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Abstract

Methods of inverting line integrated data using coordinates, which are adapted to problems arising from Hamiltonian flows, are presented. They are exemplified for measurements of soft X-rays on tokamaks with widely arbitrary poloidal cross-section. Boundary conditions can be met and cause fewer ghosts for most of the present day tokamaks. The soft X-ray measurements are then used to improve the flux function, obtained from codes using magnetic measurements as input. Oscillatory phenomena such as sawtooth crash precursors on tokamaks are investigated by decomposing the profiles into space-like eigenfunctions and their time dependencies.

Additional information

Authors: FUCHS G, Forschungszentrum Jülich GmbH (KFA) (DE);MIURA Y, Japan Energy Research Institute, Naka Fusion Research Establishment, Department of Fusion Plasma Research (JP);MORI M, Japan Energy Research Institute, Naka Fusion Research Establishment, Department of Fusion Plasma Research (JP)
Bibliographic Reference: Article: Plasma Physics and Controlled Fusion, Vol. 36 (1994) pp. 307-316
Record Number: 199410219 / Last updated on: 1994-11-28
Category: PUBLICATION
Original language: en
Available languages: en