Fourier analysis of sawtooth heat pulse propagation and comparison with other methods using JET data
P. Mantica; F. De Luca; G. Gorini; A. Jacchia; G.M.J. Hogeweij; N.J. Lopes Cardozo; G.J. Kramer; A.C.C. Sips; P. Mantica; Istituto di Fisica del Plasma, Milan, Italy; F. De Luca; Istituto di Fisica del Plasma, Milan, Italy; G. Gorini; Istituto di Fisica del Plasma, Milan, Italy; A. Jacchia; Istituto di Fisica del Plasma, Milan, Italy; G.M.J. Hogeweij; Istituto di Fisica del Plasma, Milan, Italy; N.J. Lopes Cardozo; Istituto di Fisica del Plasma, Milan, Italy; G.J. Kramer; Istituto di Fisica del Plasma, Milan, Italy; A.C.C. Sips; Istituto di Fisica del Plasma, Milan, Italy
Журнал:
Nuclear Fusion
Дата:
1992-12-01
Аннотация:
A new method for the analysis of sawtooth heat pulse propagation is presented. The method is based on Fourier analysis of data where the statistical noise is reduced by a suitable noise reduction procedure. Besides the value of the incremental heat diffusivity (χ<sup>inc</sup>), information on the magnitude of nondiffusive transport may be extracted, depending on the quality of the data. The method is illustrated using JET data. A comparison is made with two other methods of analysis of sawtooth heat pulse propagation in use at JET, and good agreement is found among the χ<sup>inc</sup> values obtained
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