Duration: 1 year (renewable)
Period: to be started during 2019
Location: PIIM laboratory, CNRS-Aix-Marseille University, France
Gross salary: from 2162 € to 2361 €/month depending on qualification and experience
Research project and job description
Title: Numerical modelling and investigation of neutral dynamics in edge plasmas of tokamak for fusion. Application to ITER.
Heat exhaust is one of the challenges on the road to harness fusion power through magnetic confinement. It is a critical issue to be addressed in future ITER experiments. The key to overcome this challenge is to convert a large enough fraction of the plasma internal energy into radiation, thus spreading the energy over a large surface area of the material wall. Injecting well-chosen impurities so as to increase radiation losses in peripheral regions of the plasma is a very efficient way to spread the energy. The difficulty to get global experimental measurements in tokamak requires complementary numerical simulations in the design of optimized plasma scenarios during the future operation of ITER.
A one-year postdoctoral position (renewable) is opened at the PIIM laboratory in Marseilles, in close connection with the research group on fusion modelling at CEA Cadarache to develop the numerical modelling of this problem. This job will be based on the Soledge2D-EIRENE code (Bufferand et al. 2013), which is a state-of-the art numerical platforms developed by project partners to simulate transport in the edge of tokamaks. This work will be also carried out in close connection with experiments on WEST (http://west.cea.fr/en/index.php), which is operated by CEA at Cadarache, 80kms north from the location of PIIM laboratory. The multi-fluid model implemented in Soledge2D has recently been upgraded, with a fully revised implementation of the Zhdanov collisional closure. The work will entail several related code improvements, concerning convergence acceleration (devising a proper starter model from a pure D case), convergence assessment (particle and energy balances) and improvements of the implementation of atomic physics processes for impurities. In addition, a new synthetic diagnostic tool providing spectrum resolution for the radiated power will be developed and integrated into the code package. The post-doc will also contribute to run simulations of the radiation patterns in WEST C3/C4 campaign, and help determining 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.
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: firstname.lastname@example.orgApprenez-en davantage
|Intitulé||Post-doctoral position offer in numerical modelling of impurities dynamics for magnetic confinement edge plasma simulation|
|Job location||Jardin du Pharo 58, bd Charles Livon, 13284 Marseille|
|Publié||avril 2, 2019|
|Date limite d'inscription||Non Spécifiée|
|Types d'emploi||Post doc  |
|Domaines de recherche :||Physique atomique, moléculaire et optique,   Physique des matériaux,   Physique des particules,   Physique des plasmas  |