Impact of nitrogen seeding on confinement and power load control of a high-triangularity JET ELMy H-mode plasma with a metal wall
2013 (English)In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 53, no 11, 113025- p.Article in journal (Refereed) Published
This paper reports the impact on confinement and power load of the high-shape 2.5MA ELMy H-mode scenario at JET of a change from all carbon plasma-facing components to an all metal wall. In preparation to this change, systematic studies of power load reduction and impact on confinement as a result of fuelling in combination with nitrogen seeding were carried out in JET-C and are compared with their counterpart in JET with a metallic wall. An unexpected and significant change is reported on the decrease in the pedestal confinement but is partially recovered with the injection of nitrogen.
Place, publisher, year, edition, pages
2013. Vol. 53, no 11, 113025- p.
All metal, Metal walls, Metallic walls, Plasma-facing components, Power load, Systematic study
IdentifiersURN: urn:nbn:se:kth:diva-136846DOI: 10.1088/0029-5515/53/11/113025ISI: 000326684400026ScopusID: 2-s2.0-84887125646OAI: oai:DiVA.org:kth-136846DiVA: diva2:677347
QC 201312092013-12-092013-12-092013-12-09Bibliographically approved