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ID: 60379.0, MPI für Plasmaphysik / Conference Papers
Transient heat transport studies in JET conventional and advanced tokamak plasmas
Authors:Mantica, P.; Coffey, I.; Dux, R.; Garbet, X.; Garzotti, L.; Gorini, G.; Imbeaux, F.; Joffrin, E.; Kinsey, J.; Mantsinen, M.; Mooney, R.; Parail, V.; Sarazin, Y.; Sozzi, C.; Suttrop, W.; Tardini, G.; Van Eester, D.; JET EFDA Contributors
Language:English
Publisher:International Atomic Energy Agency
Place of Publication:Vienna
Date of Publication (YYYY-MM-DD):2003
Title of Proceedings:Fusion Energy 2002
Sequence Number:EX/P1-04
Physical Description:CD-ROM
Name of Conference/Meeting:19th Fusion Energy Conference
Place of Conference/Meeting:Lyon (FR)
(Start) Date of Conference/Meeting
 (YYYY-MM-DD):
2002-10-14
End Date of Conference/Meeting 
 (YYYY-MM-DD):
2002-10-19
Review Status:Internal review
Audience:Experts Only
Abstract / Description:Transient transport studies have long been recognised as a valuable complement to steady-state analysis for the understanding of transport mechanisms. Recently, transient transport data have proved to be a powerful tool to test the validity of physics-based transport models. In this paper, results from transient heat transport experiments in JET and their modelling will be presented. Edge cold pulses and modulation of ICRH (in Mode Conversion scheme) and NBI power have been used to provide detectable electron (Te) and ion (Ti) temperature perturbations. The experiments have been performed either in conventional plasma regimes or in Advanced Tokamak regimes, in the presence of an Internal Transport Barrier (ITB). In conventional plasmas issues such as stiffness, influence of Te/Ti, non-locality have been addressed. In ITB plasmas, insight into the physics of ITBs and the ITB formation mechanisms has been gained. The use of edge perturbations for ITB triggering has been explored. Modelling of the experimental results has been performed using both empirical models and physics-based models. Results of cold pulse experiments in ITBs have also been compared with turbulence simulations.
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Plasmaphysik/E4
External Affiliations:Istituto di Fisica del Plasma, EURATOM-ENEA-CNR Association, Milan, Italy ; Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon, Oxon, UK; Association Euratom-CEA, CEA Cadarache, St Paul-lez-Durance Cedex, France; Istituto Gas Ionizzati, EURATOM-ENEA-CNR Association, Padova, Italy; INFM, Dept. of Physics, Univ. of Milano-Bicocca, Milano, Italy; Lehigh University, Bethlehem, Pennsylvania, US; Helsinki Univ. of Technology, Association Euratom-Tekes, Finland; LPP-ERM/KMS, Association Euratom-Belgium, TEC, Brussels, Belgium
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