In this work we report the successful application of an innovative method, based on the Sparse Representation of signals, to perform a real-time, unsupervised detection of the individual components in a frequency degenerate, multi-harmonic spectrum, using a small number of data unevenly sampled in the spatial domain. This method has been developed from its original applications in astronomy, and is now routinely used in the JET thermonuclear fusion experiment to obtain the decomposition of a spectrum of high-frequency (∼10–500 kHz range) magnetic instabilities with a sub-ms time resolution, allowing the real-time tracking of its individual components as the plasma background evolves. This work opens a path towards developing real-time contr...
In this paper, we report the novel experimental observation of both unstable and stable toroidicity-...
A microwave interferometry technique is applied for the first time for detecting a discrete spectrum...
International audienceA common problem in many complex physical systems is the determination of puls...
In this work we report the successful application of an innovative method, based on the Sparse Repre...
We present the real-time VME system used to detect and track MHD instabilities, and particularly Alf...
Efficient, real-time and automated data analysis is one of the key elements for achieving scientific...
JET plasmas show fluctuations from a large variety of MHD instabilities. A combination of spectral a...
The stability of Alfven eigenmodes (AEs) is studied experimentally in the JET tokamak by observing t...
The linear stability properties of plasma collective modes is investigated in the JET tokamak using ...
Toroidal Alfven Eigenmodes and a new class of modes, the Alfven cascades, excited by energetic ions ...
The main characteristics of toroidal Alfven eigenmodes (TAEs) have been successfully investigated in...
The main characteristics of toroidal Alfven eigenmodes (TAEs) have been successfully investigated in...
Experiments are conducted on the JET tokamak to demonstrate the diagnostic potential of Magneto-Hydr...
International audienceA common problem in many complex physical systems is the determination of puls...
Alfven Eigenmodes (AEs) and other magnetohydrodynamic (MHD) phenomena have been studied at the Joint...
In this paper, we report the novel experimental observation of both unstable and stable toroidicity-...
A microwave interferometry technique is applied for the first time for detecting a discrete spectrum...
International audienceA common problem in many complex physical systems is the determination of puls...
In this work we report the successful application of an innovative method, based on the Sparse Repre...
We present the real-time VME system used to detect and track MHD instabilities, and particularly Alf...
Efficient, real-time and automated data analysis is one of the key elements for achieving scientific...
JET plasmas show fluctuations from a large variety of MHD instabilities. A combination of spectral a...
The stability of Alfven eigenmodes (AEs) is studied experimentally in the JET tokamak by observing t...
The linear stability properties of plasma collective modes is investigated in the JET tokamak using ...
Toroidal Alfven Eigenmodes and a new class of modes, the Alfven cascades, excited by energetic ions ...
The main characteristics of toroidal Alfven eigenmodes (TAEs) have been successfully investigated in...
The main characteristics of toroidal Alfven eigenmodes (TAEs) have been successfully investigated in...
Experiments are conducted on the JET tokamak to demonstrate the diagnostic potential of Magneto-Hydr...
International audienceA common problem in many complex physical systems is the determination of puls...
Alfven Eigenmodes (AEs) and other magnetohydrodynamic (MHD) phenomena have been studied at the Joint...
In this paper, we report the novel experimental observation of both unstable and stable toroidicity-...
A microwave interferometry technique is applied for the first time for detecting a discrete spectrum...
International audienceA common problem in many complex physical systems is the determination of puls...