A FOURIER-TRANSFORM SPECTROMETER WITH FAST SCANNING CAPABILITY FOR TOKAMAK PLASMA DIAGNOSTIC

Authors
BURATTI P ZERBINI M
Citation
P. Buratti et M. Zerbini, A FOURIER-TRANSFORM SPECTROMETER WITH FAST SCANNING CAPABILITY FOR TOKAMAK PLASMA DIAGNOSTIC, Review of scientific instruments, 66(8), 1995, pp. 4208-4217
Citations number
22
Categorie Soggetti
Physics, Applied","Instument & Instrumentation
Journal title
Review of scientific instruments → ACNP
ISSN journal
00346748
Volume
66
Issue
8
Year of publication
1995
Pages
4208 - 4217
Database
ISI
SICI code
0034-6748(1995)66:8<4208:AFSWFS>2.0.ZU;2-A
Abstract
Electron cyclotron emission spectra are routinely measured in the FTU tokamak by means of a fast scanning Fourier transform spectrometer. Th e key element of this instrument is a two-beam interferometer in which the path difference is varied linearly in time by rotation of a helic oidal reflector. The shortest scan time obtained for a path difference excursion of 4 cm was 1.2 ms. The spectrometer has been absolutely ca librated and the measured temperature profiles are in good agreement w ith those derived from other diagnostics. (C) 1995 American Institute of Physics.