DIII-D RESEARCH OPPORTUNITIES FORUM FOR THE 2008 EXPERIMENTAL CAMPAIGN
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| Title | 90: RMP ELM-Suppression With Higher Confinement | ||
| Name: | C. Craig Petty ( |
Affiliation: | General Atomics |
| Research Area: | ELM Control & Pedestal Physics | Presentation time: | Not requested | Co-Author(s): | -- |
| Description: | Increase the H-mode confinement factor to H_89P>2 during RMP ELM-suppression by adopting a standard AT plasma shape with a high pedestal stability limit. Use only the minimum amount of I-coil current to decrease the pedestal pressure below the peeling-ballooning stability limit. Use a PCS feedback-controlled hybrid scenario as the target plasma with q95=3.7 and beta_N>2.5. | ||
| Experimental Approach/Plan: | Similar experimental plan as 2007-02-04, but use the standard hybrid shape and the standard hybrid ramp up. May need to use ECCD at the q=1.5 surface to control the size of the 3/2 NTM at high beta (beta_N>2.2). | ||
| Background: | Revisit RMP ELM control in the standard AT shape to obtain higher pedestal height, and therefore higher H-mode confinement factors. Want to demonstrate ELM suppression with H_89P>2 at high beta. | ||
| Resource Requirements: | NBI: Require all 5 co sources.
ECH: Minimum 3 gyrotrons. | ||
| Diagnostic Requirements: | -- | ||
| Analysis Requirements: | -- | ||
| Other Requirements: | -- | ||
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