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Title: Integrable perturbed magnetic fields in toroidal geometry: An exact analytical flux surface label for large aspect ratio

An analytical description of magnetic islands is presented for the typical case of a single perturbation mode introduced to tokamak plasma equilibrium in the large aspect ratio approximation. Following the Hamiltonian structure directly in terms of toroidal coordinates, the well known integrability of this system is exploited, laying out a precise and practical way for determining the island topology features, as required in various applications, through an analytical and exact flux surface label.
Authors:
; ; ;  [1]
  1. Department of Physics, Aristotle University of Thessaloniki, GR-54124 Thessaloniki (Greece)
Publication Date:
OSTI Identifier:
22304064
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 6; Other Information: (c) 2014 Euratom; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APPROXIMATIONS; ASPECT RATIO; HAMILTONIANS; MAGNETIC FIELDS; MAGNETIC ISLANDS; MAGNETIC SURFACES; TOKAMAK DEVICES