Aix-Marseille University’s 3-year PhD contract
Nuclear fusion, Modelling and simulation
50% M2P2 Lab (38 rue Joliot-Curie, Centrale Marseille Plot 6 13451 Marseille), 50% CEA Lab (Cadarache, 13115 Saint-Paul-lez-Durance).
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. In tokamak, the plasma boundary layer acts as a critical interface between the hot core and the solid wall of the reaction chamber. There, plasma ions impact solid surfaces of refractory materials (tungsten), resulting in physical sputtering of impurity atoms towards the plasma. These impurity particles are detrimental to confinement performances if they reach the central plasma volume. In that respect, the permeability of the boundary layer to these particles is of critical importance. This permeability results from the competition between antagonist processes: screening effects repealing particles toward the source target, collisional forces attracting them away, and turbulent fluctuations transporting them across plasma layers. Important topological effects are also on task regarding the position of the source in the boundary layer.
A three-year doctoral position is opened at Aix-Marseille University between two laboratories, the M2P2, a laboratory of numerical modelling and the Institute for Magnetic Fusion Research at CEA Cadarache, to study the dynamics of impuritiees at the plasma edge. The candidate will work on the suite of codes SOLEDGE2D-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. The dynamics of heavy impurities, more specifically of Tungsten, will be provided by ERO2.0, the Monte-Carlo code developed at Jülich and already coupled to SOLEDGE2D-EIRENE. Experimental data base will be used to elaborate a more comprehensive model of impurity production and transport with the goal to allow a more accurate description of the particle sources in the boundary plasma layer and ultimately up to the plasma core. Spectro-measurements from WEST, operated by CEA at Cadarache (http://west.cea.fr/en/index.php), providing information on Tungsten dynamics will be used as a reference data base to develop and exploit a predictive model of heavy impurities transport.
Master’s degree in Physics, mechanical engineering, applied mathematics. Candidates should have a demonstrated knowledge in numerical modelling and simulation code and plasma physics or a related field in physics and/or experiences will be appreciated.
November 01st 2021
- Grades from last completed degree
- Cover letter & Curriculum Vitae
- Letter of recommendation if applicable
- The internship report at the end of the study possibly
More information at:Continue reading
|Title||PhD position - Study of the dynamics and passive control of heavy ions produced by plasma-wall interaction: toward the elaboration of a predictive model in the suite of codes SOLedge2D-EIRENE from experiments on the tokamak WEST|
|Job location||Jardin du Pharo 58, bd Charles Livon, 13284 Marseille|
|Published||September 18, 2020|
|Application deadline||November 1, 2020|
|Job types||PhD  |
|Fields||Engineering Physics,   Particle Physics,   Plasma Physics,   Mechanical Engineering,   Mechanics,   Applied Physics  |