Impact of the ion-cyclotron-resonance location on poloidal asymmetries of impurity density in ICRF-heated rotating plasma

Impact of the ion-cyclotron-resonance location on poloidal asymmetries of impurity density in ICRF-heated rotating plasma

Impact of the ion-cyclotron-resonance location on poloidal asymmetries of impurity density in ICRF-heated rotating plasma 150 150 Mathew
CCFE-PR(16)54

Impact of the ion-cyclotron-resonance location on poloidal asymmetries of impurity density in ICRF-heated rotating plasma

The recently proposed set of zeroth-order moment equations to model poloidal density asymmetries induced by temperature anisotropies in rotating tokamak plasmas (R. Bilato et al., Nuclear Fusion 54 (2014) 072003) is here extended to account for the effects of the localization of the ion cyclotron (IC) resonance on the poloidal inhomogeneity of the density of the cyclotron-heated ion species . This additional effect has a significant impact on the poloidal density asymmetries due to radio-frequency (RF) heating, a key issue for high-Z impurity transport, leading, in particular, to a reduced ICRF heating impact on the in-out accumulation of high-Z impurities when the IC resonance is located on the high-field side.

Collection:
Journals
Journal:
Nuclear Fusion
Publisher:
IOP
Published date:
03/01/2017