Fusion reactor development. Particular project: Plasma-wall interactions in fusion devices

Coordinating university or institute

KTH Royal Institute of Technology in Stockholm,



Project description

Design and construction of a next step controlled fusion device (ITER) is preceded by development, selection and characterization of materials relevant for plasma-facing components– especially for the first wall and the divertor. Tungsten and beryllium were selected for ITER; results obtained also by the KTH group influenced that choice.

Material erosion, transport and re-deposition leading to the fuel accumulation in wall materials top the list of urgent priority issues to be assessed in present-day devices to provide the best possible predictions for a reactor. Experimental work is carried out at Joint European Torus (JET), ASDEX Upgrade, and WEST, and also in linear simulators of plasma-surface interactions. Materials are examined using a large number of material research techniques.




KTH Royal Institute of Technology, School of Electrical Engineering and Computer Science, Department of Fusion Plasma Physics

  • Marek Rubel, Team leader, professor
  • Per Brunsell, professor
  • Per Petersson, researcher
  • Henric Bergsåker, associate professor
  • Laura Dittrich, student

Uppsala University, Department of Physics

  • Daniel Primetzhofer, professor

Core deliverables

  • Testing of beryllium and tungsten behaviour under plasma operation
  • Determination of the impact of material migration and mixing on the wall composition and retention of hydrogen isotopes
  • Mechanism of dust generation and detailed characterisation of particles
  • Mechanism and efficiency of fuel removal and wall conditions under ion cyclotron-assisted plasma operation
  • Development of diagnostic tools and the determination of the plasma impact on diagnostic components

Total budget

EUR 2.2 million (estimate)


  • KTH Royal Institute of Technology
  • Uppsala University
  • EURO-fusion Consotrium
  • Culham Centre for Fusion Energy, Joint European Torus (JET), UK
  • Forschungszentrum Juelich, Germany
  • Warsaw University of Technology, Poland


210525 Vwide Angle View

Procurement codes

Particle and photon detectors

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