DIII-D RESEARCH OPPORTUNITIES FORUM FOR THE 2008 EXPERIMENTAL CAMPAIGN
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| Title | 208: Measure the NBCD profile | ||
| Name: | Pete Politzer ( |
Affiliation: | General Atomics |
| Research Area: | Heating & Current Drive | Presentation time: | Not requested | Co-Author(s): | -- |
| Description: | Using the capability provided by co+counter beams, determine the current profile driven by NBI. | ||
| Experimental Approach/Plan: | By modulating between co and counter beams, determine the NBCD profile. The base case should be done in a quiet, low beta discharge with no evidence of fast ion scattering or diffusion. The measurements should be extended to cases with tearing modes, AE modes, sawteeth, and other possible mechanisms for radial diffusion of fast ions. | ||
| Background: | At present the NBCD profile is determined only by modeling calculations, and experimental verification is needed. In many cases, ad hoc corrections must be made to account for nonclassical fast ion orbit effects. These also are now quantifiable. | ||
| Resource Requirements: | -- | ||
| Diagnostic Requirements: | -- | ||
| Analysis Requirements: | -- | ||
| Other Requirements: | -- | ||
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