This title appears in the Scientific Report :
2009
Please use the identifier:
http://dx.doi.org/10.1016/j.jnucmat.2009.01.097 in citations.
Investigations of casetellated structures for ITER: the effect of castellation shaping and alignment on fuel retention and impurity deposition in gaps
Investigations of casetellated structures for ITER: the effect of castellation shaping and alignment on fuel retention and impurity deposition in gaps
Castellation will be used in divertor and first wall components to provide thermo-mechanical stability of ITER. Radioactive fuel may be stored in the gaps of castellated structures representing a safety issue for ITER. Tungsten castellated structures with different shapes were exposed in TEXTOR to i...
Saved in:
Personal Name(s): | Litnovsky, A. |
---|---|
Philipps, V. / Wienhold, P. / Krieger, A. / Kirschner, A. / Borodin, D. / Sergienko, G. / Schmitz, O. / Kreter, A. / Samm, U. / Richter, S. / Breuer, U. / Gunn, J.P. / Komm, M. / Pekarek, Z. | |
Contributing Institute: |
Plasmaphysik; IEF-4 JARA-ENERGY; JARA-ENERGY |
Published in: | Journal of nuclear materials, 390-391 (2009) |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2009
|
DOI: |
10.1016/j.jnucmat.2009.01.097 |
Document Type: |
Journal Article |
Research Program: |
Fusion |
Series Title: |
Journal of Nuclear Materials
390-391 |
Subject (ZB): | |
Publikationsportal JuSER |
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245 | |a Investigations of casetellated structures for ITER: the effect of castellation shaping and alignment on fuel retention and impurity deposition in gaps | ||
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520 | |a Castellation will be used in divertor and first wall components to provide thermo-mechanical stability of ITER. Radioactive fuel may be stored in the gaps of castellated structures representing a safety issue for ITER. Tungsten castellated structures with different shapes were exposed in TEXTOR to investigate the impact of cell shaping on impurity transport and fuel deposition in the gaps. After exposure a significant intermixing of tungsten was detected in carbon deposits in the gaps reaching 70 at.% of W in the deposited layer. This will provide difficulties in cleaning the gaps in ITER. Poloidal gaps of shaped cells contained a factor or 3 less deuterium than those of rectangular cells, the carbon deposition exhibited only marginal advantages of a new geometry. Poloidal and toroidal gaps contained comparable amount of C and D. Significant deposition at the bottom of gaps was measured which could only partly be reproduced by modeling. (C) 2009 Elsevier B.V. All rights reserved. | ||
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