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

TitleReal-time optical plasma boundary reconstruction for plasma position control at the TCV Tokamak
Publication TypeJournal Article
Year of Publication2014
AuthorsG. Hommen, M. de Baar, B.P Duval, Y. Andrebe, H.B Le, M.A Klop, N.J Doelman, G. Witvoet, M. Steinbuch, TCV team
JournalNuclear Fusion
Volume54
Number7
Pagination073018
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.

DOI10.1088/0029-5515/54/7/073018
Division

FP

Department

TP

PID

6dc862485b6b1045595d0c48e382998f

Alternate TitleNucl. Fusion
LabelOA
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