DIII-D RESEARCH OPPORTUNITIES FORUM FOR THE 2013 EXPERIMENTAL CAMPAIGN
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| Title | 320: RWM excitation in the SSI target by reducing triangularity" | ||
| Name: | Michio Okabayashi mokabaya@pppl.gov | Affiliation: | Princeton Plasma Physics Laboratory |
| Research Area: | Stability & Disruption Avoidance | Presentation time: | Not requested |
| Co-Author(s): | Francesca Turco, | ITPA Joint Experiment : | No |
| Description: | Recently, the SSI group has developed betan AT plasmas ( 1.5 < q_min < 2) bn~4 near MHD limit. In these discharges, we observed EP-driven RWM and ELMs. Another observation was slow n=1 bursting mode without any D-alpha spike and mirnov MHD activity ( like n=1 magnetic bubble).
One hypothesis is that these discharges are caused by physics processes relate dto the ideal MHD driving force. The traditional approach for stabilizing high beta plasmas can be useful for improving the stability. For example, It is quite possible to increase betan by 10-20% by modifying the triangularity. This proposal is related to the ROF #138 |
ITER IO Urgent Research Task : | No |
| Experimental Approach/Plan: | -- | ||
| Background: | -- | ||
| Resource Requirements: | -- | ||
| Diagnostic Requirements: | -- | ||
| Analysis Requirements: | -- | ||
| Other Requirements: | -- | ||
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