Počet záznamů: 1

Model for screening of resonant magnetic perturbations by plasma in a realistic tokamak geometry and its impact on divertor strike points

  1. 1.
    0366763 - UFP-V 2012 RIV NL eng J - Článek v odborném periodiku
    Cahyna, Pavel - Nardon, E.
    Model for screening of resonant magnetic perturbations by plasma in a realistic tokamak geometry and its impact on divertor strike points.
    Journal of Nuclear Materials. Roč. 415, č. 1 (2011), S927-S931 ISSN 0022-3115.
    [International Conference on Plasma-Surface Interactions in Controlled Fusion Device/19th./. San Diego, 24.05.2010-28.05.2010]
    Grant CEP: GA MŠk 7G09042; GA MŠk LA08048
    Výzkumný záměr: CEZ:AV0Z20430508
    Klíčová slova: tokamaks * ELM control * resonant magnetic perturbations * divertor
    Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
    Impakt faktor: 2.052, rok: 2011
    http://dx.doi.org/10.1016/j.jnucmat.2011.01.117

    This work addresses the question of the relation between strike-point splitting and magnetic stochasticity at the edge of a poloidally diverted tokamak in the presence of externally imposed magnetic perturbations. More specifically, ad-hoc helical current sheets are introduced in order to mimic a hypothetical screening of the external resonant magnetic perturbations by the plasma. These current sheets, which suppress magnetic islands, are found to reduce the amount of splitting expected at the target, which suggests that screening effects should be observable experimentally. Multiple screening current sheets reinforce each other, i.e. less current relative to the case of only one current sheet is required to screen the perturbation.
    Trvalý link: http://hdl.handle.net/11104/0201635