Achievement of reactor-relevant. beta. in low-q divertor discharges in the doublet III-D tokamak

Journal Article · Mon Mar 13 00:00:00 EST 1989 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.62.1278· OSTI ID:6391353

Taylor, T S; Strait, E J; Lao, L; Kellman, A G; Osborne, T H; Burrell, K; Chu, M S; DeBoo, J C; Fukumoto, H; Gohil, P; others, and

A volume average toroidal ..beta.. of 6.2% has been obtained with 10 MW of hydrogen neutral beam injection into deuterium divertor discharges in DIII-D. High-..beta.. discharges were maintained quiescently for many energy confinement times in elongated, kappa = 2, divertor discharges where the safety factor at the 95% flux surface was near 2. The maximum ..beta.. calculated to be stable against ideal kinks and ideal ballooning modes is 8.5%--9.5%, confirming that these I/aBapprox. =2.5 MA/m T discharges are some distance below the stability limit.

• Research Organization: General Atomics, San Diego, California 92138
• OSTI ID: 6391353
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 62:11
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
HIGH-BETA PLASMA
BETA RATIO
TOKAMAK DEVICES
PLASMA HEATING
BALLOONING INSTABILITY
DEUTERIUM
DIVERTORS
HYDROGEN
KINK INSTABILITY
NEUTRAL ATOM BEAM INJECTION
BEAM INJECTION
CLOSED PLASMA DEVICES
ELEMENTS
HEATING
HYDROGEN ISOTOPES
INSTABILITY
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
ODD-ODD NUCLEI
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PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
STABLE ISOTOPES
THERMONUCLEAR DEVICES
700101* - Fusion Energy- Plasma Research- Confinement
Heating
& Production