Magnetic topology effects on Alcator C-Mod flows

Journal Article · Mon May 15 04:00:00 EDT 2006 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2200292· OSTI ID:20783066

Catto, Peter J; Simakov, Andrei N ^[1]

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1. MIT Plasma Science and Fusion Center, Cambridge, Massachusetts 02139 (United States)

The effect of magnetic topology on ion and impurity flows in a tokamak is considered by investigating the consequences of (i) the reversal of toroidal and poloidal magnetic fields and currents; (ii) a switch from lower to upper X-point operation; (iii) poloidal magnetic field or plasma current reversal, and (iv) toroidal magnetic field reversal. The general symmetries associated with magnetic topology changes in tokamaks are employed to demonstrate that the flux surface flows inside and outside the separatrix observed in Alcator C-Mod [I. H. Hutchinson et al., Phys. Plasmas 1, 1511 (1994)] can be used to determine the flow features, including neoclassical and turbulent effects and in the presence of charge exchange.

• OSTI ID: 20783066
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 13; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALCATOR DEVICE
CHARGE EXCHANGE
ELECTRIC CURRENTS
ELECTRON COLLISIONS
ION COLLISIONS
IONS
MAGNETIC FIELD REVERSAL
MAGNETIC FIELDS
MAGNETIC SURFACES
MAGNETOHYDRODYNAMICS
NEOCLASSICAL TRANSPORT THEORY
PLASMA
PLASMA CONFINEMENT
PLASMA IMPURITIES
TOPOLOGY
TURBULENCE