|Title||Real-time optical plasma boundary reconstruction for plasma position control at the TCV Tokamak|
|Publication Type||Journal Article|
|Year of Publication||2014|
|Authors||G. Hommen, M. de Baar, B.P Duval, Y. Andrebe, H.B Le, M.A Klop, N.J Doelman, G. Witvoet, M. Steinbuch, TCV team|
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.
|Alternate Title||Nucl. Fusion|
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