First results from the NORTH tokamak

S. K. Nielsen, M. P. Gryaznevich, A. S. Jacobsen, T. Jensen, M. Jessen, S. B. Korsholm, J. Rasmussen, M. Salewski, M. G. Senstius, V. Naulin, R. D. Nem, M. L.H. Korsgaard, A. C. Nilsson, F. Dam, A. Goltermann, A. C. Pedersen, M. T. Sutherland, Timo Aalto, Ari Hokkanen, Antti SalmiTuomas Tala

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)


NORTH is a small-sized tokamak located at the Technical University of Denmark. It can be operated both as a spherical tokamak and a simple magnetized torus (SMT). Here we show first experimental results. We discuss the setup of the device, including the layout of the vacuum vessel, the magnetic field coils, the power supply systems, the heating sources, diagnostics, and the control system. We present measurements in discharges that have been heated by electron cyclotron resonance heating at the fundamental resonance. The waves have been injected both from the low-field side and the high-field side, and rich fluctuation spectra in Langmuir probe and Rogowski coil signals are presented during the different plasma phases. Finally, we discuss research plans and further installations to be made on NORTH.
Original languageEnglish
Article number112288
JournalFusion Engineering and Design
Publication statusPublished - May 2021
MoE publication typeA1 Journal article-refereed


The authors would like to thank Tokamak Energy for providing essential equipment. This work was supported by a research grant ( 15483 ) from VILLUM FONDEN . This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014–2018 and 2019–2020 under grant agreement no. 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission.


  • Electron Bernstein wave heating
  • Electron cyclotron resonance heating
  • Plasma diagnostics
  • Tokamak operation


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