243: Assess sensitivity of ITER demonstration discharges to variations in key physics parameters
Name:
Edward Doyle ()
Affiliation:
University of California, Los Angeles
Research Area:
ITER Demonstration Discharges
Presentation time:
Requested
Co-Author(s):
--
Description:
This experiment proposes to scan key physics parameters in the four different types of ITER demonstration discharge. Key parameters to vary include shaping (e.g. squareness, X-point location), as well as average input NBI torque (ExB shearing rate), Te/Ti ratio, etc. Such a sensitivity study is essential as part of the projection to ITER, and is also required in justifying any potential change to the ITER detailed design, i.e. the ITER demonstration discharges should not be run so as to only determine performance at a "single point", which is difficult to interpret.
Experimental Approach/Plan:
Utilize DIII-D control tools to scan key physics parameters in ITER demonstration discharges. As a starting point, it is assumed that demonstration discharges have already been developed and stationary high performance obtained for each of the four ITER regimes (baseline, advanced inductive, hybrid and steady-state). Specific scans which can be performed include shaping (i.e. squareness and X-point location), as well as momentum input (via NBI co-/counter beam mix), and Te/Ti (using ECH).