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A first full wave simulation assessment of reflectometry for DTT

Abstract : The Divertor Test Tokamak (DTT) facility is being proposed to study the exhaust solutions in tokamaks with a special look on DEMO, searching for alternatives to ITER's detached condition operation, for the case this solution proves inadequate. To know about the physical processes occurring in the plasma or for engineering needs and control uses, diagnostics play a major role and reflectometry, foreseen in the forthcoming generation of machines such as ITER and DEMO, is a useful asset for DTT. Assessing the di erent areas and applications that could be deployed on DTT is of significant importance from an early stage. We propose, therefore, to use numerical simulation using finite-di erence time-domain codes (FDTD) of the REFMUL* family to implement synthetic reflectometry diagnostics. Di erent aspects are included such as propagation in the plasma, optimisation of the system location within the vacuum vessel, its access to the plasma (waveguide and antennas), or the signal processing techniques.
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Submitted on : Tuesday, January 14, 2020 - 10:44:11 PM
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Filipe da Silva, Jorge Ferreira, G de Masi, Stéphane Heuraux, Emanuel Ricardo, et al.. A first full wave simulation assessment of reflectometry for DTT. Journal of Instrumentation, 2019, 14 (08), pp.C08011. ⟨10.1088/1748-0221/14/08/C08011⟩. ⟨hal-02440059⟩



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