Edge effects during DIII-D divertor biasing

Conference · Tue Sep 01 04:00:00 EDT 1992

OSTI ID:6747430

Schaffer, M J; Greene, K L; Groebner, R J; Hinton, F L; Hyatt, A W; Lao, L L; Leuer, J A; Lippmann, S I; Mahdavi, M A; Osborne, T H; Petrie, T W; Smith, J P; Staebler, G M; Stambaugh, R D ^[1]; Buchenauer, D; Cuthbertson, J W; Watkins, J G ^[2]; Ellis, R; Hill, D N; Rensink, M E ^[3]

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1. General Atomics, San Diego, CA (United States)
2. Sandia National Labs., Albuquerque, NM (United States)
3. Lawrence Livermore

Results of experiments with a toroidal ring bias electrode in contact with the single-null diverter scrape-off layer (SOL) in the DIII-D tokamak are reviewed, and new results and analysis are presented. Topics included are: current flow in the SOL and diverter private flux; SOL density resistance; driven SOL and diverter E [times] B plasma flows; bias-aided diverter exhaust; SOL density control and impurity shielding; ELM effects on SOL electrical circuit; diverter and SOL heat flux modification; effect of DIII-D formation by the magnetized divertor electrode.

• Research Organization: General Atomics, San Diego, CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-89ER51114; FG03-89ER51121; W-7405-ENG-48; AC04-76DP00789; AC05-84OR21400; AC03-89ER53277
• OSTI ID: 6747430
• Report Number(s): GA-A-21064; CONF-9209181--5; ON: DE93005847
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700420* -- Fusion Technology-- Plasma-Facing Components-- (1992-)
BOUNDARY LAYERS
CLOSED PLASMA DEVICES
CONFINEMENT
DIVERTORS
DOUBLET-3 DEVICE
EDGE LOCALIZED MODES
H-MODE PLASMA CONFINEMENT
HEAT FLUX
IMPURITIES
INSTABILITY
LAYERS
PLASMA CONFINEMENT
PLASMA IMPURITIES
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA SCRAPE-OFF LAYER
THERMONUCLEAR DEVICES
TOKAMAK DEVICES