Technical Physics Letters
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- 2022
Improved FCDI algorithm for tokamak plasma equilibrium reconstruction
Korenev P. S.
1,2, Konkov A. E.
1,2, Mitrishkin Y. V.
1,2, Balachenkov I. M.3, Kiselev E. O.3, Minaev V. B.3, Sakharov N. V.3, Petrov Yu. V.3
1Lomonosov Moscow State University, Moscow, Russia
2Trapeznikov Institute of Control Sciences, Russian Academy of Sciences, Moscow, Russia
3Ioffe Institute, St. Petersburg, Russia
2Trapeznikov Institute of Control Sciences, Russian Academy of Sciences, Moscow, Russia
3Ioffe Institute, St. Petersburg, Russia
Email: pkorenev@ipu.ru, konkov@physics.msu.ru
The paper presents the improved FCDI plasma equilibrium reconstruction algorithm implemented at the Globus-M2 tokamak. The algorithm has been improved to be able to operate in real time. The FCDI-FF (Fixed Filaments) operation mode was added, in which the plasma is modeled by current filaments at fixed positions. New user interface for the algorithm displays reconstructed plasma separatrix and contours of the internal magnetic surfaces, the poloidal flux distribution, and graphs of the reconstructed plasma parameters, including profiles of plasma pressure, poloidal current and safety factor q, plasma energy, poloidal beta and internal inductance, which can be exported in *.mat, *.json and G-eqdsk formats. Keywords: tokamak, equilibrium reconstruction, plasma shape.
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