Divertor map with freedom of geometry and safety factor profile
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
22/10/2013
22/10/2013
2012
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| Resumo |
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 equilibrium magnetic surfaces. The magnetic surfaces obtained from the map are capable of fitting different geometries with freely specified position of the X-point, by varying free model parameters. The safety factor profile of the map is independent of the geometric parameters and can also be chosen arbitrarily. The divertor integrable map is composed of a nonintegrable map that simulates the effect of external symmetry-breaking resonances, so as to generate a chaotic region near the separatrix passing through the X-point. The composed field line map is used to analyze escape patterns (the connection length distribution and magnetic footprints on the divertor plate) for two equilibrium configurations with different magnetic shear profiles at the plasma edge. CNPq CNPq FAPESP FAPESP CAPES CAPES CNEN (Brazilian Fusion Network) CNEN (Brazilian Fusion Network) US Department of Energy US Department of Energy [DE-FG05-80ET-53088] |
| Identificador |
PLASMA PHYSICS AND CONTROLLED FUSION, BRISTOL, v. 54, n. 4, supl. 4, Part 1-2, pp. 899-905, APR, 2012 0741-3335 http://www.producao.usp.br/handle/BDPI/35448 10.1088/0741-3335/54/4/045007 |
| Idioma(s) |
eng |
| Publicador |
IOP PUBLISHING LTD BRISTOL |
| Relação |
PLASMA PHYSICS AND CONTROLLED FUSION |
| Direitos |
restrictedAccess Copyright IOP PUBLISHING LTD |
| Palavras-Chave | #X-POINT GEOMETRY #TOKAMAK DIVERTOR #ERGODIC LIMITERS #FIELD LINES #SIMULATIONS #TRANSPORT #MAPPINGS #PHYSICS, FLUIDS & PLASMAS #PHYSICS, NUCLEAR |
| Tipo |
article original article publishedVersion |
