Studies of the plasma vertical instability and its stabilized concepts in JA and EU broader approach, DEMO design activity

Hiroyasu Utoh, Shinsuke Tokunaga, Nobuyuki Asakura, Yoshiteru Sakamoto, Yoji Someya, Ryoji Hiwatari, Kenji Tobita, Gianfranco Federici, Ronald Wenninger, Francesco Maviglia, Raffaele Albanese, Roberto Ambrosino, Massimiliano Mattei, Fabio Villone

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Vertical instability of an elongated plasma and its stabilized concepts by in-vessel components and vacuum vessel (VV) design have been studied intensely in JA and EU Broader Approach, DEMO Design Activity. The vertical stabilization of the plasma represents one of the key issues for EU and JA DEMO, due to the large distance of the active control coils for the presence of thick breeding blanket system. A feasible DEMO reactor that maintains plasma vertical stability was proposed from an engineering viewpoint. The vertical stability performances are acceptable, without considering a passive stabilizer, if a maximum elongation of κ95 = 1.6 is chosen. For the higher-elongated plasmas (κ95 > 1.70), additional inboard passive stabilizer is effective.

Original languageEnglish
Pages (from-to)874-877
Number of pages4
JournalFusion Engineering and Design
Volume136
DOIs
Publication statusPublished - 2018 Nov
Externally publishedYes

Keywords

  • Broader approach DEMO design activity (BA DDA)
  • Conducting shell
  • DEMO design
  • In-vessel component
  • Plasma vertical stability

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

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