Chapter 8: The diagnostic systems in the FTU

O. Tudisco, G.M. Apruzzese, P. Buratti, L. Cantarini, A. Canton, L. Carraro, V. Cocilovo, R. De Angelis, M. De Benedetti, B. Esposito, L. Gabellieri, E. Giovannozzi, G. Granucci, L.A. Grosso, G. Grosso, P. Innocente, H. Kroegler, M. Leigheb, G. Monari, D. PacellaL. Panaccione, V. Pericoli-Ridolfini, G. Pizzicaroli, S. Podda, M.E. Puiatti, G. Rocchi, A. Sibio, A. Simonetto, P. Smeulders, U. Tartari, N. Tartoni, B. Tilia, M. Valisa, V. Zanza, M. Zerbini

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The design of diagnostics for the Frascati Tokamak Upgrade (FTU) is challenging because of the compactness of the machine (8-cm-wide ports) and the low operating temperatures requiring the presence of a cryostat. Nevertheless, a rather complete diagnostic system has been progressively installed. The basic systems include a set of magnetic probes, various visible and ultraviolet spectrometers, electron cyclotron emission (ECE) for electron temperature profiles measurements and electron tails monitoring, far-infrared and CO2interferometry, X-ray (soft and hard) measurements, a multichord neutron diagnostics (with different type detectors), and a Thomson scattering system. Some diagnostics specific to the FTU physics program have been used such as microwave reflectometryfor turbulence studies, edge-scanning Langmuir probes for radio-frequency coupling assessment, oblique ECE, and a fast electron bremsstrahlung (FEB) camera for lower hybrid current drive-induced fast electron tails. These systems are briefly reviewed in this paper. Further developments including a scanning CO2laser two-color interferometer, two FEB cameras for tomographic analysis, a motional Stark effect system, and a collective Thomson scattering system are also described.
Original languageEnglish
Pages (from-to)402 - 421
Number of pages20
JournalFusion Science and Technology
Issue number3
Publication statusPublished - 2004
Externally publishedYes


All Science Journal Classification (ASJC) codes

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

Cite this

Tudisco, O., Apruzzese, G. M., Buratti, P., Cantarini, L., Canton, A., Carraro, L., ... Zerbini, M. (2004). Chapter 8: The diagnostic systems in the FTU. Fusion Science and Technology, 45(3), 402 - 421.