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Collisional transport and poloidal asymmetry distribution of impurities in tokamak plasmas, with application to WEST

Abstract : We report in this contribution on the development of an analytic model for a selfconsistent determination of the poloidal asymmetry, collisional flux and steady state profile of heavy impurities [1]. The model is compared with nonlinear axisymmetric simulations with the XTOR code [2, 3, 4], and with computations using the drift-kinetic code NEO [5]. An application to Tungsten peaking in the WEST tokamak under Ion Cyclotron Resonance Heating (ICRH) exemplifies the complex balance between accumulation and expulsion forces at play.
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Submitted on : Friday, June 4, 2021 - 10:41:17 AM
Last modification on : Tuesday, September 28, 2021 - 5:54:03 PM
Long-term archiving on: : Sunday, September 5, 2021 - 6:47:19 PM

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  • HAL Id : cea-03249460, version 1

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P Maget, P Manas, R Dumont, J-F Artaud, C Bourdelle, et al.. Collisional transport and poloidal asymmetry distribution of impurities in tokamak plasmas, with application to WEST. IAEA FEC 2020 - 28th IAEA Fusion Energy Conference, May 2021, Nice (E-Conference), France. ⟨cea-03249460⟩

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