DIII-D RESEARCH OPPORTUNITIES FORUM FOR THE 2008 EXPERIMENTAL CAMPAIGN
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| Title | 459: Massive Gas Injection of ECH Heated Plasma | ||
| Name: | Tom Jernigan ( |
Affiliation: | Oak Ridge National Laboratory |
| Research Area: | Disruptions | Presentation time: | Not requested | Co-Author(s): | -- |
| Description: | Test MGI mitigation in ECH heated plasmas to compare with NBI heated plasma mitigation to see if ECH heating would provide a more reliable target plasma for MGI experiments. | ||
| Experimental Approach/Plan: | Use ECH H-mode plasmas to test ECH launcher compatibility with MGI disruption mitigation, especially with argon injection. Basically the plan is to run a series of MGI shots into ECH heated plasmas to test the compatibility of the ECH launchers with the large quanties of gas injected. Also check to see if there are obvious differences in the mitigation between beam heated and ECH heated discharges. | ||
| Background: | Contamination and subsequent un-reliability of the neutral beam sources has become a problem with the large quanties of gas injected with the Medusa fast valve array. This experiment is to see if the ECH heating system is compatible with MGI, particularly with heavier gases such as argon and provides a more reliable target for MGI experiments. | ||
| Resource Requirements: | 4 gyrotrons | ||
| Diagnostic Requirements: | Usual disruption diagnostics and usual plasma diagnostics (except those requiring beams) | ||
| Analysis Requirements: | Usual MGI analysis | ||
| Other Requirements: | -- | ||
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