High resolution Thomson scattering for Joint European Torus (JET) (Articolo in rivista)

Type
Label
  • High resolution Thomson scattering for Joint European Torus (JET) (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.1787922 (literal)
Alternative label
  • R. Pasqualotto; P. Nielsen; C. Gowers; M. Beurskens; M. Kempenaars; T .Carlstrom; D. Johnson and JET-EFDA Contributors (2004)
    High resolution Thomson scattering for Joint European Torus (JET)
    in Review of scientific instruments; American Institute Of Physics (AIP), Melville (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • R. Pasqualotto; P. Nielsen; C. Gowers; M. Beurskens; M. Kempenaars; T .Carlstrom; D. Johnson and JET-EFDA Contributors (literal)
Pagina inizio
  • 3891 (literal)
Pagina fine
  • 3893 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 75 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • R. Pasqualotto : EFDA-CSU Culham, Culham Science Centre, Abingdon, OX14 3DB, United Kingdom and Consorzio RFX-Associazione Euratom-Enea sulla Fusione, Corso Stati Uniti 4, I-35127 Padova, Italy / P. Nielsen: Consorzio RFX-Associazione Euratom-Enea sulla Fusione, Corso Stati Uniti 4, I-35127 Padova, Italy / C. Gowers: EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon, OX14 3DB, United Kingdom / M. Beurskens and M. Kempenaars: FOM-Rijnhuizen, Ass. Euratom-FOM, TEC, PO Box 1207, 3430 BE Nieuwegein, The Netherlands / T. Carlstrom: General Atomics, P.O. Box 85608, San Diego, California 92186-5608 / D. Johnson: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (literal)
Titolo
  • High resolution Thomson scattering for Joint European Torus (JET) (literal)
Abstract
  • A Thomson scattering system is being developed for Joint European Torus with 15 mm spatial resolution and a foreseen accuracy for temperature better than 15% at a density of 10(19) m(-3). This resolution is required at the internal transport barrier and edge pedestal and it can not be fully achieved with the present light detection and ranging systems. The laser for this system is Nd:YAG, 5 Joule, 20 Hz. Scattering volumes from R=2.9 m to R=3.9 m are imaged onto 1 mm diameter fibers, with F/25 collection aperture. Two fibers are used per scattering volume. Using optical delay lines, three scattering volumes are combined in each of the 21 filter polychromators. The signals are recorded with transient digitizers, which allow the combined time delayed signals to be resolved. Knowledge of the time delay between signals allows the use of correlation techniques in determining signal levels. The ac output of the amplifier is used, which tolerates a higher level of background signal without affecting dynamic range. The noise resulting from plasma light is determined directly. (C) 2004 American Institute of Physics. (literal)
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