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Title: Amplification of S-1 Spheromak current by an inductive current transformer

Technical Report ·
DOI:https://doi.org/10.2172/6294044· OSTI ID:6294044

We attempt to predict the consequences of adding an inductive current transformer (OH Transformer) to the present S-1 Spheromak experiment. Axisymmetric modeling with only classical dissipation shows an increase of toroidal current and a shrinking and hollowing of the current channel, conserving toroidal flux. These unstable profiles will undergo helical reconnection, conserving helicity K = ..integral.. A-vector x B-vector d tau while increasing the toroidal flux and decreasing the poloidal flux so that the plasma relaxes toward the Taylor state. This flux rearrangement is modeled by a new current viscosity term in the mean-field Ohm's law which conserves helicity and dissipates energy.

Research Organization:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
DOE Contract Number:
AC02-76CH03073
OSTI ID:
6294044
Report Number(s):
PPPL-2279; ON: DE86005039
Country of Publication:
United States
Language:
English