Achievement of reactor-relevantβin low-qdivertor discharges in the doublet III-D tokamak
- 13 March 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 62 (11) , 1278-1281
- https://doi.org/10.1103/physrevlett.62.1278
Abstract
A volume average toroidal β of 6.2% has been obtained with 10 MW of hydrogen neutral beam injection into deuterium divertor discharges in DIII-D. High-β discharges were maintained quiescently for many energy confinement times in elongated, κ=2, divertor discharges where the safety factor at the 95% flux surface was near 2. The maximum β calculated to be stable against ideal kinks and ideal ballooning modes is 8.5%–9.5%, confirming that these I/aB≊2.5 MA/m T discharges are some distance below the stability limit.Keywords
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