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| Titel: |
Plasma reconstruction in tokamaks with linearized approaches |
| Auteur: |
Albanese, R. Artaserse, G. Mattei, M. Tudisco, O. JET – EFDA Contributors, |
| Verschenen in: |
International journal of applied electromagnetics and mechanics |
| Paginering: | Jaargang 26 (2007) nr. 3-4 pagina's 191-199 |
| Jaar: |
2007-09-18 |
| Inhoud: |
This paper deals with the problem of the equilibrium reconstruction in a tokamak. We firstly describe two approaches for the shape reconstruction: the former based on a nonlinear least square minimization with Finite Element Method modelling taking into account the Grad Shafranov equilibrium equation; the latter based on linear multifilament models accounting for the presence of iron, eddy currents in the passive structures, and plasma. A possible unified treatment for shape and current profile reconstruction using both internal and external measurements is then discussed: the nonlinear least square minimization procedure used for shape identification is modified to account for internal measurements and profile shape fitting. A linearized approach is finally analysed making use of Singular Value Decomposition theory. Some results on the JET tokamak are shown and discussed. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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