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Heat pulse propagation studies on Tore Supra have been carried out using the soft X-ray signals. Due to integration along the chord and the sensitivity of the measurements over a large number of plasma parameters, the chi(e)(hp) coefficient has been determined using only the delay time tau(p) along the radius. For Tore Supra this chi(e)(hp) coefficient tends to saturate at high density; this behaviour is confirmed by using a local transport code, where the values differ by a factor of two. With additional heating it appears that the chi(e)(hp) values lie in the same range as the ohmic case. Further experiments and other methods to derive the chi(e)(hp) from the measurements are under investigation, in order to study the plasma parameter dependence of this coefficient.

Additional information

Authors: CHEN X P ET AL., CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Paper presented: Workshop on perturbative studies and relation to global confinement, Utrecht (NL), March 16-18, 1992
Availability: Text not available
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