This title appears in the Scientific Report :
2011
Please use the identifier:
http://dx.doi.org/10.1088/0031-8949/2011/T145/014054 in citations.
Numerical simulation of tungsten melt layer erosion caused by JxB force at TEXTOR
Numerical simulation of tungsten melt layer erosion caused by JxB force at TEXTOR
Tungsten, in the form of a macrobrush, is seen as one of the candidate materials for the ITER divertor. The melting of tungsten, melt motion and melt splashing are expected to be the main mechanisms of surface damage, which determines the lifetime of plasma-facing components. Experiments with long-t...
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Personal Name(s): | Bazylev, B. |
---|---|
Igitkhanov, Yu. / Coenen, J.W. / Philipps, V. / Ueda, Y. | |
Contributing Institute: |
Plasmaphysik; IEK-4 |
Published in: | Physica scripta, T145 (2011) S. 014054 |
Imprint: |
Bristol
IoP Publ.
2011
|
Physical Description: |
014054 |
DOI: |
10.1088/0031-8949/2011/T145/014054 |
Document Type: |
Journal Article |
Research Program: |
Fusion |
Series Title: |
Physica Scripta Topical Issue
T145 |
Subject (ZB): | |
Publikationsportal JuSER |
Tungsten, in the form of a macrobrush, is seen as one of the candidate materials for the ITER divertor. The melting of tungsten, melt motion and melt splashing are expected to be the main mechanisms of surface damage, which determines the lifetime of plasma-facing components. Experiments with long-time plasma action at the metallic surface in a strong magnetic field demonstrate that the J x B force generated by thermo-emission electrons dominates in the acceleration of the melt layer and leads to high target damage. In this paper, numerical simulations of tungsten target damage caused by the long-time plasma heat loads supporting the TEXTOR experiments are performed by the MEMOS code. The calculated tungsten target damage is in good agreement with the target damage observed in the TEXTOR experiments, which allows projections of surface damage to be made at ITER and DEMO conditions. |