The Front Steering Launcher Design for the ITER ECRH Upper Port (Contributo in atti di convegno)

Type
Label
  • The Front Steering Launcher Design for the ITER ECRH Upper Port (Contributo in atti di convegno) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/1742-6596/25/1/018 (literal)
Alternative label
  • M A Henderson (1,6), R Chavan (1), R Heidinger (2), P Nikkola (1), G Ramponi (3), G Saibene (4), F Sanchez (1), O Sauter (1), A Serikov (2) and H Zohm (5) (2005)
    The Front Steering Launcher Design for the ITER ECRH Upper Port
    in Third IAEA Technical Meeting on ECRH Physics and Technology in ITER, Como
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • M A Henderson (1,6), R Chavan (1), R Heidinger (2), P Nikkola (1), G Ramponi (3), G Saibene (4), F Sanchez (1), O Sauter (1), A Serikov (2) and H Zohm (5) (literal)
Pagina inizio
  • 143 (literal)
Pagina fine
  • 150 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/1742-6596/25/1/018 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • Third IAEA Technical Meeting on ECRH Physics and Technology in ITER (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 25 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana
  • 25 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • Journal of Physics Conference Series 25, 143-150 (2005) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) CRPP, Association EURATOM- Confédération Suisse, EPFL, CH-1015 Lausanne, Switzerland (2) Forschungszentrum Karlsruhe, Association FZK - EURATOM, D-76021 Karlsruhe, Germany (3) Istituto di Fisica del Plasma, EURATOM- ENEA-CNR Association, 20125 Milano, Italy (4) EFDA Close Support Unit, Boltzmannstrasse 2, D-85748 Garching, Germany (5) IPP-Garching, Max-Planck-Institut für Plasmaphysik, D-85748 Garching, Germany (6) To whom any correspondence should be addressed (literal)
Titolo
  • The Front Steering Launcher Design for the ITER ECRH Upper Port (literal)
Abstract
  • The ECRH ITER upper port antenna's role is to stabilize the neoclassical tearing mode (NTM) on either the q = 2 or 3/2 rational flux surfaces, which requires a narrow current deposition profile (jCD) over a wide range along the resonance surfaces. The width of jCD should be equivalent to the marginal island width to fully stabilise the NTM. Two antenna concepts are under consideration for the upper port launcher: front steering (FS) and remote steering (RS). The FS launcher decouples the steering and focusing aspects using a two mirror system (one focusing and one steering), achieving a wider steering range and higher current density for NTM stabilisation than required by ITER, offering a threefold increase in NTM stabilization efficiency over the RS launcher. The improved physics performance has motivated the further design study of the FS launcher aiming toward a build to print launcher. The present design is compatible with >=2.0 MW CW operation and 8 beams per port plug. A frictionless backlashfree system is envisioned for the steering mechanism. An overview of the launcher design, the calculated physics performance and the possibility of using the upper port launcher for extended physics applications (beyond NTM stabilisation) are discussed. (literal)
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