Overview of experimental preparation for the ITER-Like Wall at JET
2011 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 415, no 1, S936-S942 p.Article in journal (Refereed) Published
Experiments in JET with carbon-based plasma-facing components have been carried out in preparation of the ITER-Like Wall with beryllium main chamber and full tungsten divertor. The preparatory work was twofold: (i) development of techniques, which ensure safe operation with the new wall and (ii) provision of reference plasmas, which allow a comparison of operation with carbon and metallic wall. (i) Compatibility with the W divertor with respect to energy loads could be achieved in N-2 seeded plasmas at high densities and low temperatures, finally approaching partial detachment, with only moderate confinement reduction of 10%. Strike-point sweeping increases the operational space further by re-distributing the load over several components. (ii) Be and C migration to the divertor has been documented with spectroscopy and QMBs under different plasma conditions providing a database which will allow a comparison of the material transport to remote areas with metallic walls. Fuel retention rates of 1.0-2.0 x 10(21) D s(-1) were obtained as references in accompanied gas balance studies.
Place, publisher, year, edition, pages
2011. Vol. 415, no 1, S936-S942 p.
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:kth:diva-90682DOI: 10.1016/j.jnucmat.2010.10.037ISI: 000298128100213ScopusID: 2-s2.0-79960345258OAI: oai:DiVA.org:kth-90682DiVA: diva2:505972
19th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices (PSI). QC 201202272012-02-272012-02-272012-02-27Bibliographically approved