A novel plasma position and shape controller for advanced configuration development on the TCV tokamak

H. Anand, S. Coda, F. Felici, C. Galperti, J.M. Moret

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19 Citations (Scopus)
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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 languageEnglish
Article number126026
Number of pages16
JournalNuclear Fusion
Volume57
Issue number12
DOIs
Publication statusPublished - 22 Sept 2017

Keywords

  • advance plasma configuration
  • plasma modelling
  • plasma position and shape control
  • real-time control
  • real-time equilibrium reconstruction
  • tokamak control

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