DIII-D RESEARCH OPPORTUNITIES FORUM FOR THE 2008 EXPERIMENTAL CAMPAIGN
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| Title | 197: Simultaneous ECCD control of 3/2 and 2/1 NTMs | ||
| Name: | Robert J. La Haye ( |
Affiliation: | General Atomics |
| Research Area: | NTM Stabilization | Presentation time: | Not requested | Co-Author(s): | D. Humphreys, C. Petty, R. Prater, E. Strait |
| Description: | At least 2 gyrotrons of ECCD directed at q=3/2 and 4 more at q=2 for simultaneous control of both modes. | ||
| Experimental Approach/Plan: | Make an ITER Scenario plasma, perhaps at higher q95 than the 3.2 planned,
raise beta to as usual first get 3/2 and then 2/1 NTMs. Apply ECCD at q=3/2 with alignment by RSURF and ALSO at q=2 with alignment by ZSURF. If real-time mirror steering is available, this would be used as in ITER for one or better both modes. | ||
| Background: | ITER must remove both the 3/2 AND the 2/1 modes which are expected to prevent successful performance. This requires dual-mode control which has not been demonstrated anywhere. | ||
| Resource Requirements: | 6 gyrotrons minimum.
Desirable is at least one launcher with real-time steering or better three. But RSURF and ZSURF simultaneous control is in the PCS and launch can be done to make these nearly orthogonal for q=3/2 and 2/1. | ||
| Diagnostic Requirements: | None special. | ||
| Analysis Requirements: | TORAY-GA | ||
| Other Requirements: | -- | ||
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