Integrated Tokamak Modelling

Tokamak plasma discharges are fascinating complex events where disparate spatial and temporal scale phenomena co-exist and often have striking mutual influence. The currents applied to the toroidal and poloidal field coils to shape the plasma column have a significant influence on the plasma condition, by changing the current density, particle and energy deposition by auxiliary heating and current drive. This, in turn, has strong effect on the evolution of the plasma kinetic profiles and ultimately the small spatial and time scale turbulence events.

An Integrated modelling approach towards a ‘numerical tokamak’ is therefore essential and requires a large coordinated effort between development, verification and validation of computational models and their integration of modular sets of codes in modelling infrastructures.

The main goal of the group’s activity in this topic is on

  • The development and maintenance of scientific workflows in the EU Integrated Modelling Infrastructure and on the ITER modelling analysis suite (IMAS) e.g. European Transport Simulator (ETS) and Linear MHD stability chain
  • The verification and validation of the physics actors included in the workflows
  • The scientific exploitation for interpretive and predictive modelling in present and future tokamak devices (currently JET, AUG, JT-60SA, ITER, DEMO).
Linear MHD stability chain in IMAS simulation platform (collaboration with ENEA, SPC, Univ. Cork, Univ. Chalmers)
Visualisation of outputs from an European Transport Simulator scenario.