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Simulation of Edge Plasmas in DIII-D Double-Null Configurations.

DE200415006867

Publication Date	2001
Personal Author	Rensink, M. E.; Lasnier, C. J.; Petrie, T. W.; Porter, G. D.; Rognlien, T. D.
Page Count	12
Abstract	We present fluid model simulation results for the edge plasma in the DIII-D tokamak with unbalanced double-null magnetic configurations, including cross field drifts. Input parameters are typical of low-power operation in DIII-D. For high-recycling the plasma tends to be detached from all divertor plates. Midplane plasma and electric field profiles are relatively insensitive to the magnetic imbalance. Divertor heat flux profiles exhibit sharp peaks due to cross-field drifts when the ion grad-B drift direction is away from the x-point toward the magnetic axis.
Keywords	Fluid model simulations Edge plasmas Divertors Doublet-3 device Electric fields Heat flux Plasma Plates Simulations DIII-D tokamak Double-null configurations
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200418

Simulation of Edge Plasmas in DIII-D Double-Null Configurations.

Simulation of Edge Plasmas in DIII-D Double-Null Configurations.
DE200415006867

Publication Date	2001
Personal Author	Rensink, M. E.; Lasnier, C. J.; Petrie, T. W.; Porter, G. D.; Rognlien, T. D.
Page Count	12
Abstract	We present fluid model simulation results for the edge plasma in the DIII-D tokamak with unbalanced double-null magnetic configurations, including cross field drifts. Input parameters are typical of low-power operation in DIII-D. For high-recycling the plasma tends to be detached from all divertor plates. Midplane plasma and electric field profiles are relatively insensitive to the magnetic imbalance. Divertor heat flux profiles exhibit sharp peaks due to cross-field drifts when the ion grad-B drift direction is away from the x-point toward the magnetic axis.
Keywords	Fluid model simulations Edge plasmas Divertors Doublet-3 device Electric fields Heat flux Plasma Plates Simulations DIII-D tokamak Double-null configurations
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200418