The L- to H-mode transition and momentum confinement in Alcator C-Mod plasmas
Author(s)Walk, John Reel, Jr
Low-energy confinement- to high-energy confinement-mode transition and momentum confinement in Alcator C-Mod plasmas
Massachusetts Institute of Technology. Dept. of Physics.
Earl S. Marmar and John E. Rice.
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Using a spatially-resolving x-ray spectrometer system, toroidal impurity rotation in Alcator C-Mod plasmas was measured. The propagation of the rotational velocity from the edge to the core of the plasma column was measured during the L- to H-mode transition. Momentum transport was measured in both Ohmic and ICRF-heated discharges, which produced EDA and ELM-free H-modes. The momentum transport was modeled by a simplified diffusion model, in which momentum diffusivity was substantially higher than neoclassically predicted values.
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2010.Cataloged from PDF version of thesis.Includes bibliographical references (p. 63-64).
DepartmentMassachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology