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LH power losses in front of the JET launcher

  • P. Jacquet
  • , G. Arnoux
  • , L. Colas
  • , L. Delpech
  • , A. Ekedahl
  • , D. Frigione
  • , M. Goniche
  • , K. Kirov
  • , F. Leguen
  • , J. Mailloux
  • , M. L. Mayoral
  • , J. Ongena
  • , V. Petrzilka
  • , C. Portafaix
  • , F. Rimini
  • Culham Centre for Fusion Energy
  • Commissariat à l'Énergie Atomique (CEA)
  • Associazione EURATOM-ENEA sulla Fusione
  • Institute of Plasma Physics, Academy of Sciences of the Czech Republic

Résultats de recherche: Chapitre dans un livre, un rapport, des actes de conférencesContribution à une conférenceRevue par des pairs

5 Citations (Scopus)

Résumé

In recent JET experiments, Lower Hybrid (LH) power losses in the Scrape-Off Layer (SOL) were characterized using infra-red (IR) thermography. Hot spots were observed on objects intercepting the field lines passing in front of the LH launcher, i.e. on poloidal limiters and on dumplates located at the top of the tokamak; their locations being in good agreement with magnetic field line tracing using the EFIT equilibrium code. The dumplate temperature was monitored while scanning the launcher position so that the radial distance between field lines intercepting the hot spots and the launcher was increased up to 3.5 cm. The dissipation layer in front of the launcher was estimated to be at least 3.5 cm wide, in agreement with recent measurements on Tore-Supra, but not with simple models that predict a dissipation layer in the mm range.

langue originaleAnglais
titreRadio Frequency Power in plasmas - Proceedings of the 18th Topical Conference
Pages399-402
Nombre de pages4
Les DOIs
étatPublié - 2009
Evénement18th Topical Conference on Radio Frequency Power in plasmas - Gent, Belgique
Durée: 24 juin 200926 juin 2009

Série de publications

NomAIP Conference Proceedings
Volume1187
ISSN (imprimé)0094-243X
ISSN (Electronique)1551-7616

Une conférence

Une conférence18th Topical Conference on Radio Frequency Power in plasmas
Pays/TerritoireBelgique
La villeGent
période24/06/0926/06/09

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