Matches in SemOpenAlex for { <https://semopenalex.org/work/W1994474304> ?p ?o ?g. }
- W1994474304 endingPage "B83" @default.
- W1994474304 startingPage "B69" @default.
- W1994474304 abstract "Recent experiments at ASDEX Upgrade have achieved advanced scenarios with high β N (>3) and confinement enhancement over ITER98(y, 2) scaling, H H98y2 = 1.1-1.5, in steady state. These discharges have been obtained in a modified divertor configuration for ASDEX Upgrade, allowing operation at higher triangularity, and with a changed neutral beam injection (NBI) system, for a more tangential, off-axis beam deposition. The figure of merit, β N H ITER89-P , reaches up to 7.5 for several seconds in plasmas approaching stationary conditions. These advanced tokamak discharges have low magnetic shear in the centre, with q on-axis near 1, and edge safety factor, q 95 in the range 3.3-4.5. This q-profile is sustained by the bootstrap current, NBI-driven current and fishbone activity in the core. The off-axis heating leads to a strong peaking of the density profile and impurity accumulation in the core. This can be avoided by adding some central heating from ion cyclotron resonance heating or electron cyclotron resonance heating, since the temperature profiles are stiff in this advanced scenario (no internal transport barrier). Using a combination of NBI and gas fuelling line, average densities up to 80-90% of the Greenwald density are achieved, maintaining good confinement. The best integrated results in terms of confinement, stability and ability to operate at high density are obtained in highly shaped configurations, near double null, with δ = 0.43. At the highest densities, a strong reduction of the edge localized mode activity similar to type II activity is observed, providing a steady power load on the divertor, in the range of 6 MW m -2 , despite the high input power used (> 10 MW)." @default.
- W1994474304 created "2016-06-24" @default.
- W1994474304 creator A5000098697 @default.
- W1994474304 creator A5000282391 @default.
- W1994474304 creator A5002078282 @default.
- W1994474304 creator A5002483541 @default.
- W1994474304 creator A5002628896 @default.
- W1994474304 creator A5002631240 @default.
- W1994474304 creator A5002849911 @default.
- W1994474304 creator A5003927909 @default.
- W1994474304 creator A5004328482 @default.
- W1994474304 creator A5005571010 @default.
- W1994474304 creator A5006055932 @default.
- W1994474304 creator A5006258856 @default.
- W1994474304 creator A5008442059 @default.
- W1994474304 creator A5008538092 @default.
- W1994474304 creator A5008550418 @default.
- W1994474304 creator A5008591706 @default.
- W1994474304 creator A5008925667 @default.
- W1994474304 creator A5010196429 @default.
- W1994474304 creator A5010364847 @default.
- W1994474304 creator A5010523068 @default.
- W1994474304 creator A5010898958 @default.
- W1994474304 creator A5011031930 @default.
- W1994474304 creator A5012826282 @default.
- W1994474304 creator A5013761490 @default.
- W1994474304 creator A5014035122 @default.
- W1994474304 creator A5014946555 @default.
- W1994474304 creator A5015502924 @default.
- W1994474304 creator A5017352704 @default.
- W1994474304 creator A5017385506 @default.
- W1994474304 creator A5018432620 @default.
- W1994474304 creator A5018746599 @default.
- W1994474304 creator A5019676174 @default.
- W1994474304 creator A5019712230 @default.
- W1994474304 creator A5019917556 @default.
- W1994474304 creator A5020512736 @default.
- W1994474304 creator A5020802846 @default.
- W1994474304 creator A5020976595 @default.
- W1994474304 creator A5021482607 @default.
- W1994474304 creator A5022747829 @default.
- W1994474304 creator A5023752300 @default.
- W1994474304 creator A5025068207 @default.
- W1994474304 creator A5025537611 @default.
- W1994474304 creator A5026533721 @default.
- W1994474304 creator A5027594869 @default.
- W1994474304 creator A5028335949 @default.
- W1994474304 creator A5029011234 @default.
- W1994474304 creator A5029239358 @default.
- W1994474304 creator A5029898425 @default.
- W1994474304 creator A5032087126 @default.
- W1994474304 creator A5032778440 @default.
- W1994474304 creator A5033441424 @default.
- W1994474304 creator A5034990726 @default.
- W1994474304 creator A5036358604 @default.
- W1994474304 creator A5036583068 @default.
- W1994474304 creator A5036848176 @default.
- W1994474304 creator A5037165541 @default.
- W1994474304 creator A5037654015 @default.
- W1994474304 creator A5038415304 @default.
- W1994474304 creator A5039405529 @default.
- W1994474304 creator A5042328428 @default.
- W1994474304 creator A5042479406 @default.
- W1994474304 creator A5044280486 @default.
- W1994474304 creator A5044390998 @default.
- W1994474304 creator A5044595265 @default.
- W1994474304 creator A5044620033 @default.
- W1994474304 creator A5044774390 @default.
- W1994474304 creator A5044979431 @default.
- W1994474304 creator A5045141527 @default.
- W1994474304 creator A5045549958 @default.
- W1994474304 creator A5045833630 @default.
- W1994474304 creator A5046986825 @default.
- W1994474304 creator A5047028991 @default.
- W1994474304 creator A5048150322 @default.
- W1994474304 creator A5048636019 @default.
- W1994474304 creator A5048793180 @default.
- W1994474304 creator A5049295813 @default.
- W1994474304 creator A5049386329 @default.
- W1994474304 creator A5049658959 @default.
- W1994474304 creator A5049799692 @default.
- W1994474304 creator A5049821477 @default.
- W1994474304 creator A5050459195 @default.
- W1994474304 creator A5050753118 @default.
- W1994474304 creator A5050801340 @default.
- W1994474304 creator A5052239618 @default.
- W1994474304 creator A5053940401 @default.
- W1994474304 creator A5054676319 @default.
- W1994474304 creator A5055422012 @default.
- W1994474304 creator A5055451327 @default.
- W1994474304 creator A5056953216 @default.
- W1994474304 creator A5057715945 @default.
- W1994474304 creator A5061055825 @default.
- W1994474304 creator A5061582214 @default.
- W1994474304 creator A5062395296 @default.
- W1994474304 creator A5063344546 @default.
- W1994474304 creator A5063489114 @default.
- W1994474304 creator A5063509306 @default.