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Title	355: q dependence of L-H transition power threshold
Name:	Guiding Wang wangg@fusion.gat.com	Affiliation:	University of California, Los Angeles
Research Area:	L-H Transition	Presentation time:	Not requested
Co-Author(s):	Peebles, Rhodes, Doyle, McKee, Yan	ITPA Joint Experiment :	No
Description:	To study the role of edge turbulence and zonal flows in the L-H transition via modifying zonal flow damping using q scan to observe L-H transition power threshold variation.	ITER IO Urgent Research Task :	No
Experimental Approach/Plan:	scan q but match other parameters (line-averaged density, Bt, plasma shape,temperature, rotation) to investigate edge q dependence of the L-H transition power threshold
Background:	Although the empirical scaling of the L-H transition power threshold evolves only global parameters, the L-H transition is an edge phenomenon believed to be related to edge turbulence and transport. The edge turbulence is a zonal flow-drift wave self-organized system. Zonal flows suffer Landau damping which has a strong q-dependence.
Resource Requirements:	ECH and NBI
Diagnostic Requirements:	all turbulence and profile diagnostics
Analysis Requirements:	lots
Other Requirements: