http://www.cnr.it/ontology/cnr/individuo/prodotto/ID231709
Real-time density computer for two-color interferometers (Articolo in rivista)
- Type
- Label
- Real-time density computer for two-color interferometers (Articolo in rivista) (literal)
- Anno
- 1990-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1063/1.1141812 (literal)
- Alternative label
P. Innocente, S. Martini, G. Corradi, G. Fadin, C. Fasoli, G. Garonzi (1990)
Real-time density computer for two-color interferometers
in Review of scientific instruments
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- P. Innocente, S. Martini, G. Corradi, G. Fadin, C. Fasoli, G. Garonzi (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://rsi.aip.org/resource/1/rsinak/v61/i10/p2876 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1 Istituto Gas Ionizzati, Ass. Euratom-ENEA-CNR, 35020 Padova, Italy;
2 I. Pro. M., Via Tombetta 95, 37135 Verona, Italy.
(P. Innocente 1, S. Martini 1, G. Corradi 2, G. Fadin 2, C. Fasoli 2, G. Garonzi 2) (literal)
- Titolo
- Real-time density computer for two-color interferometers (literal)
- Abstract
- An electronic circuit has been developed which performs real-time density computation on the quadrature phase signals of the two-color CO2 interferometer for the RFX experiment. Cartesian to polar coordinate conversion is obtained by a look-up table, and a ''phase fine tuning'' table allows us to introduce corrections to the systematic phase nonlinearity errors of the interferometer, by which the overall accuracy of the diagnostic is made better than 1°, equivalent to a line density of 6×10^17 m^-2 for a CO_2 system. The phase total range is ±512 fringes and the maximum allowed rate of change is 125×10^3 m^-2 s^-1 equivalent to a density rate of change of 2×10^25 m^-2 s^-1. A real-time signal proportional to the plasma density to be used for density feedback is provided by a 50 kHz, 12 bit converter. The system is a triple width CAMAC module and the two-color wavelength ratio is remotely programmable as a 20 bit constant, hence it is suitable in general for any two-color interferometer. The density data are also stored with a sampling rate of 10-250 kHz in a 128 K×24 bit memory buffer, which is interfaced via a CAMAC bus to the data acquisition system. (literal)
- Prodotto di
- Autore CNR
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