https://doi.org/10.1140/epjd/e2011-20078-3
Regular Article
Algorithm for polarimetry data inversion, consistent with other measuring techniques in tokamak plasma
1
Space Research Institute, Profsoyuznaya St. 82/34, 117997
Moscow,
Russia
2
Institute of Physics, Maritime University of
Szczecin, 1-2 Waly
Chrobrego, Szczecin
70-500,
Poland
3
Association Euratom/CEA, CEA Cadarache DSM/IRFM,
13108
St.Paul-lez-Durance Cedex,
France
4
JET, Culham, UK
a e-mail: j.chrzanowski@am.szczecin.pl
Received:
31
January
2011
Received in final form:
14
April
2011
Published online:
9
June
2011
New procedure for plasma polarimetry data inversion is suggested, which fits two parameter knowledge-based plasma model to the measured parameters (azimuthal and ellipticity angles) of the polarization ellipse. The knowledge-based model is supposed to use the magnetic field and electron density profiles, obtained from magnetic measurements and LIDAR data on the Thomson scattering. In distinction to traditional polarimetry, polarization evolution along the ray is determined on the basis of angular variables technique (AVT). The paper contains a few examples of numerical solutions of these equations, which are applicable in conditions, when Faraday and Cotton-Mouton effects are simultaneously strong.
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2011
