ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
Anomalous transport in fusion plasmas remains an enigma requiring explanation. A predictive capability is highly desirable if confinement enhancement regimes such as H-mode or super shots are to be extrapolated to the next phase in development of the International Fusion program, epitomized, for example, in ITER. Therefore, identification of the role that electrostatic turbulence plays in confinement is a critical issue requiring detailed experimental data capable of testing and challenging existing theoretical models. This paper presents microturbulence measurements obtained on the DIII-D and TEXT tokamaks utilizing heterodyne, far-infrared collective scattering and reflectometry techniques. The experimental systems are described on both machines and emphasis placed on results obtained during the L–H transition, ELM activity, and saturated ohmic operation where ion temperature gradient driven (ITGD) turbulence is theoretically predicted to exist. This work was supported by the U.S. Department of Energy under contract Nos. DE-FG03-86ER53225, DE-AC05-78ET53043, and DE-AC03-89ER51114.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1141769
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