|Title||First principle integrated modeling of multi-channel transport including Tungsten in JET|
|Publication Type||Journal Article|
|Year of Publication||2018|
|Authors||S. Breton, F. Casson, C. Bourdelle, J. Citrin, Y. Baranov, Y. Camenen, C. Challis, G. Corrigan, J. Garcia, L. Garzotti, S. Henderson, F. Koechl, E. Militello-Asp, M. O'Mulane, T. Putterich, M. Sertoli, M. Valisa|
For the first time, over five confinement times, the self-consistent flux driven time evolution of heat, momentum transport and particle fluxes of electrons and multiple ions including Tungsten (W) is modeled within the integrated modeling platform JETTO [Romanelli M et al PFR 2014], using first principle-based codes: namely, QuaLiKiz [Bourdelle C. et al. PPCF 2016] for turbulent transport and NEO [Belli E A and Candy J PPCF 2008] for neoclassical transport. For a JET-ILW pulse, the evolution of measured temperatures, rotation and density profiles are successfully predicted and the observed W central core accumulation is obtained. The poloidal asymmetries of the W density modfying its neoclassical and turbulent transport are accounted for. Actuators of the W core accumulation are studied: removing the central particle source annihilates the central W accumulation whereas the suppression of the torque reduces significantly the W central accumulation. Finally, the presence of W slightly reduces main ion heat turbulent transport through complex nonlinear interplays involving radiation, effective charge impact on ITG and collisionality.
|Alternate Title||Nucl. Fusion|
Go back one page.