The kinetic equilibrium reconstruction in TCV with LIUQE/RAPTOR: first real-time demonstration during plasma operation
Abstract
The Kinetic Equilibrium Reconstruction (KER), coupling self-consistently the free-boundary equilibrium code LIUQE to the 1.5D transport code RAPTOR, has been performed for the first time in real-time during TCV plasma operation. RAPTOR can solve predictively the flux surface averaged Ohm's law, the electron heat Te and the particle ne diffusion equations providing self-consistent p(ρ,t) and j(ρ,t) constraints to the free-boundary equilibrium code. An Extended Kalman Filter technique is used to combine the kinetic measurements available in real-time and transport code prediction yielding a robust state estimation of the plasma profiles. During different plasma states (flat central ne, ECCD induced j profile broadening, NTM induced Te drop) the KER is shown to reproduce better the profile modifications when compared to the standard equilibrium reconstruction, where only external magnetic measurements are considered.
This work was supported in part by the Swiss National Science Foundation.- Publication:
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APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..DPPG10096C