Real-time fringe correction algorithm for the JET interferometer (Articolo in rivista)

Type
Label
  • Real-time fringe correction algorithm for the JET interferometer (Articolo in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.1593810 (literal)
Alternative label
  • P. Innocente; D. Mazon; E. Joffrin; M. Riva (2003)
    Real-time fringe correction algorithm for the JET interferometer
    in Review of scientific instruments
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • P. Innocente; D. Mazon; E. Joffrin; M. Riva (literal)
Pagina inizio
  • 3645 (literal)
Pagina fine
  • 3652 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://rsi.aip.org/resource/1/rsinak/v74/i8/p3645 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 74 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 8 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1: Associazione Euratom-ENEA sulla Fusione, Consorzio RFX, Padova, Italy / 2,3: Association Euratom-CEA, CEA Cadarache, F-13108, St. Paul lez Durance, France / 4: Associazione Euratom-ENEA sulla Fusione, C.R. Frascati, 00044 Frascati, Italy (literal)
Titolo
  • Real-time fringe correction algorithm for the JET interferometer (literal)
Abstract
  • On the JET facility, the line-integrated electron density is measured by a multichannel far-infrared (FIR) interferometer. The basic source of radiation is a deuterium cyanide laser (? = 195 ?m) measuring the density along four vertical and four nearly horizontal (lateral) channels. During high-density discharges the system suffers from fringe jumps that are manually partially corrected by an off-line program. This intermittent phenomenon prevents reliable usage of the measured line-integrated density in a real-time feedback controller. To solve this problem we have developed a method to correct the fringe jumps on the lateral channels in real time. The method uses the additional methyl alcohol laser (? = 118.8 ?m) interferometer present on the lateral channels to compensate the vibrations. The method has been successfully tested with off-line test data, before implementation on a VERSA Module Eurocard system for the real-time control of the JET discharges. (literal)
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