Real-time determination of confinement parameters in JET

Oliviero Barana, E. Joffrin, A. Murari, F. Sartori

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The main confinement parameters, like the internal inductance liand the diamagnetic poloidal beta βDIA, are of particular relevance for a reliable real-time control system of next step tokamaks. These quantities have been obtained at Joint European Torus (JET), with a precision more than satisfactory for real-time applications, through a method, known as BETALI, that uses the Shafranov integrals S1, S2and S3. Since S1, S2and S3are defined on the plasma boundary, a technique, that exploits the real-time boundary code XLOC, has been expressively developed to determine the last closed flux surface (LCFS). BETALI has been verified on several experimental plasma configurations, giving very encouraging results both in the limiter and x-point phase of the discharges. The compatibility with the time restrictions has also been tested successfully. This application has, therefore, been implemented and it has already been used during last JET campaigns. © 2003 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)697 - 701
Number of pages5
JournalFusion Engineering and Design
Publication statusPublished - Sep 2003
Externally publishedYes


All Science Journal Classification (ASJC) codes

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

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