Runtime construction of dynamic plasma scenarios for full-wave synthetic diagnostics: a parameter-space framework demonstrated on VOPOO at SPEKTRE

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Abstract
Sheaths, Plasma Edge & Kinetic Turbulence Radiofrequency Experiment is a new research platform dedicated to plasma physics and nuclear fusion, designed to investigate magnetised plasmas. The platform will be relevant to edge physics in fusion devices, and will offer extensive diagnostic coverage, enabling comprehensive measurements. One of the diagnostics being designed is the Variable Oblique Probing on O-mode (VOPOO) to study normal to tangential wave propagation at the edge of a plasma and to contribute to the development of novel analysis tools for experimental data, with applications to intensity refractometry and innovative tomographic approaches for next-generation fusion machines such as DEMO (DEMOnstration Power Plant). This study introduces a method for constructing plasma descriptions for a VOPOO synthetic diagnostic. It accommodates a broad range of plasma scenarios, including instabilities and various turbulence regimes, which are evaluated across multiple antenna configurations and injection angles. The implemented synthetic diagnostic is crucial for interpreting the results of the experiment, especially for treating intensity refractometry data, and for driving the development of advanced processing techniques, including machine learning-based methods. This is a first step towards the final goal of having a numerical twin of VOPOO.
Funding Information
  • Fundação para a Ciência e Tecnologia (UIDB/50010/2020)
  • Agence Nationale de la Recherche (ANR-25-CE57-1158-01)
  • EUROfusion Consortium (ENR-TEC.01.IST.)

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