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  Progress towards steady-state operation and real-time control of internal transport barriers in JET

Litaudon, X., Becoulet, A., Crisanti, F., Wolf, R. C., Baranov, Y. F., Barbato, E., et al. (2003). Progress towards steady-state operation and real-time control of internal transport barriers in JET. Nuclear Fusion, 43(7), 565-572. doi:10.1088/0029-5515/43/7/309.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0027-2D45-6 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0027-2D6E-C
Genre: Journal Article

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 Creators:
Litaudon, X.1, Author
Becoulet, A.1, Author
Crisanti, F.1, Author
Wolf, R. C.2, Author           
Baranov, Yu. F.1, Author
Barbato, E.1, Author
Becoulet, M.1, Author
Budny, R.1, Author
Castaldo, C.1, Author
Cesario, R.1, Author
Challis, C. D.1, Author
Conway, G. D.3, Author           
De Baar, M. R.1, Author
De Vries, P.1, Author
Dux, R.4, Author           
Eriksson, L. G.1, Author
Esposito, B.1, Author
Felton, R.1, Author
Fourment, C.1, Author
Frigione, D.1, Author
Garbet, X.1, AuthorGiannella, R.1, AuthorGiroud, C.1, AuthorGorini, G.1, AuthorHawkes, N. C.1, AuthorHellsten, T.1, AuthorHender, T. C.1, AuthorHennequin, P.1, AuthorHogeweij, G. M. D.1, AuthorHuysmans, G. T. A.1, AuthorImbeaux, F.1, AuthorJoffrin, E.1, AuthorLomas, P. J.1, AuthorLotte, P.1, AuthorMaget, P.1, AuthorMailloux, J.1, AuthorMantica, P.1, AuthorMantsinen, M. J.1, AuthorMazon, D.1, AuthorMoreau, D.1, AuthorParail, V.5, Author           Pericoli, V.1, AuthorRachlew, E.1, AuthorRiva, M.1, AuthorRimini, F.1, AuthorSarazin, Y.1, AuthorStratton, B. C.1, AuthorTala, T. J. J.1, AuthorTresset, G.1, AuthorTudisco, O.1, AuthorZabeo, L.1, AuthorZastrow, K.-D.4, Author           JET-EFDA Contributors1, Author more..
Affiliations:
1Association EURATOM-CEA, CEA Cadarache, F-13108 St Paul lez Durance, France; Associazione EURATOM-ENEA sulla Fusione, Centre Ricerche Frascati, Italy; Institut für Plasmaphysik, Association EURATOM-FZJ, D-52425 Jülich, Germany; UKAEA-EURATOM Association, Culham Science Centre, Abingdon, OX14 3DB, UK; Princeton Plasma Physics Laboratory, PO Box 451, Princeton, NJ 08543, USA; Ass. EURATOM-FOM, TEC, Cluster, 3430 BE Nieuwegein, The Netherlands; Instituto di Fisica del Plasma, EURATOM-ENEA-CNR Association, Milan, Italy; Physics Deptartment, KTH, Association EURATOM/VR, S-10044 Stockholm, Sweden; Association EURATOM-TEKES, VTT Chemical Technology, FIN-02044, Finland, ou_persistent22              
2Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856291              
3Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856295              
4Experimental Plasma Physics 4 (E4), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856293              
5Tokamak Theory (TOK), Max Planck Institute for Plasma Physics, Max Planck Society

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 Abstract: In JET, advanced tokamak research mainly focuses on plasmas with internal transport barriers (ITBs) that are strongly influenced by the current density profile. A previously developed optimized shear regime with low magnetic shear in the plasma centre has been extended to deeply negative magnetic shear configurations. High fusion performance with wide ITBs has been obtained transiently with negative central magnetic shear configuration: HIPB98(y,2) ~ 1.9, βN = 2.4 at Ip = 2.5 MA. At somewhat reduced performance, electron and ion ITBs have been sustained in full current drive operation with 1 MA of bootstrap current: HIPB98(y,2) ~ 1, βN = 1.7 at Ip = 2.0 MA. The ITBs were maintained for up to 11 s for the latter case. This duration, much larger than the energy confinement time (37 times larger), is already approaching a current resistive time. New real-time measurements and feedback control algorithms have been developed and implemented in JET for successfully controlling the ITB dynamics and the current density profile in the highly non-inductive current regime.

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Language(s): eng - English
 Dates: 2003
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 56137
DOI: 10.1088/0029-5515/43/7/309
URI: http://stacks.iop.org/0029-5515/43/565
 Degree: -

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Title: Nuclear Fusion
  Alternative Title : Nucl. Fusion
Source Genre: Journal
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Publ. Info: Copyright © Institute of Physics and IOP Publishing Limited 2003
Pages: - Volume / Issue: 43 (7) Sequence Number: - Start / End Page: 565 - 572 Identifier: -