First efforts in numerical modeling of tungsten migration in WEST with SolEdge2D-EIRENE and ERO2.0

A. Gallo (Corresponding author), A. Sepetys, J. Romazanov, Y. Marandet, S. Brezinsek, H. Bufferand, G. Ciraolo, Y. Corre, S. Ertmer, N. Fedorczak, J. Gunn, A. Kirschner, C. Martin, O. Meyer, G.J. van Rooij, P. Roubin, E. Tsitrone

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

The first simulations of tungsten migration in WEST are performed with the SolEdge2D-EIRENE and ERO2.0 codes to support experimental investigations into the erosion of plasma-facing components and plasma impurity content. The impact of varying the background density on (i) the amount of tungsten penetrating the confined plasma, (ii) the promptly redeposited fraction, and (iii) the erosion and deposition patterns on the wall, is investigated under the working assumptions of a simplified toroidally symmetric wall contour, typical L-mode values of the transport coefficients, and deuterium plasma with a 1% oxygen content. The lower divertor is found to be the main zone of net tungsten erosion and deposition. This pattern is reduced at high background density due to the higher promptly redeposited fraction.

Original languageEnglish
Article number014013
Number of pages6
JournalPhysica Scripta
Volume2020
Issue numberT171
DOIs
Publication statusPublished - 27 Feb 2020
Event17th International Conference on Plasma-Facing Materials and Components for Fusion Applications, PFMC 2019 - Eindhoven, Netherlands
Duration: 20 May 201924 May 2019

Keywords

  • Ero2.0
  • Material migration
  • Nuclear fusion
  • Plasma-wall interaction
  • Soledge2d-eirene
  • Tungsten
  • West

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