Low- and high-power measurements on a remote steering upper port launcher mockup for ITER (Contributo in atti di convegno)

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Label
  • Low- and high-power measurements on a remote steering upper port launcher mockup for ITER (Contributo in atti di convegno) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • Bongers, W.A.a , Graswinckel, M.F.a, Femández, A.b, Bruschi, A.c, Elzendoorn, B.S.Q.a, Heidinger, R.d, Schwoerer, K.e, Kruyt, O.G.a, Lamers, B.a, Lammerts, R.a, Piosczyk, B.f, Ronden, D.M.S.a, Rugebregt, M.R.a, Verhoeven, A.G.A.a (2005)
    Low- and high-power measurements on a remote steering upper port launcher mockup for ITER
    in 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005, Williamsburg, VA; United States, 19 - 23 September 2005
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bongers, W.A.a , Graswinckel, M.F.a, Femández, A.b, Bruschi, A.c, Elzendoorn, B.S.Q.a, Heidinger, R.d, Schwoerer, K.e, Kruyt, O.G.a, Lamers, B.a, Lammerts, R.a, Piosczyk, B.f, Ronden, D.M.S.a, Rugebregt, M.R.a, Verhoeven, A.G.A.a (literal)
Pagina inizio
  • 425 (literal)
Pagina fine
  • 426 (literal)
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  • IRMMW-THz 2005 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 2 (literal)
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  • a FOM Institute for Plasma Physics Rijnhuizen, Association EURATOM-FOM, Edisonbaan 14, 3430 BE Nieuwegein, Netherlands b CIEMAT, Madrid, Spain c IFP, Consiglio Nationale delle Ricerche Milano, Association EURATOMCNR, Italy d IHM, Forzschungszentrum Karlsruhe, Association EURATOM-FZK, Germany e IPF, Universität Stuttgart, Germany f IMF, Forzschungszentrum Karlsruhe, Association EURATOM-FZK, Germany (literal)
Titolo
  • Low- and high-power measurements on a remote steering upper port launcher mockup for ITER (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 0780393481 (literal)
Abstract
  • The Euratom association FOM-Rijnhuizen is developing a plug-in 170 GHz ECW launcher system for use in the upper-ports of ITER, based on the remote steering (RS) principle, designed 10 stabilise the Neoclassical Tearing Modes (NTM) at the q=3/2 and q=2/1 surfaces by inducing off-axis current drive. The launching system enables up to eight mm-wave beams per port plug to be directed from the feeding waveguides through corrugated square waveguides (? 44×44 mm2) inside the port plug to the plasma. A mock-up system has been manufactured, capable of vacuum & high-power short-pulse operation. The transmission line consists of a taper, to launch an HE11 mode in 63.5 mm circular corrugated waveguide. (The taper will be replaced by a gyrotron source in high power testing). The circular waveguide is used as input for the steering mechanism, housed in a vacuum vessel, which directs the beam under an angle between -12° and 12° through the CVD diamond window [1] into the copper square corrugated waveguide. Antenna patterns from the exit aperture of the square waveguide are scanned using a 3-axis scanner. Low-power measurements [3] are a preparatory phase for high-power tests, currently prepared in FZK. In the low-power measurements, waveguide performance will be inferred from antenna pattern measurements. Of interest are slight differences in beam parameters (angle, waist etc.) relative to the input beam. (literal)
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