The effect of ion orbit loss and X-loss on the interpretation of ion energy and particle transport in the DIII-D edge plasma

Journal Article · Sat Oct 15 00:00:00 EDT 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3640506· OSTI ID:22046963

Stacey, Weston M ^[1]

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1. Fusion Research Center, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)

Calculation models are presented for treating ion orbit loss effects in interpretive fluid transport calculations for the tokamak edge pedestal. Both standard ion orbit loss of particles following trapped or passing orbits across the separatrix and the X-loss of particles that are poloidally trapped in a narrow null-B{sub {theta}} region extending inward from the X-point, where they gradB and curvature drift outward, are considered. Calculations are presented for a representative DIII-D [J. Luxon, Nucl. Fusion 42, 614 (2002)] shot which indicate that ion orbit loss effects are significant and should be taken into account in calculations of present and future experiments.

• OSTI ID: 22046963
• Journal Information: Physics of Plasmas, Vol. 18, Issue 10; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BOUNDARY LAYERS
CHARGED-PARTICLE TRANSPORT
DOUBLET-3 DEVICE
EDGE LOCALIZED MODES
IONS
LOSSES
MAGNETIC CONFINEMENT
ORBITS
PLASMA
TRAPPING