http://www.cnr.it/ontology/cnr/individuo/prodotto/ID23087

ECRH antenna at 140 GHz on FTU tokamak (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

ECRH antenna at 140 GHz on FTU tokamak (Articolo in rivista) (literal)

Anno

2001-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1016/S0920-3796(00)00517-2 (literal)

Alternative label

Bruschi A. 1, Bozzi R. 1, Cirant S. 1, Gandini F. 1, Granucci G. 1, Mantovani S. 2, Mellera V. 1, Muzzini V. 1, Nardone A. 1, Nowak S. 1, Simonetto A. 1, Sozzi C. 1 and Spinicchia N. 1 (2001)
ECRH antenna at 140 GHz on FTU tokamak
in Fusion engineering and design
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Bruschi A. 1, Bozzi R. 1, Cirant S. 1, Gandini F. 1, Granucci G. 1, Mantovani S. 2, Mellera V. 1, Muzzini V. 1, Nardone A. 1, Nowak S. 1, Simonetto A. 1, Sozzi C. 1 and Spinicchia N. 1 (literal)

Pagina inizio

431 (literal)

Pagina fine

441 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

Pubblicazione su rivista internazionale specialistica (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://www.sciencedirect.com/science/article/pii/S0920379600005172 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

53 (literal)

Rivista

Fusion engineering and design (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

11 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

1-4 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto

Descrizione dell'antenna quasi ottica per il lancio di 1.6MW a 140 GHz nel tokamak FTU. (literal)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

1 IFP CNR, EURATOM/ENEA-CNR Assoc., Milano, Italy 2 CRE, EURATOM/ENEA Assoc., Frascati, Italy (literal)

Titolo

ECRH antenna at 140 GHz on FTU tokamak (literal)

Abstract

The quasi-optical beam launching antenna for the Electron Cyclotron Resonance Heating (ECRH) experiment at 140 GHz, 1.6 MW to the plasma, on the Frascati Tokamak Upgrade (FTU) has been successfully exploited in experimental operations. It provides four beams 400 kW each, with independent poloidal and toroidal steering capability and a maximum power density of 60 kW/cm2 at the plasma edge. The beam radius in the plasma is about 20 mm, allowing a very high localisation of the absorbed power. The main characteristics of the antenna are: - Four movable launching mirrors under vacuum, far from the plasma edge (no movable parts near the plasma). - Oblique toroidal injection capability at fixed angles obtained with reflections on two fixed stainless steel plates, gold plated, inserted at the sides of the port. - Vacuum gate separating the main vacuum from the appendix containing the two matching mirrors and the barrier window (for safety and maintenance). - All movements are transferred outside the vacuum chamber through bellows and linear displacement. Actuators and encoders are in air. - Full capability to adjust small movements of the machine during cool-down and warm-up, preserving the alignment. Pattern measurements at low power before installation were performed to characterise the effects of the real system on the ideal shape and the polarisation of the launched beams, with particular attention to diffraction effects. Final control of the shape of the beams and the alignment of the mirrors in the system is performed after installation, under vacuum and with the tokamak at liquid nitrogen temperature, with the aid of a retractable probe and using a thermopile as the RF detector. (literal)

Prodotto di