Real-time optical plasma boundary reconstruction for plasma position control at the TCV Tokamak

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.


Published in:
Nuclear Fusion, 54, 7, 073018
Year:
2014
Publisher:
Bristol, Iop Publishing Ltd
ISSN:
0029-5515
Keywords:
Laboratories:
SPC
CRPP




 Record created 2014-08-29, last modified 2018-09-13


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