Final design of the quench protection circuits for the JT-60SA superconducting magnets

Elena Gaio, Alberto Maistrello, Alberto Coffetti, Teresa Gargano, Mauro Perna, Luca Novello, Alberto Coletti, Makoto Matsukawa, Kunihito Yamauchi

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Abstract

This paper describes the detailed design of the quench protection circuits (QPCs) for the superconducting toroidal field (TF) and poloidal field (PF) magnets of the satellite tokamak JT-60SA, which will be installed in Naka, Japan. The nominal currents to be interrupted and the maximum reapplied voltages are 25.7 kA and 2.8 kV for the TF QPCs and 20 kA and 5 kV for the PF QPCs. The innovative solution proposed in the QPC design is based on a hybrid circuit breaker (CB) composed of a mechanical bypass switch for conducting the continuous current, in parallel to a static CB for current interruption. The main choices of the final design are presented and discussed, either to confirm or to update and complete the study performed at the conceptual design level. © 2012 IEEE.
Original languageEnglish
Article number6075265
Pages (from-to)557 - 563
Number of pages7
JournalIEEE Transactions on Plasma Science
Volume40
Issue number3 PART 1
DOIs
Publication statusPublished - Mar 2012
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Gaio, E., Maistrello, A., Coffetti, A., Gargano, T., Perna, M., Novello, L., Coletti, A., Matsukawa, M., & Yamauchi, K. (2012). Final design of the quench protection circuits for the JT-60SA superconducting magnets. IEEE Transactions on Plasma Science, 40(3 PART 1), 557 - 563. [6075265]. https://doi.org/10.1109/TPS.2011.2171008