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Automating the design of tokamak experiment scenarios

Abstract : The real-time control of plasma position, shape and current in a tokamak has to beensured by a number of electrical circuits consisting of voltage suppliers and axisymmetric coils.Finding good target voltages/currents for the control systems is a very laborious, non-trivial taskdue to non-linear effects of plasma evolution. We introduce here an optimal control formulationto tackle this task and present in detail the main ingredients for finding numerical solutions:the finite element discretization, accurate linearizations and Sequential Quadratic Programming.Case studies for the tokamaks WEST and HL-2M highlight the flexibility and broad scope of theproposed optimal control formulation.
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https://hal.archives-ouvertes.fr/hal-02418396
Contributor : Holger Heumann <>
Submitted on : Wednesday, December 18, 2019 - 5:30:35 PM
Last modification on : Monday, October 12, 2020 - 2:28:06 PM

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Jacques Blum, Holger Heumann, Eric Nardon, Xiao Song. Automating the design of tokamak experiment scenarios. Journal of Computational Physics, Elsevier, 2019, 394, pp.594-614. ⟨10.1016/j.jcp.2019.05.046⟩. ⟨hal-02418396⟩

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