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Author(s):
T. Hayashi, T. Sato and A. Takei
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Title:
Three Dimensional Studies of Helical Equilibria adn Magnetic Surface Breaking Due to the Finite Beta Effect
Date of publication:
Feb. 1990
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Key words:
helical system, stellarator, equilibrium, magnetic surface, finite beta effect, ergodic region, computer simulation, three dimensional equilibrium code, magnetic surface breaking
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Abstract:
Three dimensional equilibrium and breaking of magnetic surfaces due to the finite beta effect in a 1=2 heliotron/torsatron configuration are studied by using a newly developed three-dimensional equilibrium code. The breaking is significantly suppressed as gamma_ c (pitch parameter) becomes smaller. An inward shift of the plasma by using the vertical field and elliptic (vertical) shaping using the quadrupole field can also suppress the breaking.
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