Analysis of a dedicated rotation experiment in TFTR | Zendy

Weston M. Stacey | Zendy

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Analysis of a dedicated rotation experiment in TFTR

Author(s) -

Weston M. Stacey

Publication year - 1992

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/145482

Subject(s) - physics , toroid , torque , perturbation theory (quantum mechanics) , asymmetry , angular momentum , rotation (mathematics) , quantum electrodynamics , mechanics , parametric statistics , ion , momentum (technical analysis) , classical mechanics , computational physics , atomic physics , plasma , nuclear physics , quantum mechanics , mathematics , statistics , geometry , finance , economics

The results and analysis of a well-diagnosed, dedicated rotation experiment in TFTR are presented. Various neoclassical and anomalous theories for momentum transport are described and compared with the experimental data. The gyroviscocity theory is able to predict the measured central toroidal rotation speed, momentum confinement time and radial torque flow profile reasonably well when a poloidal asymmetry factor {tilde {Theta}} = 1.5 is used. The cold-ion-perpendicular-viscocity theory requires the assumption of an implausibly large number of cold ions in order to predict the magnitude of the experimental torque flow. The ion-temperature-gradient-mode theory, the untrapped-particle-electrostatic-mode theory and the stochastic-magnetic-perturbation theory all predict torque flows that differ greatly in magnitude, radial profile and parametric dependence from the experimental values

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