CNR ExploRA

Poster, 2021, ENG

Integrated plasma state reconstruction, off-normal event handling and control with application to TCV and ASDEX Upgrade

Felici F.; Blanken T.; Bosman T.; Carpanese F.; Fischer R.; Galperti C.; Giannone L.; Kong M.; Kudlacek O.; Maraschek M.; Merle A.; Moret J-M.; van Mulders S.; Pau A.; Poli E.; Reich M.; Rispoli N.; Sauter O.; Sieglin B.; Sozzi C.; Treutterer W.; Vu N.M.T.; Weiland M.; the TCV1; ASDEX Upgrade; EUROfusion MST1

École Fédérale Polytechnique de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne, Switzerland; Eindhoven University of Technology, Eindhoven, The Netherlands; Max Planck Institute for Plasma Physics, Garching, Germany; Istituto per la Scienza e Tecnologia dei Plasmi, Consiglio Nazionale delle Ricerche, Milano, Italy.

Next-generation tokamaks will require integrated plasma control solutions beyond the present state-of-the art. Such solutions are being actively explored on the TCV and ASDEX Upgrade tokamaks. A summary of recent achievements is provided in this paper. We report on advances in plasma state reconstruction algorithms including improved density profile estimations on ASDEX Upgrade and a first implementation of kinetic equilibrium reconstruction constrained by real-time transport equation solutions on TCV. Recent progress in development of generic plasma supervisory control system on TCV, including a mix of continuous control and off-normal event handling is discussed, together with its application to high-density limit disruption avoidance.The RABBIT code for real-time NBI deposition calculations has been integrated in the ASDEX Upgrade control system and quantities computed by the code have been used for real-time feedback control of the power deposited to the ions.Finally, we report on a first demonstration of model-based shot-to-shot iterative improvement of actuator trajectories,applied to control of the central ion and electron temperature by an appropriate mix of ECH and NBI.

28th IAEA Fusion Energy Conference (FEC 2020), Virtual Event, 10-15 maggio 2021