Post-doctoral position offer in numerical modelling of tokamak edge plasma fluid simulations: inclusion of kinetic effects


Duration: 1 year

Period: to be started during 2021

Location: M2P2 laboratory, Aix-Marseille University, CNRS, Centrale Marseille, France

Gross salary: from 2162 € to 2361 €/month depending on qualification and experience

Research project and job description

Title: Numerical modelling of non-local transport in edge tokamak plasmas and investigation of the impact on target heat loads. Application to WEST and ITER tokamaks.

Among the open questions to be addressed by future ITER experiments, the control of heat and particle fluxes on the tokamak walls at high heat confinement performance is a critical issue in achieving burning plasma conditions. This calls for the design of optimized operation scenarios to control the heat flow from the thermonuclear source to the divertor that will be based on extrapolation from experiments on present devices like WEST as well as on numerical simulation predictions. Indeed, modelling heat transport in edge tokamak plasma is a crucial issue for predictions of power loads on divertor targets. In fact, the rapid variation of plasma collisionality in this region spontaneously generates suprathermal populations, which in turn drive so-called non-local transport properties. Including these features in present numerical tools is of primary importance for improving their predictive capabilities.

A one-year postdoctoral position (renewable) is opened at the M2P2 laboratory in Marseille, in close connection with the research group on fusion modelling at CEA Cadarache to develop the numerical modelling of this problem. The candidate will work on the suite of codes SOLEDGE-EIRENE (Bufferand et al. Nuclear Fusion 2015), which is a state-of-the art numerical platforms developed by project partners to simulate transport in the edge of tokamaks. A number of kinetic effects relevant for a proper description of heat transport will be considered and included in SOLEDGE fluid code, e.g. non-local closures for the parallel heat transport extending results already proposed in 1D by (H. Bufferand et al, Contrib. Plasma Physics 2018), or the possibility of implementing two electron populations, one hot and one cold. All these effects will also be quantified by cross comparisons with kinetic solvers, also developed in the team. A close connection with experiments on WEST ( operated by CEA at Cadarache is also expected. In particular, the post-doc will contribute to run simulations for edge plasmas in WEST C4 campaign, and will help determining the divertor and main chamber heat load as well as other important information as the impurity content in the machine. This work will thus provide key insights into how to improve performance for future ITER operation.

This work is part of the interdisciplinary TOP project recently granted by the Aix-Marseille University foundation AMIDEX in the frame of the Initiative d’Excellence of the French government. The position is fixed-term up to 12 months.

Essential skills:

Candidates should have a demonstrated knowledge in plasma physics or a related field in physics and/or experiences on numerical modelling and simulation code will be appreciated.

Contact person:

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Aix-Marseille University (AMU)



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