Tokamak magnetic field lines described by simple maps


Autoria(s): Portela, Jefferson Stafusa Elias; Caldas, Ibere Luiz; Viana, Ricardo Luiz
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

20/10/2012

20/10/2012

2008

Resumo

The magnetic field line structure in a tokamak can be obtained by direct numerical integration of the field line equations. However, this is a lengthy procedure and the analysis of the solution may be very time-consuming. Otherwise we can use simple two-dimensional, area-preserving maps, obtained either by approximations of the magnetic field line equations, or from dynamical considerations. These maps can be quickly iterated, furnishing solutions that mirror the ones obtained from direct numerical integration, and which are useful when long-term studies of field line behavior are necessary (e.g. in diffusion calculations). In this work we focus on a set of simple tokamak maps for which these advantages are specially pronounced.

Identificador

EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, v.165, p.195-210, 2008

1951-6355

http://producao.usp.br/handle/BDPI/29069

10.1140/epjst/e2008-00863-y

http://dx.doi.org/10.1140/epjst/e2008-00863-y

Idioma(s)

eng

Publicador

EDP SCIENCES S A

Relação

European Physical Journal-special Topics

Direitos

restrictedAccess

Copyright EDP SCIENCES S A

Palavras-Chave #INTERNAL TRANSPORT BARRIERS #STANDARD NONTWIST MAP #NULL DIVERTOR TOKAMAKS #MANIFOLD RECONNECTION #HAMILTONIAN-SYSTEMS #TOROIDAL GEOMETRY #REVERSED SHEAR #TWIST MAPS #DYNAMICS #DIFFUSION #Physics, Multidisciplinary
Tipo

article

proceedings paper

publishedVersion