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The research addresses the problem of removing sawtooth oscillations from multichannel plasma data in a self-consistent way, thereby preserving transients that have a different physical origin. The technique which does this is called the Generalized Singular Value Decomposition (GSVD), and its properties are discussed. Using the GSVD, an analysis is made of spatially resolved electron temperature measurements from the Tore Supra tokamak, made in transient regimes that are perturbed either by the laser blow-off injection of impurities or by pellet injection. Non-local transport issues are briefly discussed.

Additional information

Authors: DUDOK DE WIT T, Centre de Physique Théorique, Marseille (FR);ERBA M, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR);MATTIOLI M, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR);SÉGUI J L, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Report: EUR-CEA-FC-1613 EN (1997) 14pp.
Availability: Available from Association Euratom-CEA, CEN Cadarache, 13108 Saint-Paul-lez-Durance (FR)
Record Number: 199711715 / Last updated on: 1998-01-20
Original language: en
Available languages: en
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