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Unconventional procedure for inversion of polarimetric data: numerical calculation for a simple model of toroidal plasma

Treść / Zawartość
Identyfikatory
Warianty tytułu
Konferencja
10th International Workshop and Summer School "Towards Fusion Energy", 12-18 June 2011, Kudowa Zdrój, Poland
Języki publikacji
EN
Abstrakty
EN
A gradient method is proposed for inversion of polarimetric data for tokamak plasma. It is assumed that the electron density and the normalized magnetic profile along the ray are known from experiments (scattering and magnetic measurements) in the spirit of the EFIT approach. Under these assumptions the maximum value of the electron density and maximum value of the magnetic field may be estimated by the gradient method. It is shown that with this method it is possible to achieve accuracy of about 0.1% already after 3-4 iterations.
Czasopismo
Rocznik
Strony
37--41
Opis fizyczny
Bibliogr. 11 poz., rys.
Twórcy
autor
  • Institute of Physics, Maritime University of Szczecin, 1/2 Wały Chrobrego Str., Szczecin 70-500, Poland, Tel. +48 914 809 313, Fax: +48 914 809 575, j.chrzanowski@am.szczecin.pl
Bibliografia
  • 1. Briks M, Hawkes NC, Boboc A, Drozdov V, Sharapov SE and JET-EFDA contributors (2008) Accuracy of EFIT equilibrium reconstruction with internal diagnostic information at JET. Rev Sci Instrum 79;10:10F325-1–10F325-4
  • 2. Czyz ZH, Bieg B, Kravtsov YuA (2007) Complex polarization angle: Relation to traditional parameters and application to microwave plasma polarimetry. Phys Lett A 368:101–107
  • 3. Kravtsov YuA, Chrzanowski J (2011) Accuracy of Cotton-Mouton polarimetry in shared toroidal plasma of circular cross-section. Centr Eur J Phys 9;1:123–130
  • 4. Kravtsov YuA, Chrzanowski J, Mazon D (2011) Algorithm for polarimetry data inversion, consistent with other measuring techniques in tokamak plasma. Eur Phys J D 63;1:135–139
  • 5. Kravtsov YuA, Chrzanowski J, Mazon D (2011) Non-conventional procedure of polarimetry data inversion in conditions of comparable Faraday and Cotton-Mouton effects. Fusion Eng Des 86;6/8:1163–1165
  • 6. Lao LL, Ferron JR, Geoebner RJ et al. (1990) Equilibrium analysis of current profiles in tokamaks. Nucl Fusion 30:1035–1059
  • 7. Lao LL, John HSt, Stambaugh RD, Kellman AG, Pfeiffer W (1985) Reconstruction of current profile parameters and plasma shapes in tokamaks. Nucl Fusion 25:1611–1622
  • 8. Li YG, Lotte Ph, Zwingmann W, Gil C, Imbeaux F (2011) EFIT equilibrium reconstruction including polarimetry measurements on tore supra. Fusion Sci Technol 59;2:397–405
  • 9. Magnus R (1973) Iterative methods for solving linear equations. J Optimiz Theory Appl 11;4:323–334
  • 10. Segre SE (2001) New formalism for the analysis of polarization evolution for radiation in a weakly nonuniform, fully anisotropic medium: a magnetized plasma. J Opt Soc Am A 18;10:2601–2606
  • 11.Wesson J (2004) Tokamaks. Clarendon Press, Oxford
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ8-0017-0005
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