Reconstruction of equilibrium magnetic configurations in the Globus-M spherical tokamak

Journal Article · Tue Dec 15 00:00:00 EST 2015 · Plasma Physics Reports

DOI:https://doi.org/10.1134/S1063780X15120120· OSTI ID:22472015

Voronin, A. V.; Gusev, V. K. ^[1]; Kavin, A. A.; Kamenshchikov, S. N.; Lobanov, K. M. ^[2]; Minaev, V. B.; Novokhatsky, A. N.; Petrov, Yu. V.; Shchegolev, P. B. ^[1]

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1. Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation)
2. Efremov Research Institute of Electrophysical Apparatus (Russian Federation)

The results of reconstruction of equilibrium magnetic configurations in the Globus-M spherical tokamak by means of the EFIT code and by the method of movable filaments with the use of the data from magnetic measurements are compared. The EFIT code allows one to completely reconstruct the magnetic configuration by solving the Grad−Shafranov equation. In the method of movable filaments, the distribution of the toroidal current flowing through the plasma is described by a set of infinitely thin current-carrying rings. In this method, the last closed magnetic surface (LCMS) and the open surfaces lying beyond the LCMS are calculated. Using both methods, the coordinates of the regions where the separatrix strikes the divertor plates were determined. The results obtained agree well with the distributions of the temperature over the tungsten divertor tiles measured using an IR camera.

• OSTI ID: 22472015
• Journal Information: Plasma Physics Reports, Vol. 41, Issue 12; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CAMERAS
COMPARATIVE EVALUATIONS
DIVERTORS
E CODES
ELECTRIC CURRENTS
EQUILIBRIUM
GLOBUS-M SPHEROMAK
GRAD-SHAFRANOV EQUATION
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC SURFACES
PLASMA
PLASMA FILAMENT
PLATES
SURFACES
TUNGSTEN