ELFT HÍRADÓ

[Sandor Zoletnik <zoletnik AT rmki.kfki.hu>]

Szeretnem tovabbitani az alabbi Ph.D hallgatoi allas kiirst.

Zoletnik Sandor

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 Dr. Sandor Zoletnik
 Head of Research Unit
 Association EURATOM/HAS
 KFKI Research Institute for Particle and Nuclear Physics
 Letters: P.O.B. 49, H-1525, Budapest, Hungary
 Fax: (36 1) 3922598
 Phone: (36 1) 3922753
 WWW: www.magfuzio.hu
 E-mail: 
zoletnik AT rmki.kfki.hu
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PlasmaNet 9-012  PhD Position at FOM Institute for Plasma Physics rijnhuizen
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The FOM Institute for Plasma Physics Rijnhuizen is offering three PhD
positions Position 1: "Theory and Modelling of Edge Localized Modes in
Fusion Plasmas"
Research
To reach the conditions required for a burning fusion plasma in a tokamak, a
transport barrier must be created at the edge of the magnetically confined
plasma, the so-called H-mode. This leads to steep gradients that are prone
to a edge localized modes (ELMs), instabilities that periodically eject
particles and energy into the unconfined zone surrounding the hot plasma.
The precise nature of these instabilities and their interaction with the
H-mode gradients is far from understood. The aim of the PhD project is to
theoretically model the bifurcation in energy confinement in fusion plasmas,
and the ELMs causing the pulsed losses from the steep pressure gradient zone
in the H-mode. The models will be used to find ways to control the ELM
magnitudes while maintaining the H-mode. The method will be to determine the
nonlinear structure of the heat transport dynamics that includes the
positive feedback that sustains the H-mode and the periodic relaxations of
the ELMs.

Job description

The work will include analytic theory, numerical simulations, and comparison
with experimental results, which may require visiting some of Europe's major
tokamak experiments.

Position 2: "Numerical Modelling of Erosion and Redepostion in Fusion
Reactors"
Research
The exhaust of helium from a burning fusion reactor will be established by
means of a so-called divertor, a section where the boundary layer of the
plasma is diverted onto tiles, to cool the plasma down to the gas phase.
With the plasma species, also a significant part of the power generated in
the plasma reaches the tiles. This leads to plasma surface interaction under
extreme conditions: a plasma flux of 1024 ions m-2s-1 and an energy flux of
10 MWm-2. These conditions restrict the choice for materials for the tiles
to tungsten and carbon. Erosion of the tiles brings material into the plasma
where it will be ionized and transported back to the surface. The aim of the
PhD project is to model the erosion-redeposition cycle. The modelling will
concentrate on Magnum-psi, a device in which reactor relevant divertor
conditions can be created in a linear, well accessible geometry. Validation
of the models against dedicated experiments is an important aspect of the
research.

Job description
The work will mainly include numerical simulations. A software package, ERO,
describing erosion and deposition is available, but has to be adapted to
handle the specific geometry of experiments in Magnum-psi. A close
collaboration is foreseen with the Forschungszentrum Juelich, where the ERO
code is being used extensively. Validation of the simulations will be done
in close cooperation with experimentalists of the PSI-E group responsible
for the experiments on Magnum-psi. Comparison with experimental results may
also require visiting some of Europe's major tokamak experiments.

Position 3: "Material migration in Magnum-PSI"

Research
Although the general research field is similar to that of position 2, the
aim of this PhD project is to investigate the material migration, which is
determined by the erosion and re-deposition processes in Magnum-PSI. In
addition the material migration into gaps of castellated structures should
be determined. Those processes will be studied for carbon surfaces as well
as mixed material surfaces. The results will be compared to numerical
modeling results.

Job description
The work will be focused on experimental physics with emphasis on plasma
surface interaction as well as material science. The PhD student will first
gain experience on the linear plasma simulator Pilot-PSI, but will carry out
most of the research on Magnum-PSI. The processes occurring on the plasma
facing components will be investigated with optical emission spectroscopy as
well as post-mortem surface analysis techniques. The post-mortem analysis
will be done in-house as well as in collaborating laboratories (e.g.
Forschungszentrum Julich, IPP Garching).

Location
The work will be carried out at the FOM institute Rijnhuizen in Nieuwegein,
with occasional visits to some of Europe's major tokamak experiments.

Requirements
Applicants should have (or should expect to soon have) a Master degree in
Physics or Mathematics, or an equivalent diploma giving access to doctoral
studies, without having to acquire any further qualifications.

Conditions of employment
When fulfilling a PhD position at FOM, you will get the status of junior
scientist.
You will have a contract of employment for the duration of 4 years and can
participate in all the employee benefits FOM offers. The gross monthly
salary starts with EUR 1979,- in the first year of your employment and
increases to EUR 2610,- in the fourth year of your employment. The salary is
supplemented with a holiday allowance of 8% and an end-of year bonus of
8.33%. A high-quality 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 research has to result in a
thesis at the end of the four year term with FOM.

Information
The employment conditions are laid down in the Collective Labour Agreement
for Research Centres (CAO-Onderzoekinstellingen). Information on this
Agreement, as well as on working at FOM, is available at www.fom.nl under
Personeelsinformatie (in Dutch) or under Personnel (in English).
For further information on positions 1 and 2 please contact Prof. Dr. W.J.
Goedheer, or mail to 
w.j.goedheer AT rijnhuizen.nl.
 For information on position
3 please contact Dr. J. Rapp on +31 30 6096999, or mail to
rapp AT rijnhuizen.nl.

Applications
Please send your letter of application and resume before March 21st to drs.
Karijn Heling, FOM-Institute for Plasma Physics, P.O. Box 1207, 3430 BE
Nieuwegein, The Netherlands or by e-mail to: 
PenO AT rijnhuizen.nl.
Please note vac. nr. 09-001 in your application letter.

Dr. A.J.H. Donne
Deputy Head Fusion Research
Executive Board ITER-NL
Tel:  +31 (0)30 60 96 960
Fax: +31 (0)30 60 31 204
GSM +31 (0)65 37 98 329

FOM Institute for Plasma Physics Rijnhuizen Edisonbaan 14, 3439 MN
Nieuwegein PO Box 1207, 3430 BE Nieuwegein The Netherlands
mail: 
donne AT rijnhuizen.nl
http: www.rijnhuizen.nl

The Foundation for Fundamental Research on Matter (FOM) promotes,
co-ordinates and finances fundamental and applied physics research in the
Netherlands. It is an autonomous foundation responsible to the physics
division of the national research council NWO. FOM employs about 950 people,
of whom about 325 are PhD students and 100 are post-docs, who work at FOM
research institutes and in university laboratories. Additional funding is
obtained via the Technology Foundation (STW), the European Union, and
industry.
The FOM-Institute for Plasma Physics Rijnhuizen is the Dutch national home
base for research on the physics of nuclear fusion. This research is carried
out as part of the European fusion research programme, with a strong focus
on the international fusion reactor ITER.