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Abstract

This paper focuses on anomalous ion energy transport. A survey of relevant literature has been carried out and published transport coefficients have been collected together. The validity conditions for the applicability of various theories are defined and the results expressed in a form convenient for evaluation in relevant experimental conditions. The ability of the theoretical models to reproduce the observed transport properties of JET plasmas is then assessed by comparing predicted transport coefficients with those inferred from the local energy balance. The procedures used to analyse measured JET data are described. Observed experimental trends and the importance of the inevitable uncertainties in the determination of local transport parameters are discussed. The assessment of theoretically predicted ion energy transport is given for toroidal eta(i) and trapped ion modes. Several ion transport theories involving ion temperature gradient turbulence are discussed in terms of their applicability to JET plasmas, and the stability properties of the measured profiles are examined. Finally, theoretically predicted transport coefficients are compared with those inferred from experimental measurements.

Additional information

Authors: CONNOR J W ET AL., AEA Fusion, Culham Laboratory, Abingdon, Oxon. (GB);CORRIGAN G ET AL., JET Joint Undertaking, Abingdon, Oxon. (GB)
Bibliographic Reference: Report: JET-P(92)63 EN (1992) 66 pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 199310035 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: en
Available languages: en