Home / Store / Journals / Electronic Articles / Fusion Science and Technology / Volume 50 / Number 2 / Pages 313-319
M. A. Ochando, F. Medina, B. Zurro, A. Baciero, K. J. McCarthy, M. A. Pedrosa, C. Hidalgo, E. Sánchez, J. Vega, A. B. Portas, L. M. Martínez-Fresno, HIBP Group, ECRH Group, NBI Group, TJ-II Team
Fusion Science and Technology / Volume 50 / Number 2 / Pages 313-319
Format:electronic copy (download)
Understanding the origin of asymmetries, either in plasma flows reaching the divertor region or in plasma emissivity from the confined volume, is a question of great interest in magnetic confined plasma research.In the TJ-II stellarator, a set of bolometer systems distributed around the vacuum chamber has been installed to monitor up-down and in-out radiation asymmetries that are observed in transitions to different confinement regimes. Although plasma emissivity is a complex magnitude, a comparison of signals from twin detectors placed at selected positions may be of help to distinguish between the different causes of asymmetry. Moreover, this is a nonperturbing method that is especially appropriate when plasma wall clearance is small.
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