Comprehensive control of resistive wall modes in DIII-D advanced tokamak plasmas (Articolo in rivista)

Type
Label
  • Comprehensive control of resistive wall modes in DIII-D advanced tokamak plasmas (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0029-5515/49/12/125003 (literal)
Alternative label
  • M. Okabayashi; I.N. Bogatu; M.S. Chance; M.S. Chu; A.M. Garofalo; Y. In; G.L. Jackson; R.J. La Haye; M.J. Lanctot; J. Manickam; L. Marrelli; P. Martin; G.A. Navratil; H. Reimerdes; E.J. Strait; H. Takahashi; A.S. Welander; T. Bolzonella; R.V. Budny; J.S. Kim; R. Hatcher; Y.Q. Liu; T.C. Luce (2009)
    Comprehensive control of resistive wall modes in DIII-D advanced tokamak plasmas
    in Nuclear fusion
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • M. Okabayashi; I.N. Bogatu; M.S. Chance; M.S. Chu; A.M. Garofalo; Y. In; G.L. Jackson; R.J. La Haye; M.J. Lanctot; J. Manickam; L. Marrelli; P. Martin; G.A. Navratil; H. Reimerdes; E.J. Strait; H. Takahashi; A.S. Welander; T. Bolzonella; R.V. Budny; J.S. Kim; R. Hatcher; Y.Q. Liu; T.C. Luce (literal)
Pagina inizio
  • 125003 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 49 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • Article Number 125003, Issue 12 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 16 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Princeton Plasma Physics Laboratory, PO Box 451, Princeton, NJ 08543-0451, USA / FAR-TECH, Inc., 3550 General Atomics Ct, Building 15, Suite 155, San Diego, CA 92121, USA / General Atomics, PO Box 85508, San Diego, CA 92186-5608, USA / Columbia University, 2960 Broadway, New York, NY 10027-6902, USA / Consorzio RFX, Corso Uniti 4, 35127 Padova, Italy / Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon, OX14 3DB, UK (literal)
Titolo
  • Comprehensive control of resistive wall modes in DIII-D advanced tokamak plasmas (literal)
Abstract
  • The resistive wall mode (RWM) and neoclassical tearing mode (NTM) have been simultaneously suppressed in the DIII-D for durations of over 2 s at beta values 20% above the no-wall limit with modest electron cyclotron current drive and very low plasma rotation. The achieved plasma rotation was significantly lower than reported previously. However, in this regime where stable operation is obtained, it is not unconditionally guaranteed. Various MHD activities, such as edge localized modes (ELMs) and fishbones, begin to couple to the RWM branch near the no-wall limit; feedback has been useful in improving the discharge stability to such perturbations. Simultaneous operation of slow dynamic error field correction and fast feedback suppressed the pile-up of ELM-induced RWM at a series of ELM events. This result implies that successful feedback operation requires not only direct feedback against unstable RWM but also careful control of MHD-induced RWM aftermath, which is the dynamical response to a small-uncorrected error field near the no-wall beta limit. These findings are extremely useful in defining the challenge of control of the RWM and NTM in the unexplored physics territory of burning plasmas in ITER. (literal)
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