@article{7877,
  author = {G. Hommen and M. de Baar and B. P. Duval and Y. Andrebe and H. B. Le and M. A. Klop and N. J. Doelman and G. Witvoet and M. Steinbuch and TCV team},
  title = {Real-time optical plasma boundary reconstruction for plasma position control at the TCV Tokamak},
  abstract = {A dual, high speed, real-time visible light camera setup was installed on the TCV tokamak to reconstruct optically and in real-time the plasma boundary shape. Localized light emission from the plasma boundary in tangential view, broadband visible images results in clearly resolved boundary edge-features. These projected features are detected in real-time and transformed to the poloidal plane to obtain a measurement of the plasma boundary. Plasma boundary reconstructions of diverted plasma discharges are presented, showing agreement of within 1 cm compared with magnetic equilibrium reconstruction. The resulting real-time plasma shape measurement is applied in a feedback control loop for the plasma position, demonstrating effective stabilization and tracking of the plasma vertical position.
},
  year = {2014},
  journal = {Nuclear Fusion},
  volume = {54},
  number = {7},
  pages = {073018},
  doi = {10.1088/0029-5515/54/7/073018},
  language = {eng},
}