Department of Applied Physics

Fusion and Plasma Physics

The Fusion and Plasma Physics group at Aalto University investigates experimentally and by computer simulations plasma phenomena in magnetically confined fusion plasma physics. The overall goal is to create a new, clean and virtually unlimited energy source.
Flux surface diagnostics: field line visualization in Wendelstein 7-X stellarator. Photo: Matthias Otte / IPP
Flux surface diagnostics: field line visualization in Wendelstein 7-X stellarator. Photo: Matthias Otte / IPP

The fusion process encompasses light elements, such as hydrogen and its isotopes deuterium and tritium, to merge to heavier elements, such as helium, thereby releasing large amounts of energy in form of MeV neutrons and protons. To harness this energy, a plasma needs to confined either magnetically or inertially, and heated to temperatures in excess of 100 million Kelvins. At these temperatures the fusion process becomes self-sustained by heating of the plasma via energetic by-products, such as helium. The fusion challenge consists in confining the plasma sufficiently long and controlling its interaction with the surrounding walls.

The group’s research activities concentrate on the tokamak concept. We participate in experiments at present fusion facilities, such as ASDEX Upgrade, DIII-D, and JET, develop and validate computational models for present and future, burning-plasma reactors, such as ITER, and develop diagnostics for fusion relevant experiments.

The group is part of FinnFusion, the domestic agency administrating fusion research within EUROfusion, and member of FuseNet, the European Fusion Education Network facilitating student exchange at Bachelor's, Master's and PhD level. The group is supported by the Academy of Finland and other funding agencies.

Mathias Groth

Group leader

Mathias Groth


The main research interests are listed below, including codes, experimental apparatuses and facilities, and major scientific results.

Codes used and developed by the Fusion and Plasma Physics group 

Experimental plasma-wall interaction research

Collaboration with experimental research institutes

Open positions

Unfortunately, we currently do not have open positions.

Latest publications

Characterisation of divertor detachment onset in JET-ILW hydrogen, deuterium, tritium and deuterium–tritium low-confinement mode plasmas

M. Groth, V. Solokha, S. Aleiferis, S. Brezinsek, M. Brix, I. S. Carvalho, P. Carvalho, G. Corrigan, D. Harting, N. Horsten, I. Jepu, J. Karhunen, K. Kirov, B. Lomanowski, K. D. Lawson, C. Lowry, A. G. Meigs, S. Menmuir, E. Pawelec, T. Pereira, A. Shaw, S. Silburn, B. Thomas, S. Wiesen, P. Börner, D. Borodin, S. Jachmich, D. Reiter, G. Sergienko, Z. Stancar, B. Viola, P. Beaumont, J. Bernardo, I. Coffey, N. J. Conway, E. de la Luna, D. Douai, C. Giroud, J. Hillesheim, L. Horvath, A. Huber, P. Lomas, C. F. Maggi, M. Maslov, C. Perez von Thun, S. Scully, N. Vianello, M. Wischmeier 2023 Nuclear Materials and Energy

Validation of EDGDE2D-EIRENE predicted 2D distributions of electron temperature and density against divertor Thomson scattering measurements in the low-field side divertor leg in DIII-D

M. Groth, A. G. McLean, W. H. Meyer, A. W. Leonard, S. L. Allen, G. Corrigan, M. E. Fenstermacher, D. Harting, C. J. Lasnier, F. Scotti, H. Q. Wang, J. G. Watkins 2023 Nuclear Materials and Energy

UEDGE-CRUMPET predicted isotopologue effect on atomic and molecular emission in DIII-D high-recycling divertor plasmas

Andreas Holm, Mathias Groth, Adam McLean, Filippo Scotti, Thomas D. Rognlien, William H. Meyer, Morgan W. Shafer, Robert S. Wilcox, Eric M. Hollmann 2023 Nuclear Materials and Energy

Pedestal particle balance studies in JET-ILW H-mode plasmas

L. Horvath, B. Lomanowski, J. Karhunen, M. Maslov, P. A. Schneider, J. Simpson, M. Brix, B. Chapman-Oplopoiou, G. Corrigan, L. Frassinetti, M. Groth, K. Lawson, C. F. Maggi, S. Menmuir, R. B. Morales, D. Moulton, O. Myatra, D. Nina, T. Pereira, D. I. Réfy, S. Saarelma, M. Vécsei 2023 Plasma Physics and Controlled Fusion

Spectroscopic camera analysis of the roles of molecularly assisted reaction chains during detachment in JET L-mode plasmas

J. Karhunen, A. Holm, S. Aleiferis, P. Carvalho, M. Groth, K.D. Lawson, B. Lomanowski, A.G. Meigs, A. Shaw, V. Solokha 2023 Nuclear Materials and Energy

Predictive simulations of NBI ion power load to the ICRH antenna in Wendelstein 7-X

J. Kontula, S. Äkäslompolo, A. Ikäheimo, S. Lazerson, T. Kurki-Suonio, D. Hartmann, N. Rust, P. McNeely, Ye O. Kazakov, J. Ongena 2023 Plasma Physics and Controlled Fusion

Parameter dependencies of the separatrix density in low triangularity L-mode and H-mode JET-ILW plasmas

B. Lomanowski, G. Rubino, A. Uccello, M. Dunne, N. Vianello, S. Aleiferis, J. Canik, I. Carvalho, G. Corrigan, L. Frassinetti, D. Frigione, L. Garzotti, M. Groth, A. Meigs, M. Maslov, C. Perez von Thun, F. Rimini, P. A. Schneider, G. Sergienko, J. Simpson, D. Van Eester 2023 Nuclear Fusion

Variation in the volumetric power and momentum losses in the JET-ILW scrape-off layer

B. Lomanowski, J. S. Park, L. Aho-Mantila, M. Brix, M. Groth, C. Guillemaut, C. Lowry, S. Marsen, A. Meigs, M. Wischmeier 2023 Nuclear Materials and Energy

Analysis of high frequency Alfvén eigenmodes observed in ASDEX Upgrade plasmas in the presence of RF-accelerated NBI ions

R. Ochoukov, S. Sipilä, R. Bilato, V. Bobkov, M. Dreval, M. Weiland, R. Dendy, H. Faugel, T. Johnson, A. Kappatou, Y. Kazakov, K. G. McClements, D. Moseev, M. Salewski, P. Schneider 2023 Nuclear Fusion
More information on our research in the Research database.
Research database
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