Symplectic Maps for Diverted Plasmas

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Caldas, Ibere Luiz ; Bartoloni, Bruno F. ; Ciro, David ; Roberson, Geraldo ; Schelin, Adriane B. ; Kroetz, Tiago ; Roberto, Marisa ; Viana, Ricardo Luiz ; Iarosz, Kelly Cristiane ; Batista, Antonio Marcos ; Morrison, Philip J.

• Tipo de documento: Artigo Científico
• Fonte: IEEE TRANSACTIONS ON PLASMA SCIENCE; v. 46, n. 7, p. 8-pg., 2018-07-01.

Resumo

Nowadays, divertors are used in the main tokamaks to control the magnetic field and to improve the plasma confinement. In this paper, we present analytical symplectic maps describing Poincare maps of the magnetic field lines in confined plasmas with a single-null poloidal divertor. Initially, we present a divertor map and the tokamap for a diverted configuration. We also introduce the Ullmann map for a diverted plasma, whose control parameters are determined from tokamak experiments. Finally, an explicit, area-preserving, and integrable magnetic field line map for a single-null divertor tokamak is obtained using a trajectory integration method to represent toroidal equilibrium magnetic surfaces. In this method, we also give examples of onset of chaotic field lines at the plasma edge due to resonant perturbations. (AU)

• Processo FAPESP: 12/18073-1 - Transporte simplético em plasmas de fusão com divertor
• Beneficiário: David Ciro Taborda
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 11/19296-1 - Dinâmica não linear
• Beneficiário: Iberê Luiz Caldas
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 15/07311-7 - Comportamento dinâmico de redes neurais
• Beneficiário: Kelly Cristiane Iarosz
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado