
INTERNAL RING DEVICES
LIMITERS
MAGNETIC FLUX
OSCILLATIONS
PLASMA
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TOKAPOLE DEVICES