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Title |
25: Transport mechanisms induced by RMP |
Name: | Jose Boedo boedo@fusion.gat.com |
Affiliation: | University of California, San Diego |
Research Area: | ELM Control |
Presentation time: |
Not requested |
Co-Author(s): | D. Rudakov, Z Unterberg, M. Schaffer |
ITPA Joint Experiment : |
No |
Description: | RMP causes changes in the pedestal pressure gradient, keeping pedestal P-B stable. The detailed mechanism is not known. We propose to study the details of the plasma response to the RMP using probes. We also propose to create a particular plasma to enhance detectability of the RMP-induced response. |
ITER IO Urgent Research Task : |
Yes |
Experimental Approach/Plan: | Use ECH- heated discharges. Use elliptical, inner post limited discharges and n=1 (or n=2), m=3 perturbations to make islands visible and large in radius (1-2 cm) so the effects are detectable by all diagnostics. |
Background: | Preliminary experiments using this configuration yielded intriguing but incomplete results. Completion of this work is important to understand underlying mechanisms |
Resource Requirements: | ECH at 1-2 MW. COils |
Diagnostic Requirements: | scanning probes, Xpoint SXR camera. BES, fluctuation diagnostics |
Analysis Requirements: | TRIP3D, NIMROD, data analysis |
Other Requirements: | |