http://www.cnr.it/ontology/cnr/individuo/prodotto/ID23133

Development on JET of advanced tokamak operations for ITER (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

Development on JET of advanced tokamak operations for ITER (Articolo in rivista) (literal)

Anno

2006-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1088/0029-5515/46/2/004 (literal)

Alternative label

A.A. Tuccillo1, F. Crisanti1, X. Litaudon2, Yu.F. Baranov3, A. Becoulet2, M. Becoulet2, L. Bertalot1, C. Castaldo1, C.D. Challis3, R. Cesario1, M.R. De Baar4, P.C. de Vries3,4, B. Esposito1, D. Frigione1, L. Garzotti5, E. Giovannozzi1, C. Giroud3, G. Gorini6, C. Gormezano1, N.C. Hawkes3, J. Hobirk7, F. Imbeaux2, E. Joffrin2, P.J. Lomas3, J. Mailloux3, P. Mantica6, M.J. Mantsinen8, D. Mazon2, D. Moreau2,9, A. Murari5, V. Pericoli-Ridolfini1, F. Rimini2, A.C.C. Sips7, C. Sozzi6, O. Tudisco1, D. Van Eester10, K-D. Zastrow3 and JET-EFDA work-programme contributors (2006)
Development on JET of advanced tokamak operations for ITER
in Nuclear fusion; IOP Publishing Ltd. (Institute of Physics Publishing Ltd), "Bristol ; London" (Regno Unito)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

A.A. Tuccillo1, F. Crisanti1, X. Litaudon2, Yu.F. Baranov3, A. Becoulet2, M. Becoulet2, L. Bertalot1, C. Castaldo1, C.D. Challis3, R. Cesario1, M.R. De Baar4, P.C. de Vries3,4, B. Esposito1, D. Frigione1, L. Garzotti5, E. Giovannozzi1, C. Giroud3, G. Gorini6, C. Gormezano1, N.C. Hawkes3, J. Hobirk7, F. Imbeaux2, E. Joffrin2, P.J. Lomas3, J. Mailloux3, P. Mantica6, M.J. Mantsinen8, D. Mazon2, D. Moreau2,9, A. Murari5, V. Pericoli-Ridolfini1, F. Rimini2, A.C.C. Sips7, C. Sozzi6, O. Tudisco1, D. Van Eester10, K-D. Zastrow3 and JET-EFDA work-programme contributors (literal)

Pagina inizio

214 (literal)

Pagina fine

224 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://iopscience.iop.org/0029-5515/46/2/004/ (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

46 (literal)

Rivista

Nuclear fusion (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

11 (literal)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

1. CR ENEA Frascati, ENEA, EURATOM Assoc, I-00044 Frascati, Italy 2. Ctr Cadarache, CEA DSM DRFC, CEA, EURATOM Assoc, F-13108 St Paul Les Durance, France 3. UKAEA EURATOM Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England 4. TEC, EURATOM Assoc, FOM, NL-3430 BE Nieuwegein, Netherlands 5. ENEA, EURATOM Assoc, I-35127 Padua, Italy 6. IFP CNR, Assoc EURATOM ENEA, I-20125 Milan, Italy 7. Max Planck Inst Plasma Phys, EURATOM Assoc, D-8046 Garching, Germany 8. Helsinki Univ Technol, TEKES, EURATOM Assoc, FIN-02044 Helsinki, Finland 9. EFDA JET CSU, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England 10. TEC, Assoc Euratom Belgian State, LPP ERM KMS, B-1000 Brussels, Belgium (literal)

Titolo

Development on JET of advanced tokamak operations for ITER (literal)

Abstract

Recent research on advanced tokamak in JET has focused on scenarios with both monotonic and reversed shear qprofiles having plasma parameters as relevant as possible for extrapolation to ITER.Wide internal transport barriers (ITBs), r/a = 0.7, are formed at ITER relevant triangularity delta=0.45 and moderate plasma current, I = 1.5 2.5 MA, with ne/n_G = 60% when ELMs are moderated by Ne injection. At higher current (I<3.5 MA, delta=0.25) wide ITBs sitting at r/a > 0.5, in the positive shear region, have been developed. Generally MHD events terminate these barriers otherwise limited in strength by power availability. ITBs with core density close to Greenwald value, Te = Ti and low toroidal rotation (4 times lower than standard ITBs) are obtained in plasma target preformed by opportune timing of lower hybrid current drive (LHCD), pellet injection and a small amount of NBI power. Wide ITBs, r/a = 0.6, of moderate strength, can be sustained without impurities accumulation for a time close to neoclassical resistive time in 3 T/1.8MA discharges that exhibit reversed magnetic shear profiles and type-III ELMy edge. These discharges have been extended to the maximum duration allowed by JET subsystems (20 s) bringing to the record of injected energy in a JET discharge: E = 330 MJ. Portability of ITB physics has been addressed through dedicated similarity experiments. The ITB is identified as a layer of reduced diffusivity studying the propagation of the heat wave generated by modulating the ICRF mode conversion (MC) electron heating. Impressive results, Q_DT = 0.25, are obtained in these deuterium discharges with 3He minority when the MC layer is located in the core. The ion behaviour has been investigated in pure LHCD electron ITBs optimizing the 3He minority concentration for direct ion heating. Preliminary results of particle transport, studied via injection of a trace of tritium and an ArNe mixture, will be presented. (literal)

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