Modification of the FTU tokamak machine for operation with D-shaped plasmas

Maurizio Gasparotto, Emilia Barbato, Flavio Crisanti, Antonio Cucchiaro, Marco Ferrari, Giorgio Maddaluno, Giuseppe Mazzone, Stamos Papastergiou, Massimo Roccella, Luigi Semeraro

Research output: Contribution to conferencePaper


The FTU machine was designed to operate with circular plasma. A modification of the FTU (FTU-D) load assembly has been studied in order to allow operation with strongly shaped plasmas (R = 1 m, a = 0.19-0.22 m, elongation k = 1.6, triangularity δ = 0.8). The scientific aim of this proposal is the investigation of the so called advanced tokamak operation characterised by the simultaneous achievement of high-δ and high bootstrap current fraction in regimes with high energy confinement achieved by current profile control. Changing the plasma shape from circular to a D configuration with either a limiter or X-point (single or double null) requires the protection of the upper and lower part of the vacuum vessel (VV) by the toroidal limiters. In order to produce the required shaping a new design of the transformer system (mechanical structure and central solenoid) was also developed. In the paper, the upper and lower toroidal limiters, the new central solenoid and the related mechanical structure will be described; the thermal, electromagnetic and mechanical analysis during plasma operation and disruptions will be reported and, finally, the installation and alignment procedure of the new limiters by remote handling equipment will be given.
Original languageEnglish
Publication statusPublished - 1999
Externally publishedYes
Event18th IEEE/NPSS Symposium on Fusion Engineering (SOFE99) - , Unknown
Duration: 1 Jan 1999 → …


Conference18th IEEE/NPSS Symposium on Fusion Engineering (SOFE99)
Period1/1/99 → …


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

Cite this

Gasparotto, M., Barbato, E., Crisanti, F., Cucchiaro, A., Ferrari, M., Maddaluno, G., ... Semeraro, L. (1999). Modification of the FTU tokamak machine for operation with D-shaped plasmas. Paper presented at 18th IEEE/NPSS Symposium on Fusion Engineering (SOFE99), Unknown.