SXR Diagnosis of Electron Temperature Dynamics in Reversed-Field Pinches (Abstract/Poster in atti di convegno)

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  • SXR Diagnosis of Electron Temperature Dynamics in Reversed-Field Pinches (Abstract/Poster in atti di convegno) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Alternative label
  • P. Franz; M. Gobbin; L. Marrelli; A. Ruzzon; F. Bonomo; A. Fassina; E. Martines; M.B. McGarry; D.J. Den Hartog; J.A. Goetz; J. Johnson (2013)
    SXR Diagnosis of Electron Temperature Dynamics in Reversed-Field Pinches
    in 55th Annual Meeting of the APS Division of Plasma Physics, Denver, Colorado, USA, November 11-15, 2013
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • P. Franz; M. Gobbin; L. Marrelli; A. Ruzzon; F. Bonomo; A. Fassina; E. Martines; M.B. McGarry; D.J. Den Hartog; J.A. Goetz; J. Johnson (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Session CP8: Poster Session II: Astro, Simulations, RFP, Tokamak, Stellarator; Abstract: CP8.00095; Il periodico esiste dal 1925, con ISSN 0003-0503, come risulta dal record ACNP. Il record ISSN invece non è attualizzato. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://meetings.aps.org/Meeting/DPP13/Event/200176 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • Bulletin of the American Physical Society - 55th Annual Meeting of the APS Division of Plasma Physics (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana
  • 58/16 (literal)
Note
  • Abstract (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1-7 : Consorzio RFX, Padova, Italy / 8-11 : University of Wisconsin, Madison and CMSO. (literal)
Titolo
  • SXR Diagnosis of Electron Temperature Dynamics in Reversed-Field Pinches (literal)
Abstract
  • Sophisticated multi-chord diagnostics have been developed on RFX-Mod and MST for soft x-ray (SXR) emissivity and electron temperature (Te) profile measurements. Quasi Single Helicity (QSH) plasmas, where a single m=1 tearing mode dominates the MHD magnetic spectrum, have been analyzed. To improve the SXR and Te profile reconstructions in the presence of QSH, algorithms that reproduce the magnetic topology have been developed to map the measurements on flux surfaces. In RFX-Mod the analysis shows a strong correlation between magnetic QSH and the appearance of a SXR structure in the emissivity distribution. The SXR structure corresponds to a thermal structure in the Te profile. Differences in the temperature gradient between the rising phase and the flattop phase of QSH have been analyzed. In the rising phase the gradient increases and the thermal structure grows in size. During the flattop phase, where the dominant mode amplitude is constant, the structure is intermittent, with several crashes that make the Te profile flatter. Similar measurements at MST confirm the correspondence between QSH and SXR structure. The analysis shows that this structure can be correlated with a thermal structure but that also impurity could play an important role. (literal)
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