Počet záznamů: 1

A survey of electron Bernstein wave heating and current drive potential for spherical tokamaks

  1. 1.
    0362721 - UFP-V 2012 RIV AT eng J - Článek v odborném periodiku
    Urban, Jakub - Decker, J. - Peysson, Y. - Preinhaelter, Josef - Shevchenko, V. - Taylor, G. - Vahala, L. - Vahala, G.
    A survey of electron Bernstein wave heating and current drive potential for spherical tokamaks.
    Nuclear Fusion. Roč. 51, č. 8 (2011), 083050-083050 ISSN 0029-5515
    Grant CEP: GA ČR GA202/08/0419; GA MŠk 7G10072
    Výzkumný záměr: CEZ:AV0Z20430508
    Klíčová slova: spherical tokamak * electron Bernstein wave (EBW) * heating * current drive * electron cyclotron wave
    Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
    Impakt faktor: 4.090, rok: 2011
    http://iopscience.iop.org/0029-5515/51/8/083050/pdf/0029-5515_51_8_083050.pdf http://iopscience.iop.org/0029-5515/51/8/083050/pdf/0029-5515_51_8_083050.pdf

    The electron Bernstein wave (EBW) is typically the only wave in the electron cyclotron (EC) range that can be applied in spherical tokamaks for heating and current drive (H&CD). Spherical tokamaks (STs) operate generally in high-β regimes, in which the usual EC O- and X-modes are cut off. In this case, EBWs seem to be the only option that can provide features similar to the EC waves—controllable localized H&CD that can be used for core plasma heating as well as for accurate plasma stabilization. The EBW is a quasi-electrostatic wave that can be excited by mode conversion from a suitably launched O- or X-mode; its propagation further inside the plasma is strongly influenced by the plasma parameters. These rather awkward properties make its application somewhat more difficult. In this paper we perform an extensive numerical study of EBW H&CD performance in four typical ST plasmas (NSTX L- and H-mode, MAST Upgrade, NHTX).
    Trvalý link: http://hdl.handle.net/11104/0198964