Geodesic
Solution of the inverse problem for the Grad--Shafranov equation for magnetic field computation in tokamak
Matematičeskoe modelirovanie, Tome 26 (2014) no. 11, pp. 57-64.

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The paper suggests a method of solving the inverse problem for the Grad–Shafranov equation with affine right-hand side with non-local condition in cross section of tokamaks and more general domains. A similar problem appears in computation of magnetic field within conventional model of tokamaks. A well-posed statement of the inverse problem is given. Necessary and sufficient conditions of its solvability are set. The used multipole method provided the relative error of the solution and its gradient on the boundary less than $10^{-9}$ by the use of about $100$ degrees of freedom.
Keywords: Grad–Shafranov equation, inverse problem, magnetic field computation
Mots-clés : non-local condition, tokamak, multipole method. 
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S. I. Bezrodnykh; V. I. Vlasov. Solution of the inverse problem for the Grad--Shafranov equation for magnetic field computation in tokamak. Matematičeskoe modelirovanie, Tome 26 (2014) no. 11, pp. 57-64. http://geodesic.mathdoc.fr/item/MM_2014_26_11_a8/

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