Particle balance in a TFTR supershot

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:5361071

Budny, R V; Coster, D; Stotler, D; Bell, M G; Janos, A C; Owens, D K

Particle balance in a TFTR supershot is studied self-consistently. The TRANSP analysis code is used to model plasma parameters within the last closed flux surface, deriving time-dependent plasma profiles from measurements. The poloidal flux surfaces are derived using TRANSP and an equivalent-filament analysis code which distributes axisymmetric currents to match measurements of the poloidal field and flux and the total plasma current. The plasma in the edge and scrape off regions are modeled during a relatively steady state phase of the neutral beam injection using the B2 code which calculates plasma profiles in 2 dimensions. The recycled hydrogenic neutrals from the limiter are modeled with the DEGAS neutrals code. The recycling rates within the last closed flux surface are input into TRANSP. The edge and scrape off modeling results are compared with those from TRANSP in the main plasma and with measurements of the D{sub {alpha}} emission and thermocouple measurements of temperature increases in the inner limiter. The recycling coefficients at the last closed flux surface and at the limiter are discussed.

• Research Organization: Princeton Univ., NJ (United States). Plasma Physics Lab.
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 5361071
• Report Number(s): PPPL-CFP-2602; CONF-920311--7; ON: DE92012672
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700330 -- Plasma Kinetics
Transport
& Impurities-- (1992-)
700420* -- Fusion Technology-- Plasma-Facing Components-- (1992-)
BOUNDARY LAYERS
CHARGED-PARTICLE TRANSPORT THEORY
CLOSED PLASMA DEVICES
ENERGY BALANCE
FIRST WALL
IMPURITIES
IONIZATION
LAYERS
LIMITERS
PLASMA DENSITY
PLASMA IMPURITIES
PLASMA SCRAPE-OFF LAYER
TEMPERATURE DISTRIBUTION
TFTR TOKAMAK
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTOR WALLS
TOKAMAK DEVICES
TRANSPORT THEORY