DIII-D RESEARCH OPPORTUNITIES FORUM FOR THE 2013 EXPERIMENTAL CAMPAIGN Review | Direct submission with log-in | Request submission without log-in
Print this page

Print this page
Title	135: Measurement of RE diffusion to center post
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	ITPA Joint Experiment :	No
Description:	Try to measure RE radial diffusion coefficient.	ITER IO Urgent Research Task :	Yes
Experimental Approach/Plan:	Create RE plateau with small Ar pellet injection. Hold beam and move into center post, then scan vertically along center post to get best chance of observing SXR emission spot. If successful, repeat with D2-diluted RE beam to try to reduce radial transport coefficient by pumping out argon content.
Background:	Anomalous loss of REs during RE plateau is suspected to be due to radial transport. Attempt to observe this transport directly from SXR emission spot on center post.
Resource Requirements:	1 day run time. Small Ar pellet injector. D2 injector (SPI or MGI).
Diagnostic Requirements:	165 CdTe array with raised view chords
Analysis Requirements:
Other Requirements: