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ELM size analysis in JET hybrid plasmas
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics. KTH, School of Electrical Engineering (EES), Centres, Alfvén Laboratory Centre for Space and Fusion Plasma Physics.ORCID iD: 0000-0002-9546-4494
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2011 (English)In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 51, no 11, 112001- p.Article in journal (Refereed) Published
Abstract [en]

Experimental results are presented in this paper, characterizing the behaviour of type I ELMs for a JET database of standard ELMy H-mode and hybrid plasmas. Whereas the collisionality scaling published in [ 1] has been reproduced for the new baseline discharges, no clear correlation can be established from the analysis of hybrid scenarios. The ELM losses normalized to the pedestal stored energy for high triangularity hybrid plasmas seem to be significantly larger than the energies for baseline plasmas at similar values of collisionality. For low triangularity hybrid plasmas, the ELM losses are of the same order as those obtained in baseline scenarios. The important scatter of the results seems to be due to the sensitivity of hybrid plasmas to gas fuelling. Analysis of the ITER-like wall compatibility of hybrid discharges is also reported.

Place, publisher, year, edition, pages
2011. Vol. 51, no 11, 112001- p.
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-51284DOI: 10.1088/0029-5515/51/11/112001ISI: 000296904000001ScopusID: 2-s2.0-80555123814OAI: diva2:463964
QC 20111212Available from: 2011-12-12 Created: 2011-12-12 Last updated: 2011-12-12Bibliographically approved

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Frassinetti, Lorenzo
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