Numerical studies of particle transport in RFX-mod low chaos regimes (Contributo in atti di convegno)

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  • Numerical studies of particle transport in RFX-mod low chaos regimes (Contributo in atti di convegno) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • M.Gobbin 1, F. Sattin 1, S.C. Guo 1, S. Cappello 1, F. Sattin 1, L.Marrelli 1 and L. Garzotti 2 (2008)
    Numerical studies of particle transport in RFX-mod low chaos regimes
    in 35th European Physical Society Conference on PLasma Physics combined with the 10th International Workshop on Fast Ignition of Fusion Targets, Hersonissos, 9-13 June 2008
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • M.Gobbin 1, F. Sattin 1, S.C. Guo 1, S. Cappello 1, F. Sattin 1, L.Marrelli 1 and L. Garzotti 2 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • The scientific programme of the conference and the selection of papers were the responsibility of the international Programme Committee appointed by the board of the EPS Plasma Physics Division. (see Preface of the Editors) (literal)
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  • http://epsppd.epfl.ch/Hersonissos/pdf/P5_035.pdf (literal)
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  • Europhysics Conference Abstracts - Contributed papers (literal)
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  • 32D (literal)
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  • 4 (literal)
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  • 1Consorzio RFX - Associazione Euratom-ENEA - Padova, Italy 2 Euratom/UKAEA Fusion Association,Culham Science Centre, Abingdon Oxon, UK. (literal)
Titolo
  • Numerical studies of particle transport in RFX-mod low chaos regimes (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 2-914771-52-5 (literal)
Abstract
  • In the Reversed Field Pinch (RFP) configuration the plasma can access regimes in which a single tearing mode dominates the magnetic perturbations spectrum (Quasi Single Helicity state, QSH) [1]. Thermal measurements performed in the RFX-mod experiment [2] (Padua, Italy) during QSH states have shown clear helical structures, identified by significant temperature gradient in the plasma core, which can reach a considerable size (25-50% of plasma radius) and temporal persistance up to 85% the flat top phase (~200ms) of the discharge [3]. In this work we study some aspects of the transport mechanisms relevant to these conditions: on the one hand the impact of residual magnetic chaos, on the other hand the effect of electrostatic micro-instabilities, the latter have been overlooked in the past when the RFP configurations where frequently dominated by turbulent chaotic regimes (so-called MH regimes). We shall here consider the best perfomance discharges (plasma current Ip ~1.0-1.3MA and electron density ne ~2-4?1019 m-3) characterized by QSH regimes with separatrix expulsion from the helical core [4]. (literal)
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