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	139: TQ radiation distribution from R-2 MGI
Name:	Eric Hollmann ehollmann@ucsd.edu	Affiliation:	University of California, San Diego
Research Area:	Disruption Mitigation	Presentation time:	Not requested
Co-Author(s):	N. Commaux, R. Moyer, C. Lasnier	ITPA Joint Experiment :	No
Description:	Evaluate if R-2 MGI gives more uniform radiated heat loads than R+1 MGI.	ITER IO Urgent Research Task :	Yes
Experimental Approach/Plan:	Shut down LSN plasmas with R-2 MGI. Then shut down same target plasma with R+1 MGI. Optimize diagnostics to get good visible and IR camera imaging of injection location.
Background:	ITER is planning on shutting down disrupting shots with R+1 MGI. However, poloidal flows seem to move the injected impurities rapidly to the center post, so main chamber melting at the injection port and at the center post are a concern. It is possible that using R-2 injection will spread Prad loads more uniformly. Also, injecting at several locations simultaneously may help.
Resource Requirements:	135R-2 MGI injector
Diagnostic Requirements:	Fast bolometer, main chamber IR camera
Analysis Requirements:
Other Requirements: