Abstract
A novel plasma position and shape controller has been developed for the highly flexible shaping poloidal-field coil set of the TCV tokamak, to aid in the precise control of advanced configurations such as negative-triangularity plasmas, snowflake and super-X divertors, and doublets. This work follows and relies on the deployment of a new, sub-ms, real-time magnetic equilibrium-reconstruction algorithm. The controller formulation ensures flexibility through an ordering of controlled variables from the most easily to the least easily controlled, while respecting the hardware limits on the poloidal-field coil currents. A rigid, linearised plasma response model for the TCV tokamak is used for the verification and determination of the control parameters. The controller has been applied successfully to a variety of TCV plasma discharges.
| Original language | English |
|---|---|
| Article number | 126026 |
| Number of pages | 16 |
| Journal | Nuclear Fusion |
| Volume | 57 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 22 Sept 2017 |
Keywords
- advance plasma configuration
- plasma modelling
- plasma position and shape control
- real-time control
- real-time equilibrium reconstruction
- tokamak control