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	340: Combined effect of TBM and Sawtooth 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 large sawtooth crashes with & without TBM fields.	ITER IO Urgent Research Task :	No
Experimental Approach/Plan:	Make a plasma with large sawtooth crashes (both in amplitude and inversion radius). This will probably be at low q95 and also will use beam combinations and ECCD that promote sawtooth stability. On a repeat shot, pulse on the TBM coils during the large sawtooth phase. 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, ECCD, TBM coil
Diagnostic Requirements:	All fast-ion diagnostics, especially IR camera viewing the TBM tiles.
Analysis Requirements:	Modelling with SPIRAL, ASCOT, and OFMC by EP experts
Other Requirements: