DIII-D RESEARCH OPPORTUNITIES FORUM FOR THE 2008 EXPERIMENTAL CAMPAIGN
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| Title | 400: Continue development of reactor optimized hybrid plasmas | ||
| Name: | Edward Doyle ( |
Affiliation: | University of California, Los Angeles |
| Research Area: | Core Integration (Advanced Inductive) | Presentation time: | Not requested | Co-Author(s): | -- |
| Description: | Attempt to maximize reactor compatible features of hybrid operation on DIII-D, specifically pressing to Te/Ti~1 and combining with low rotation operation. These goals address IEA/ITPA Transprt Physics joint experiments on effect of Te/Ti ratio and operation with low momentum input. | ||
| Experimental Approach/Plan: | Two approaches possible: (1) Continue 2007 experiments (see background section), at low to moderate q95 (~3-4). Progress here could be made by: (a) Using additional ECH heating (6 gyrotrons required?), to further raise Te/Ti ratio, and/or (b) Use counter-NBi capability to simultaneously lower rotation rates in hybrid plasmas with maximal Te/Ti ratio. (2) Change target plasmas so as to increase relative effect of ECH on plasma. | ||
| Background: | Experiments in 2007 (20070627 and 20070709) at q95 of ~3.3 and 4.2, attained Te/Ti~0.8 with four gyrotrons (~2.4 MW at plasma). Plasma rotation with ECH was matched in NBI only discharges by making use of co-/counter-NBI capability. | ||
| Resource Requirements: | 5 gyrotrons minimum, 7 beams required | ||
| Diagnostic Requirements: | -- | ||
| Analysis Requirements: | -- | ||
| Other Requirements: | -- | ||
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