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	303: Effect on lithium wall conditioning for Co-QH-mode and edge pedestal characteristics
Name:	Gary Jackson jackson@fusion.gat.com	Affiliation:	General Atomics
Research Area:	Inductive Scenarios	Presentation time:	Not requested
Co-Author(s):	K. Burrell, A. Garofalo, C. Chrobak, R. Maingi	ITPA Joint Experiment :	No
Description:	Use the new lithium dropper to reduce recycling and assess performance of Co-QH mode and modified H-mode edge pedestal parameters	ITER IO Urgent Research Task :	No
Experimental Approach/Plan:	MP 2012-94-02 was submitted but was not approved before the end of FY12 operations. The idea is to establish an USN discharge (147354) and inject a series of shots with lithium powder, evaluating changes (hopefully improvements) in QH mode. It is anticipated that the end of these discharges can also be used to examine H-mode pedestal physics, specifically any changes to the density pedestal width and other parameters.
Background:	Lithium conditioning has been very effective on NSTX in modifying edge pedestal parameters, and even producing ELM free H-mode. In DIII-D, the low recycling may also lead to a better EHO, particularly co-injected EHO.
Resource Requirements:	Lithium dropper (anticipated installation is spring 2013). Rev. Bt preferred.
Diagnostic Requirements:	Visible cameras viewing lithium injection port (tentatively 285 V+1)
Analysis Requirements:
Other Requirements: