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17 augustus 2017

This PhD project involves the modelling of so-called plasma detachment in tokamak divertors and in linear devices like MAGNUM-PSI used to simulate tokamak divertor conditions. The detached plasma state is characterized by a strong reduction of heat and particle loads to the divertor targets as a consequence of radiation losses and plasma-neutral friction. The modelling will be performed with the code suites SOLPS-ITER and B2.5-EUNOMIA. The latter is specifically designed to model both high-density linear plasma devices and tokamak divertors. The results of the modelling will be compared with the experimental results from tokamaks as well as from Magnum-PSI.
Scientific aim: this project aims to contribute to our understanding of the processes determining the detached plasma state in different divertor geometries. The position is part of the strategic programme 'Taming the Flame', which aims to enhance our understanding of the physics of power exhaust of tokamak fusion reactors, and to develop advanced control strategies for high-performance, low wall load operation. Significant interaction with other PhD students and postdocs within this programme is expected.

Job description
Responsibilities and tasks
- To develop insight into the processes determining plasma detachment and to gain expertise in the use of the SOLPS-ITER and B2.5-EUNOMIA code suites.
- To model the hydrogenic species and determine the relevant processes determining their evolution in the MAGNUM-PSI plasma beam.
- To introduce the same species and processes in tokamak SOL modelling and to determine the electric fields and currents in the tokamak SOL.
- To determine the modelling predictions for plasma detachment and compare these with measurements from MAGNUM-PSI and tokamaks over a range of different divertor geometries.

We seek enthusiastic and highly talented candidates that are willing to work in an international and interdisciplinary team of theoretical and experimental physicists. The applicant should have a Master degree (or an equivalent diploma giving access to doctoral studies) in physics or computational sciences. Experience in numerical modelling is highly beneficial. Good verbal and written communication skills (in English) are mandatory.

DIFFER (Dutch Institute for Fundamental Energy Research) is one of the NWO institutes and focuses on a multidisciplinarily approach of the energy research combining physics, chemistry, engineering and materials science. The institute is based on two main strands, solar fuels for the conversion and storage of renewable energy and fusion-energy as clean and unlimited source of energy. DIFFER is developing and supporting a national network on fundamental energy research and is closely collaborating with academic institutions, research institutes and industry.

Conditions of employment
When fulfilling a PhD position at NWO, you will get the status of junior scientist. You will have an employee status and can participate in all the employee benefits NWO offers. You will get a contract for four years. Your salary will be up to a maximum of 2,834 euro gross per month. The salary is supplemented with a holiday allowance of 8 percent and an end-of-year bonus of 8.33 percent. You are supposed to have a thesis finished at the end of your four year term with NWO. A training program is part of the agreement. You and your supervisor will make up a plan for the additional education and supervising that you specifically need. The conditions of employment of NWO are laid down in the Collective Labour Agreement for Research Centres, more exclusive information is available at this website under Personnel.

Contact information
Further information on the vacancy is available through the leader of the fusion energy department, Prof.dr. M.R. de Baar +31 40 333 49 52.
General information on working at NWO-I can also be found at the NWO website. The 'NWO job interview code' applies to this position.

In case you are interested you can apply by submitting an application letter and a grade list (including full resume). Please refer to vacancy 17-009. The letter of application may be sent electronically to vacancies@differ.nl