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  • Horvath, L.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.;Univ York, York Plasma Inst, Dept Phys, York YO10 5DD, N Yorkshire, England. (författare)

Isotope dependence of the type I ELMy H-mode pedestal in JET-ILW hydrogen and deuterium plasmas

  • Artikel/kapitelEngelska2021

Förlag, utgivningsår, omfång ...

  • 2021-03-09
  • IOP Publishing,2021
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:kth-292620
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-292620URI
  • https://doi.org/10.1088/1741-4326/abdd77DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • QC 20210412
  • The pedestal structure, edge transport and linear MHD stability have been analyzed in a series of JET with the ITER-like wall hydrogen (H) and deuterium (D) type I ELMy H-mode plasmas. The pedestal pressure is typically higher in D than in H at the same input power and gas rate, with the difference mainly due to lower density in H than in D (Maggi et al (JET Contributors) 2018 Plasma Phys. Control. Fusion 60 014045). A power balance analysis of the pedestal has shown that higher inter-ELM separatrix loss power is required in H than in D to maintain a similar pedestal top pressure. This is qualitatively consistent with a set of interpretative EDGE2D-EIRENE simulations for H and D plasmas, showing that higher edge particle and heat transport coefficients are needed in H than in D to match the experimental profiles. It has also been concluded that the difference in neutral penetration between H and D leads only to minor changes in the upstream density profiles and with trends opposite to experimental observations. This implies that neutral penetration has a minor role in setting the difference between H and D pedestals, but higher ELM and/or inter-ELM transport are likely to be the main players. The interpretative EDGE2D-EIRENE simulations, with simultaneous upstream and outer divertor target profile constraints, have indicated higher separatrix electron temperature in H than in D for a pair of discharges at low fueling gas rate and similar stored energy (which required higher input power in H than in D at the same gas rate). The isotope dependence of linear MHD pedestal stability has been found to be small, but if a higher separatrix temperature is considered in H than in D, this could lead to destabilization of peeling-ballooning modes and shrinking of the stability boundary, qualitatively consistent with the reduced pedestal confinement in H.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Maggi, C. F.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Chankin, A.Max Planck Inst Plasma Phys, Boltzmannstr 2, D-85748 Garching, Germany. (författare)
  • Saarelma, S.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Field, A. R.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Aleiferis, S.NCSR Demokritos, Inst Nucl & Radiol Sci & Technol, Energy & Safety, Athens 15310, Greece. (författare)
  • Belonohy, E.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Boboc, A.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Corrigan, G.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Delabie, E. G.Oak Ridge Natl Lab, Oak Ridge, TN USA. (författare)
  • Flanagan, J.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Frassinetti, LorenzoKTH,Fusionsplasmafysik(Swepub:kth)u1sfgalb (författare)
  • Giroud, C.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Harting, D.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Keeling, D.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • King, D.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Maslov, M.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Matthews, G. F.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Menmuir, S.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Silburn, S. A.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (författare)
  • Simpson, J.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.;Aalto Univ, Espoo 02150, Finland. (författare)
  • Sips, A. C. C.Culham Sci Ctr, JET Exploitat Unit, Abingdon OX14 3DB, Oxon, England.;European Commiss, Brussels, Belgium. (författare)
  • Weisen, H.Ecole Polytech Fed Lausanne, Swiss Plasma Ctr, Lausanne, Switzerland. (författare)
  • Gibson, K. J.Univ York, York Plasma Inst, Dept Phys, York YO10 5DD, N Yorkshire, England. (författare)
  • Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.;Univ York, York Plasma Inst, Dept Phys, York YO10 5DD, N Yorkshire, England.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Nuclear Fusion: IOP Publishing61:40029-55151741-4326

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