A real time instantaneous frequency estimator for rotating magnetic islands in a tokamak thermonuclear plasma

Author

D´Antona, G. ; Ferrero, Alessandro ; Ottoboni, Robert

Author_Institution

Dipartimento di Elettronica, Politecnico di Milano, Italy

fYear

1994

fDate

10-12 May 1994

Firstpage

321

Abstract

The evolution of rotating magnetic islands is a limit for the regime of stable operation in tokamak plasma confinement systems for nuclear fusion research, working close to operating conditions required in a future reactor. It is possible to counteract the growth of the magnetic islands by applying an external magnetic field, provided that the rotating speed of the magnetic islands is measured. The rotating speed can be determined from the measurement of the frequency of the electromotive force induced on a set of magnetic detectors. This paper proposes a digital method for the estimation of this frequency. The results of some laboratory tests performed on a prototype device of the estimator are reported

Keywords

Tokamak devices; computerised instrumentation; frequency measurement; magnetic devices; parameter estimation; plasma confinement; plasma diagnostic techniques; plasma magnetohydrodynamics; real-time systems; MHD; digital method; external magnetic field; laboratory tests; nuclear fusion; plasma confinement; real time instantaneous frequency estimator; rotating magnetic islands; rotating speed; tokamak thermonuclear plasma; Force measurement; Frequency estimation; Fusion reactors; Inductors; Magnetic confinement; Magnetic field measurement; Plasma confinement; Rotation measurement; Tokamaks; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1994. IMTC/94. Conference Proceedings. 10th Anniversary. Advanced Technologies in I & M., 1994 IEEE

Conference_Location

Hamamatsu

Print_ISBN

0-7803-1880-3

Type

conf

DOI

10.1109/IMTC.1994.352059

Filename

352059