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IOP Publishing, Plasma Physics and Controlled Fusion, 12(51), p. 124031, 2009

DOI: 10.1088/0741-3335/51/12/124031

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Helical equilibria and magnetic structures in the reversed field pinch and analogies to the tokamak and stellarator

Journal article published in 2009 by M. E. Puiatti, Puiatti Me, Alberto Alfier, F. Auriemma ORCID, S. Cappello, L. Carraro, R. Cavazzana, Dal S. Bello, S. Dal Bello, A. Fassina, D. F. Escande, P. Franz, M. Gobbin, P. Innocente, R. Lorenzini and other authors.
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This paper is available in a repository.

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Abstract

The reversed field pinch configuration is characterized by the presence of magnetic structures both in the core and at the edge: in the core, at high plasma current the spontaneous development of a helical structure is accompanied by the appearance of internal electron transport barriers; at the edge strong pressure gradients, identifying an edge transport barrier, are observed too, related to the position of the field reversal surface. The aim of this paper is the experimental characterization of both the internal and edge transport barriers in relation to the magnetic topology, discussing possible analogies and differences with other confinement schemes.