Modelling reflectometry diagnostics: finite-difference time-domain simulation of reflectometry in fusion plasmas

F da Silva (1) , Stéphane Heuraux (2) , E. Ricardo (1) , A. F Silva (3) , T. Ribeiro (4)

1 IPFN - Instituto de Plasmas e Fusão Nuclear [Lisboa]
2 IJL - Institut Jean Lamour
3 ULISBOA - Universidade de Lisboa = University of Lisbon
4 IPP - Max-Planck-Institut für Plasmaphysik [Garching]

Reflectometry simulations are particularly important since they allow to assess the measuring capabilities in experimental fusion devices and to predict the performance of future ones. We present a brief overview of reflectometry and introduce the family of REFMUL* codes for time-dependent reflectometry simulation. REFMUL* codes are Finite Di erence Time Domain (FDTD) that allow to set up synthetic diagnostics to assess the behaviour of reflectometry diagnostics. This is illustrated in the current manuscript using the example of the Plasma Position Reflectometers of DEMO. K : Nuclear instruments and methods for hot plasma diagnostics; Simulation methods and programs; Plasma diagnostics-interferometry, spectroscopy and imaging

Domaines: Physique des plasmas [physics.plasm-ph]

F da Silva, Stéphane Heuraux, E. Ricardo, A. F Silva, T. Ribeiro. Modelling reflectometry diagnostics: finite-difference time-domain simulation of reflectometry in fusion plasmas. Journal of Instrumentation, 2019, 14 (8), pp.C08003. ⟨10.1088/1748-0221/14/08/C08003⟩. ⟨hal-02435292⟩