Change search
ReferencesLink to record
Permanent link

Direct link
Thermal analysis of an exposed tungsten edge in the JET divertor
Show others and affiliations
2015 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 463, 415-419 p.Article in journal (Refereed) Published
Abstract [en]

In the recent melt experiments with the JET tungsten divertor, we observe that the heat flux impacting on a leading edge is 3-10 times lower than a geometrical projection would predict. The surface temperature, tungsten vaporisation rate and melt motion measured during these experiments is consistent with the simulations using the MEMOS code, only if one applies the heat flux reduction. This unexpected observation is the result of our efforts to demonstrate that the tungsten lamella was melted by ELM induced transient heat loads only. This paper describes in details the measurements and data analysis method that led us to this strong conclusion. The reason for the reduced heat flux are yet to be clearly established and we provide some ideas to explore. Explaining the physics of this heat flux reduction would allow to understand whether it can be extrapolated to ITER.

Place, publisher, year, edition, pages
2015. Vol. 463, 415-419 p.
National Category
Materials Engineering
URN: urn:nbn:se:kth:diva-172690DOI: 10.1016/j.jnucmat.2014.11.005ISI: 000358467200083ScopusID: 2-s2.0-84937683554OAI: diva2:850209

QC 20150901

Available from: 2015-09-01 Created: 2015-08-27 Last updated: 2015-09-01Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Frassinetti, Lorenzo
By organisation
Fusion Plasma Physics
In the same journal
Journal of Nuclear Materials
Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 27 hits
ReferencesLink to record
Permanent link

Direct link