|Title||Fourier-Analysis of Sawtooth Heat Pulse-Propagation and Comparison with Other Methods Using Jet Data|
|Publication Type||Journal Article|
|Year of Publication||1992|
|Authors||P. Mantica, F. De Luca, G. Gorini, A. Jacchia, G.MD Hogeweij, N.JL Cardozo, G.J Kramer, A.C.C. Sips|
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 (chi(inc)), information on the magnitude of non-diffusive 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 chi(inc) values obtained.
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