Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Advances of the density profile reflectometry on TORE SUPRA
View through CrossRef
Significant improvements have been achieved in the performances of the broadband reflectometry for the density profile measurements on Tore Supra. The frequency range of the former 50–75 GHz X-mode reflectometer has been extended with an additional device operating between 75 and 110 GHz. Both setups have ultrafast sweeping capabilities allowing full band measurements in 20 μs. The heterodyne detection and the intermediate frequency system have been upgraded to record beat frequencies up to 100 MHz with a signal to noise ratio of about 40 dB. The in phase and quadrature-type phase detection system (IQ detector) provides sine and cosine components of the received signal for a separate measurement of the phase and the amplitude. A new fast data acquisition system in Versa Module Europa format has been developed. It allows sampling frequency up to 200 MHz with 32 Mo memory capabilities per channel and 10 bit resolution digitizers. Edge profile measurements are now available for a wide range of toroidal magnetic fields (from 3 to 4 T).
Title: Advances of the density profile reflectometry on TORE SUPRA
Description:
Significant improvements have been achieved in the performances of the broadband reflectometry for the density profile measurements on Tore Supra.
The frequency range of the former 50–75 GHz X-mode reflectometer has been extended with an additional device operating between 75 and 110 GHz.
Both setups have ultrafast sweeping capabilities allowing full band measurements in 20 μs.
The heterodyne detection and the intermediate frequency system have been upgraded to record beat frequencies up to 100 MHz with a signal to noise ratio of about 40 dB.
The in phase and quadrature-type phase detection system (IQ detector) provides sine and cosine components of the received signal for a separate measurement of the phase and the amplitude.
A new fast data acquisition system in Versa Module Europa format has been developed.
It allows sampling frequency up to 200 MHz with 32 Mo memory capabilities per channel and 10 bit resolution digitizers.
Edge profile measurements are now available for a wide range of toroidal magnetic fields (from 3 to 4 T).
Related Results
Supra Regularity and Supra Normality Inspired by Supra-$\epsilon$-Open Sets
Supra Regularity and Supra Normality Inspired by Supra-$\epsilon$-Open Sets
In this article, as an extension of the concepts of supra-E-T2-space, supra-E-T1-space, and supra-E-T0-space, we present the notion of supra-E completely space. Furthermore, we dem...
Extraction of quasi-coherent modes based on reflectometry data
Extraction of quasi-coherent modes based on reflectometry data
Abstract
The identification of turbulence sources would drive to a deeper understanding of confinement dynamics in tokamak plasmas. Turbulence results from a mixture...
Linking White‐Tailed Deer Density, Nutrition, and Vegetation in a Stochastic Environment
Linking White‐Tailed Deer Density, Nutrition, and Vegetation in a Stochastic Environment
ABSTRACT
Density‐dependent behavior underpins white‐tailed deer (
Odocoileus virginianus
) theory and...
Coherent GNSS reflections over the sea surface - A classification for reflectometry
Coherent GNSS reflections over the sea surface - A classification for reflectometry
<p><span>The exploitation of GNSS signals for reflectometry opens several fields of application over the ocean, land and in the cryosphere. Coherence of...
Apport de l’angioscanner des troncs supra-aortiques dans le bilan étiologique des accidents vasculaires cérébraux
Apport de l’angioscanner des troncs supra-aortiques dans le bilan étiologique des accidents vasculaires cérébraux
Background : Stroke is the most debilitating and deadly neurovascular disease. 80% of strokes are ischaemic, with atheroma of the aortic arch and supra-aortic trunks being the aeti...
Experimental trends of reflectometry frequency spectra emerging from a systematic analysis of the Tore Supra database
Experimental trends of reflectometry frequency spectra emerging from a systematic analysis of the Tore Supra database
One major goal of data science applications is to extract patterns from large datasets. Such a database approach has been applied, for the first time in fusion science, towards a s...
Supra soft b-connectedness II: Some types of supra soft b-connectednes
Supra soft b-connectedness II: Some types of supra soft b-connectednes
This work is divided into two parts. In this second part, we introduce more properties of the notion of supra soft $b$-connectedness considered in the first part [Abd El-latif, A. ...
New signal processing technique for density profile reconstruction using reflectometry
New signal processing technique for density profile reconstruction using reflectometry
Reflectometry profile measurement requires an accurate determination of the plasma reflected signal. Along with a good resolution and a high signal to noise ratio of the phase meas...