DIII-D RESEARCH OPPORTUNITIES FORUM FOR THE 2008 EXPERIMENTAL CAMPAIGN
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| Title | 18: Measure intrinsic rotation in the JET shape | ||
| Name: | John Degrassie ( |
Affiliation: | General Atomics |
| Research Area: | Rotation Physics | Presentation time: | Not requested | Co-Author(s): | L.-G. Eriksson (EFDA) |
| Description: | Operate ELMing ECH H-mode discharges in the JET identity shape in DIII-D and measure the intrinsic velocity profiles. | ||
| Experimental Approach/Plan: | Run the JET shape with high BT and modest BetaN and make the standard intrinsic rotation measurements. The back end of the discharges can be used for near-balanced NBI intrinsic rotation studies also (proposal #14). When taking the dimensionless parameters to JET-size, BT invariably turns out to be in the 1T range. It seems possible to make an RF H-mode in JET at such a low BT but power delivered may be limited. So it is important to have modest BetaN to match. | ||
| Background: | |||
| Resource Requirements: | ECH: 3 or more gyrotrons.
NBI: a) For the ECH intrinsic measurements only the diagnostic beams are needed: 30L, 33L/R. b) to utilize the remainder of the shot for balanced beam intrinsic rotation at higher Beta we need at least 21R/L, with 15L/R desirable. | ||
| Diagnostic Requirements: | standard for intrinsic rotation. | ||
| Analysis Requirements: | -- | ||
| Other Requirements: | -- | ||
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