http://www.cnr.it/ontology/cnr/individuo/prodotto/ID81158
Advanced Optics for the Remote Steering ITER ECRH Upper Launcher (Contributo in atti di convegno)
- Type
- Label
- Advanced Optics for the Remote Steering ITER ECRH Upper Launcher (Contributo in atti di convegno) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1088/1742-6596/25/1/015 (literal)
- Alternative label
Bruschi A., Cirant S., Moro A., Platania P., Sozzi C. (2005)
Advanced Optics for the Remote Steering ITER ECRH Upper Launcher
in Third IAEA Technical Meeting on ECRH Physics and Technology in ITER, Como
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Bruschi A., Cirant S., Moro A., Platania P., Sozzi C. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://iopscience.iop.org/1742-6596/25/1/015/ (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#volumeInCollana
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- Journal of Physics Conference Series 25, 112-119 (2005) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Istituto di Fisica del Plasma, Associazione EURATOM-ENEA-CNR, via Cozzi 53, 20125 Milano, Italy (literal)
- Titolo
- Advanced Optics for the Remote Steering ITER ECRH Upper Launcher (literal)
- Abstract
- Abstract. The optics of the ECRH Upper Launcher in ITER based on the Remote Steering
concept needs special attention, since any focussing element in front of the waveguide has
combined effects on the range of steering angles achievable and the beam width in the plasma
region. The effects are studied in detail for a setup composed by 8 beams per port (three ports),
for a spherical and a hyperbolic mirror surface. Gaussian beam analysis is compared to beam
pattern calculations with the optical physics code GRASP, in order to verify the validity of
gaussian optics approximation. The standard description with simply astigmatic beams, not
adequate in more complex systems as the proposed two-mirror set-up, requires approximations,
which are compared with the generalized astigmatic beam description. The ohmic losses at the
end mirrors and the related localized heating due to the very large power density cause
deformations that depends on the design of the cooling circuit. The distortion of the beam
shape has been evaluated in a realistic case of mirror cooling with a small-channel system. The
quantification of the effect depends on the precise evaluation ohmic losses and their
enhancement in the long term due to the surface deterioration. (literal)
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- Autore CNR
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