DIII-D RESEARCH OPPORTUNITIES FORUM FOR THE 2013 EXPERIMENTAL CAMPAIGN Review | Direct submission with log-in | Request submission without log-in
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Title	182: Systematic test of paleoclassical transport
Name:	Sterling Smith smithsp@fusion.gat.com	Affiliation:	General Atomics
Research Area:	Turbulence & Transport	Presentation time:	Not requested
Co-Author(s):	Jim Callen	ITPA Joint Experiment :	No
Description:	The goal is to run a plasma where paleoclassical heat transport dominates. Most likely this is an Ohmic discharge. Diagnose the plasma with DIII-D's modern set of profile and fluctuation diagnostics.	ITER IO Urgent Research Task :	No
Experimental Approach/Plan:	Make ohmic plasmas at various toroidal fields and densities. If there is an adiabatic response to increasing density (p=nT => T=p/n) such that the temperature decreases, then the density should be pushed as high as possible. If the Greenwald limit is reached, then ECH power could be added to possibly overcome the Greenwald limit and reach for lower temperatures.
Background:	There is a predicted critical temperature, which depends on magnetic field, below which paleoclassical transport should dominate over gyrobohm transport. A previous study of various toroidal devices showed that paleoclassical transport may set the lower limit on transport [1]. A study of the pedestal database also indicates this [2]. [1] Callen, et al. 2007 [2] Smith, et al. 2012
Resource Requirements:	--
Diagnostic Requirements:	Standard.
Analysis Requirements:	Power balance analysis.
Other Requirements:	--