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Tokamak discharge simulation coupling freeboundary equilibrium and plasma model with application to JT-60SA

Abstract : In order to simulate a full tokamak discharge, a fast integrated tokamak modelling tool for scenario design, METIS, is coupled with a quasi-static free-boundary magnetic equilibrium code, FEEQS. The first code is able to compute at each time the plasma equilibrium, the current density and plasma pressure profiles. The generated outputs are iteratively used by the second code that computes the poloidal field coils currents needed in order to obtain a given plasma shape. This is used to assess the feasibility of scenarios designed by integrated modelling simulations. This approach is much faster with respect to full simulators, equipped with specific feedback controllers, and can be regarded as complementary or preparatory to much more timeconsuming scenario control optimisation. The results obtained with the equilibrium code are benchmarked with data already available and computed using the TOSCA code. To illustrate how the coupled codes work, the optimization of one of the reference scenarios of the JT-60SA tokamak is carried out. The use of this new simulation tool for tokamak scenario design is discussed.
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Submitted on : Thursday, July 15, 2021 - 1:49:01 PM
Last modification on : Thursday, September 30, 2021 - 2:35:37 PM
Long-term archiving on: : Saturday, October 16, 2021 - 6:31:20 PM

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V. Ostuni, Jean François Artaud, G. Giruzzi, Emmanuel Joffrin, Holger Heumann, et al.. Tokamak discharge simulation coupling freeboundary equilibrium and plasma model with application to JT-60SA. Nuclear Fusion, IOP Publishing, 2021, 61, pp.026021. ⟨10.1088/1741-4326/abcdb7⟩. ⟨cea-03287071⟩

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