Performance Analysis of the NbTi PF Coils for the EU DEMO Fusion Reactor

Andrea Zappatore, Roberto Bonifetto, Pierluigi Bruzzone, Valentina Corato, Aldo Di Zenobio, Laura Savoldi, Kamil Sedlak, Simonetta Turtu, Roberto Zanino

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3 Citations (Scopus)


The first design of the NbTi poloidal field (PF) coils for the EU DEMO fusion reactor has been proposed by the Swiss Plasma Center and by the Italian National Agency for New Technologies, Energy and Sustainable Economic Development. The thermal-hydraulic (TH) performance analysis of the PF coil system presented in this work has been carried out using the state-of-The-Art 4C code. The minimum temperature margin and the TH response of the coils to the heat deposition due to AC losses are computed in two different plasma scenarios, using a single time constant ( nτ) whose value is currently unknown. Therefore, we apply our model to parametrically assess the sensitivity of the PF performance to a range of nτ values. The calculations are also performed taking into account that the high void fraction design of the conductor leads to the opening of a channel due to the Lorentz force. For all situations considered here, the 4C code predicts that the temperature margin never goes below the acceptable minimum of 1.5 K.
Original languageEnglish
Article number8258856
Pages (from-to)-
JournalIEEE Transactions on Applied Superconductivity
Issue number4
Publication statusPublished - 1 Jun 2018
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Zappatore, A., Bonifetto, R., Bruzzone, P., Corato, V., Zenobio, A. D., Savoldi, L., Sedlak, K., Turtu, S., & Zanino, R. (2018). Performance Analysis of the NbTi PF Coils for the EU DEMO Fusion Reactor. IEEE Transactions on Applied Superconductivity, 28(4), -. [8258856].