DIII-D RESEARCH OPPORTUNITIES FORUM FOR THE 2008 EXPERIMENTAL CAMPAIGN
Login | Review | Submit | Logout | Help
Questions about this website? Contact Andrew LeBlanc Questions about ROF? Contact Chuck Greenfield
| Title | 87: Impact of Rotation on Incremental Diffusivity in Hybrid Discharges | ||
| Name: | Jim C. DeBoo ( |
Affiliation: | General Atomics |
| Research Area: | Rotation Physics | Presentation time: | Not requested | Co-Author(s): | -- |
| Description: | Study the impact of rotation on the incremental thermal electron diffusivity in Hybrid discharges. | ||
| Experimental Approach/Plan: | Apply electron heat pulses with modulated ECH to the outer region of the plasma and monitor the heat pulse propagation to the plasma core. Vary the plasma rotation with co/ctr NBI and characterize the impact on the heat pulse propagation. | ||
| Background: | Past experiments have shown that increased plasma rotation in hybrid plasmas increases the global confinement time and decreases the thermal diffusivity across the whole profile. Studying the impact of rotation on the incremental diffusivity, the change in diffusivity for a given change in temperature gradient, may help in the development of models and will certainly help further constrain any models developed to explain the key physics responsible for the improved transport. | ||
| Resource Requirements: | At least 2 gyrotrons | ||
| Diagnostic Requirements: | -- | ||
| Analysis Requirements: | Will need to develop the capability to simulate the time dependent response of the plasma with say the TGLF transport code or other transport model in order to compare the simulations with measurements. | ||
| Other Requirements: | -- | ||
Print this page