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ABSTRACT
While much progress has been made
toward understanding fusion plasmas, the fundamental difficulty of controlling
the transport of energy and particles and thereby allowing the conditions
for sustained fusion to occur still exists. In this talk we will discuss
the issues and then a variety of techniques (with their physical
mechanisms) for controlling the transport in the context of a "simple"
1-D transport model. This model is based on the interactions between
sheared flows and the underlying turbulent transport that has been discussed
in previous recent talks on the fundamental dynamics of turbulent transport
in the presence of sheared flows. We will look at "real" techniques
such as injecting pellets into the plasma, doing modulated RF heating
etc, as control tools and will briefly discuss the issue of extrapolating
these techniques forward to the next generation of devices (ITER for
example). Questions about the recent progress and future are as always
welcome. |
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