Toroidal modeling of plasma response and resonant magnetic perturbation field penetration

0388717 - ÚFP 2013 RIV GB eng J - Článek v odborném periodiku
Liu, Y.Q. - Kirk, A. - Sun, Y. - Cahyna, Pavel - Chapman, I.T. - Denner, P. - Fishpool, G. - Garofalo, A.M. - Harrison, J.R. - Nardon, E.
Toroidal modeling of plasma response and resonant magnetic perturbation field penetration.
Plasma Physics and Controlled Fusion. Roč. 54, č. 12 (2012), s. 124013-124013. ISSN 0741-3335. E-ISSN 1361-6587
Výzkumný záměr: CEZ:AV0Z20430508
Klíčová slova: tokamak * resonant magnetic perturbation * neoclassical toroidal viscosity
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 2.369, rok: 2012
http://iopscience.iop.org/0741-3335/54/12/124013/pdf/0741-3335_54_12_124013.pdf

The penetration dynamics of the resonant magnetic perturbation (RMP) field is simulated in the full toroidal geometry, under realistic plasma conditions in MAST experiments. The physics associated with several aspects of the RMP penetration-the plasma response and rotational screening, the resonant and non-resonant torques and the toroidal momentum balance-are highlighted. In particular, the plasma response is found to significantly amplify the non-resonant component of the RMP field for some of the MAST plasmas. A fast rotating plasma, in response to static external magnetic fields, experiences a more distributed electromagnetic torque due to the resonance with continuum waves in the plasma. At fast plasma flow (such as for the MAST plasma), the electromagnetic torque is normally dominant over the neoclassical toroidal viscous (NTV) torque. However, at sufficiently slow plasma flow, the NTV torque can play a significant role in the toroidal momentum balance, thanks to the precession
Trvalý link: http://hdl.handle.net/11104/0217627