Impact of W on scenario simulations for ITER

G.M.D. Hogeweij, V. Leonov, J. Schweinzer, A.C.C. Sips, C. Angioni, G. Calabrò, R. Dux, A. Kallenbach, E. Lerche, C. Maggi, Th. Pütterich

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Abstract

In preparation of ITER operation, large machines have replaced their wall and divertor material to W (ASDEX Upgrade) or a combination of Be for the wall and W for the divertor (JET). Operation in these machines has shown that the influx of W can have a significant impact on the discharge evolution, which has made modelling of this impact for ITER an urgent task. This paper reports on such modelling efforts. Maximum tolerable W concentrations have been determined for various scenarios, both for the current ramp-up and flat-top phase. Results of two independent methods are presented, based on the codes ZIMPUR plus ASTRA and CRONOS, respectively. Both methods have been tested and benchmarked against ITER-like IpRU experiments at JET. It is found that W significantly disturbs the discharge evolution when the W concentration approaches ∼10-4; this critical level varies somewhat between scenarios.
Original languageEnglish
Article number063031
Pages (from-to)-
JournalNuclear Fusion
Volume55
Issue number6
DOIs
Publication statusPublished - 1 Jun 2015
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Hogeweij, G. M. D., Leonov, V., Schweinzer, J., Sips, A. C. C., Angioni, C., Calabrò, G., ... Pütterich, T. (2015). Impact of W on scenario simulations for ITER. Nuclear Fusion, 55(6), -. [063031]. https://doi.org/10.1088/0029-5515/55/6/063031