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	339: Combined effect of TBM and NTM fields on fast-ion confinement
Name:	William Heidbrink heidbrink@fusion.gat.com	Affiliation:	University of California, Irvine
Research Area:	Stability & Disruption Avoidance	Presentation time:	Not requested
Co-Author(s):	Matt Lanctot, EP group	ITPA Joint Experiment :	Yes
Description:	Measure the fast-ion transport in a beam-heated plasma with a large-amplitude NTM with & without TBM fields.	ITER IO Urgent Research Task :	No
Experimental Approach/Plan:	Make a plasma with a reasonably steady, large amplitude (2,1) NTM. On a repeat shot, pulse on the TBM coils after the mode is established. Use ECE to measure the mode structure and all fast-ion diagnostics to infer the fast-ion transport.
Background:	A concern for ITER is that core MHD will transport alphas to the edge where TBM fields will cause concentrated losses at the wall. This proposal is one of three to address these possible synergistic effects.
Resource Requirements:	Beams; TBM mock-up coil
Diagnostic Requirements:	Fast-ion loss diagnostics (especially IRTV on TBM coils)
Analysis Requirements:	NUBEAM, FIDASIM. Best case analyzed with SPIRAL, OFMC, and ASCOT by EP experts.
Other Requirements: