Back to Search
Start Over
Analysis of radiative disruptions in RF-heated Tore Supra plasmas using infrared imaging
- Source :
-
Journal of Nuclear Materials . Jun2009, Vol. 390-391, p806-809. 4p. - Publication Year :
- 2009
-
Abstract
- Abstract: The precursors and following sequential events leading to radiative disruptions in Tore Supra have been analysed using infrared imaging, together with visible and ultraviolet spectroscopy of impurity species. A common feature observed prior to the disruptions is the appearance of a small (∼cm2) hot spot on the main plasma facing component, the Toroidal Pumped Limiter (TPL), clearly localised in a zone of thick carbon re-deposition (>100μm). A MARFE (Multifaceted Asymmetric Radiation From the Edge) is often triggered, followed by disruption. Such hot spots have been observed in ∼24% of the analysed disruptions, which is consistent with the fact that only 4/18 (22%) of the total area of the TPL is monitored with infrared cameras. These results suggest that over-heating of thick carbon re-deposition layers may play a role in the operational limits (MARFE, disruption) encountered. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00223115
- Volume :
- 390-391
- Database :
- Academic Search Index
- Journal :
- Journal of Nuclear Materials
- Publication Type :
- Academic Journal
- Accession number :
- 39894141
- Full Text :
- https://doi.org/10.1016/j.jnucmat.2009.01.213