KTH

Intelligence Summary: KTH Royal Institute of Technology

Node Identity: KTH Royal Institute of Technology is Sweden's primary plasma physics research university, housing the Department of Electromagnetics and Plasma Physics within the School of Electrical Engineering and Computer Science. KTH operates the EXTRAP T2R reversed-field pinch (RFP) device at the Alfvén Laboratory and conducts research across fusion confinement physics, plasma control, RF heating, plasma-wall interaction, and space/laboratory plasma physics. The Fusion Plasma Physics group has a long tradition of basic plasma physics initiated by Professor Bo Lehnert.

Strategic Relevance: KTH represents a substantive plasma physics center with a unique experimental asset (EXTRAP T2R RFP). The RFP configuration provides a flexible test bed for resistive wall mode (RWM) control — directly transferable to advanced tokamak scenarios for ITER/DEMO. KTH's dual fusion and space plasma capability, including hardware contributions to space missions (spacecraft and rockets), indicates broad plasma competence spanning laboratory to astrophysical scales. The Radio Frequency Heating and Current Drive group develops the FEMIC wave solver (built on COMSOL Multiphysics/MATLAB) applied to JET and ITER — representing advanced electromagnetic wave-plasma interaction modeling capabilities. No evidence of weapons-oriented plasma research at KTH has been found; the work is civilian and EUROfusion-aligned.

Technical Focus / Capabilities: KTH's plasma physics research encompasses: (1) Fusion confinement physics including plasma control, computational methods, and plasma heating; (2) RWM stability and active feedback control using EXTRAP T2R's digital control system with active magnetic field coil arrays (led by Professor Per Brunsell); (3) RF heating and current drive theory and modeling using the FEMIC finite element wave solver (led by Associate Professor Thomas Johnson); (4) Space and plasma physics including ionospheres, magnetospheres, solar wind, and planetary plasma environments; (5) Plasma-wall interaction in fusion devices, magnetron sputtering, and applied plasma physics. KTH contributes hardware to space missions and conducts plasma waste treatment and surface treatment research via EXTRAP T2R access ports.

Network Linkage: KTH maintains 2 documented connections: it operates EXTRAP T2R and is funded by EUROfusion Sweden. KTH collaborates with Consorzio RFX (Padua, Italy) on RFP physics and with Chalmers theory group on RWM stability modeling. KTH is part of the Swedish Research Unit (SRU) for fusion energy alongside Uppsala University, Lund University, and RISE, coordinated through VR (Swedish Research Council) and the Swedish Energy Agency. The FEMIC code is applied to JET and ITER scenarios, connecting KTH to the broader European fusion program.