STELLOPT Modeling of the 3D Diagnostic Response in ITER
Authors: S. A. Lazerson and I.T. Chapman
Abstract:
The ITER three dimensional diagnostic response to an n=3 resonant
magnetic perturbation is modeled using the STELLOPT code. The in-vessel coils
apply a resonant magnetic perturbation (RMP) fi eld which generates a 4 cm edge
displacement from axisymmetry as modeled by the VMEC 3D equilibrium code.
Forward modeling of flux loop and magnetic probe response with the DIAGNO
code indicates up to 20 % changes in measured plasma signals. Simulated LIDAR
measurements of electron temperature indicate 2 cm shifts on the low field side of
the plasma. This suggests that the ITER diagnostic will be able to diagnose the 3D
structure of the equilibria.
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Submitted to: Plasma Physics and Controlled Fusion (May 2013)
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Download PPPL-4875 (pdf KB 12 pp)
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