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          Institute: MPI für Plasmaphysik     Collection: Articles, Books, Inbooks     Display Documents

ID: 56330.0, MPI für Plasmaphysik / Articles, Books, Inbooks
Heating, current drive and energetic particle studies on JET in preparation of ITER operation
Authors:Noterdaeme, J.-M.; Budny, R.; Cardinali, A.; Castaldo, C.; Cesario, R.; Crisanti, F.; deGrassie, J.; D'Ippolito, D. A.; Durodié, F.; Ekedahl, A.; Figueiredo, A.; Ingesson, C.; Joffrin, E.; Hartmann, D.; Heikkinen, J.; Hellsten, T.; Jones, T.; Kiptily, V.; Lamalle, P.; Litaudon, X.; Nguyen, F.; Mailloux, J.; Mantsinen, M.; Mayoral, M.; Mazon, D.; Meo, F.; Monakhov, I.; Myra, J. R.; Paméla, J.; Pericoli, V.; Petrov, Yu.; Sauter, O.; Sarazin, Y.; Sharapov, S. E.; Tuccillo, A. A.; van Eester, D.; JET EFDA Contributors
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Nuclear Fusion
Journal Abbrev.:Nucl. Fusion
Issue / Number:3
Start Page:202
End Page:209
Copyright:Copyright © Institute of Physics and IOP Publishing Limited 2003
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:This paper summarizes the recent work on JET in the three areas of heating, current drive and energetic particles. The achievements have extended the possibilities of JET, have a direct connection to ITER operation and provide new and interesting physics. Toroidal rotation profiles of plasmas heated far off axis with little or no refuelling or momentum input are hollow with only small differences on whether the power deposition is located on the low field side or on the high field side. With LH current drive the magnetic shear was varied from slightly positive to negative. The improved coupling (through the use of plasma shaping and CD4) allowed up to 3.4 MW of PLH in internal transport barrier (ITB) plasmas with more than 15 MW of combined NBI and ICRF heating. The q-profile with negative magnetic shear and the ITB could be maintained for the duration of the high heating pulse (8 s). Fast ions have been produced in JET with ICRF to simulate alpha particles: by using third harmonic 4He heating, beam injected 4He at 120 kV were accelerated to energies above 2 MeV, taking advantage of the unique capability of JET to use NBI with 4He and to confine MeV class ions. ICRF heating was used to replicate the dynamics of alpha heating and the control of an equivalent Q = 10 `burn' was simulated.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Plasmaphysik/Technology
External Affiliations:PPPL Princeton, NJ, USA; ENEA, Euratom Association, Frascati, Italy; General Atomics, San Diego, CA, USA; Lodestar Research Corporation, Boulder, CO, USA; Association Euratom-Belgian State, LPP-ERM/KMS, Belgium; Association Euratom-CEA, Cadarache, France; IST, Euratom Association, Portugal; FOM, Euratom Association, Nieuwegijn, The Netherlands; Association Euratom-Tekes, VTT Processes, Finland; NFR, Euratom Association, Sweden; EFDA-CSU JET, UK
13 UKAEA, Euratom Association, UK; Association Euratom-Tekes, Helsinki University of Technology, Finland; Prairie View A&M University, Prairie View, USA; CRPP, EPFL, Euratom Association, Lausanne, Switzerland
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