Community Research and Development Information Service - CORDIS

FP7

JET new diagnostic capability on the route to ITER

Funded under: FP7-EURATOM

Abstract

The JET scientific programme is directed towards the development of ITER relevant scenarios. In support of this, significant effort has been made to develop diagnostics to better characterise the power deposition on the plasma facing components, to investigate in more detail the radiation losses particularly in the divertor region and to better detect Magneto Hydrodynamic Modes (MHD) instabilities and their effects on fast ion confinement. A new wide-angle infrared camera provides for the first time the opportunity to perform infrared thermography in the JET main chamber, even during fast events like ELMs and disruptions. A completely new bolometric system, with better spatial resolution particularly in the divertor, is now used to investigate the total radiation losses and their influence on the ELM behaviour. A new set of microwave waveguides has improved by 20 dB the signal to noise ratio of the JET X-mode reflectometers, that are now routinely used to detect MHD instabilities and in particular to localise the location of Alfvén Eigenmodes. This improved diagnostic capability to monitor MHD instabilities is complemented by two new diagnostics to detect lost fast particles. Both the new scintillator probe and a poloidal array of Faraday cups have already shown clear correlations between MHD activity and ion losses at the edge.

Additional information

Authors: MURARI A, Associazione EURATOM-ENEA per la Fusione, Consorzio RFX, Padova (IT);EDLINGTON T, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);ANDREW P, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);KIPTILY V, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);FESSEY J, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);BRZOZOWSKI J, Alfvén Laboratory, KTH, EURATOM-VR Association (SE);DE LA LUNA E, Asociación EURATOM-CIEMAT para Fusión, CIEMAT, Madrid (ES);ARNOUX G, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);GAUTHIER E, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);LOARER T, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);CECIL F E, Colorado School of Mines, Golden (US);CUPIDO L, CFN, Associacao IST/EURATOM, Lisboa (PT);HACQUIN S, CFN, Associacao IST/EURATOM, Lisboa (PT);DARROW D, Princeton Plasma Physics Laboratory, Princeton (US);HILL K, Princeton Plasma Physics Laboratory, Princeton (US);HUBER A, Institut für Plasmaphysik, Forschungszentrum Jülich, Association EURATOM/FZJ, Trilateral Euregio Cluster, Jülich (DE);MCCORMICK K, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);REICH M, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE)
Bibliographic Reference: An article published in: Fusion Engineering and Design, Article in Press, Corrected Proof (2007)
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/doi:10.1016/j.fusengdes.2007.03.022
Record Number: 200719363 / Last updated on: 2007-09-06
Category: PUBLICATION
Original language: en
Available languages: en