First analysis of tungsten transport in the edge of Tore Supra plasmas

• Published in: Journal of nuclear materials Vol. 438; pp. S526 - S529
• Main Authors: Meyer, O., Kočan, M., Gunn, J., Pütterich, T., Devynck, P., Guirlet, R., Lunt, T., Mazon, D., Vezinet, D., Pascal, J.-Y., Vartanian, S.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2013
• Subjects: Assessments; Lasers; Plasmas; Polypropylenes; Screening; Tokamak devices; Transport; Tungsten
• ISSN: 0022-3115; 1873-4820
• DOI: 10.1016/j.jnucmat.2013.01.109

A series of Tungsten (W) injections was performed in the Tore Supra (TS) tokamak during the 2011 experimental campaign. The first goal of this experiment was to establish Vacuum Ultra Violet W spectroscopy in view of the WEST project that consists in equipping TS with a full W divertor and the second one to study the W screening properties of the TS Scrape-Off Layer (SOL). The injections are performed by Laser Blow Off injections and by a new injection system developed at IPP Garching. The latter was mounted on the TS fast reciprocating manipulator system allowing quantitatively controlled injections of W molecules at different radial positions. The W quasi-continuum observed at 5nm is the best candidate for W concentration assessment in WEST. Regarding SOL transport, the experimental results suggest a screening effect of the SOL in qualitative agreement with modelling of the W transport by EMC3 EIRENE.