Evolution of the millimeter-wave collective Thomson scattering system of the high-field tokamak Frascati Tokamak Upgrade

Journal Article · Sun Apr 15 00:00:00 EDT 2007 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2719197· OSTI ID:20953419

Tartari, U; Grosso, G; Granucci, G; Gandini, F; Garavaglia, S; Grossetti, G; Simonetto, A; Mellera, V; Muzzini, V; Lubyako, L; Shalashov, A; Orsitto, F P; Ciccone, G; Volpe, F ^[1]

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1. Istituto di Fisica del Plasma, CNR-ENEA-Euratom Association, Via R. Cozzi 53, 20125 Milan (Italy)

We first describe the improved receiving system of the diagnostic experiment of millimeter-wave collective Thomson scattering being run on the Frascati Tokamak Upgrade (FTU), and then discuss some peculiar problems and new operating procedures related to the investigation of strong anomalous spectra of nonthermal origin, many-orders-of-magnitude stronger than the ion thermal feature merged in them, systematically observed in the experimentation, and finally ascribed to a perturbation of the gyrotron that generates the probing beam. Arguments in favor of a more general valence of the solutions actuated for the specific case of FTU are finally given.

• OSTI ID: 20953419
• Journal Information: Review of Scientific Instruments, Vol. 78, Issue 4; Other Information: DOI: 10.1063/1.2719197; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAMS
DISTURBANCES
FT TOKAMAK
IONS
PLASMA
PLASMA CONFINEMENT
SPECTROSCOPY
THOMSON SCATTERING