DIII-D RESEARCH OPPORTUNITIES FORUM FOR THE 2008 EXPERIMENTAL CAMPAIGN
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| Title | 355: Controlling q(0) with Elipticity induced Alfven Eigenmodes in DIIID | ||
| Name: | Gerrit J. Kramer ( |
Affiliation: | Princeton Plasma Physics Laboratory |
| Research Area: | Energetic Particles | Presentation time: | Not requested | Co-Author(s): | G.J. Kramer, R. Nazikian, N.N. Gorelenkov |
| Description: | Ellipticity induced Alfven Eigenmodes have frequencies that are twice the
TAE frequency and they reside in the gap above the TAE gap. On JT60U EAEs have been observed at the q=1 surface after giant sawtooth crashes. In those experiments there was circumstantial evidence that those EAEs induce fast-ion transport from the core to the edge regions of the plasma thereby hampering the recovery of the full plasma performance after such a crash. | ||
| Experimental Approach/Plan: | We propose to study these EAEs with internal measurements and try to
clarify the effect that those modes have on fast-ion transport. Because those modes reside at the q=1 surface and close to the Alfven continuum we also like to study the effects of plasma rotation on the stability of those modes. The upgraded beam capabilities for controlling the plasma rotation together with the excellent fluctuation diagnostics are well suited for such an experiment. | ||
| Background: | -- | ||
| Resource Requirements: | -- | ||
| Diagnostic Requirements: | -- | ||
| Analysis Requirements: | -- | ||
| Other Requirements: | -- | ||
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