H-mode Confinement in JET

M. Keilhacker, Christopher M. Bishop, J. G. Cordey, D. G. Muir, M. L. Watkins

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The analysis of charge exchange recombination spectra represents a very &allengin% problem due to the presence of many overlapping spectral lines. Conventional approaches are based on iterative least-squares optimization and suffer from the two difficulties of low speed and the need for a good initial approximation to the solution. This [suer problem necessitates considerable human supervision of the analysis procedure. In this paper we show how neural network techniques allow charge exchange data to be analysed very rapidly, to give an approximate solution without the need for supervision The network approach is well suited to the fast intershot analysis of large volumes of data, and can readily be implemented in dedicated hardware for real-time applications. The neural network can aIso be used to provide the initial guess for the standard least-squares algorithm when high accuracy is required.
Original languageEnglish
Title of host publicationProceedings 14th European Conference on Controlled Fusion and Plasma Physics, Madrid
Number of pages9
Publication statusPublished - 1 Jan 1987


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