STELLOPT modeling of the 3D diagnostic response in ITER

The ITER three-dimensional (3D) diagnostic response to an n = 3 resonant magnetic perturbation (RMP) is modeled using the STELLOPT code. The in-vessel coils apply a RMP field which generates a 4 cm edge displacement from axisymmetry as modeled by the VMEC 3D equilibrium code. Forward modeling of flu...

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Bibliographic Details
Published inPlasma physics and controlled fusion Vol. 55; no. 8; pp. 84004 - 7
Main Authors Lazerson, S A, Chapman, I T
Format Journal Article
LanguageEnglish
Published 01.08.2013
Subjects
Controlled fusion
Diagnostic systems
Electron temperature
Flux
Lidar
Perturbation methods
Three dimensional
Three dimensional models
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Summary:The ITER three-dimensional (3D) diagnostic response to an n = 3 resonant magnetic perturbation (RMP) is modeled using the STELLOPT code. The in-vessel coils apply a RMP field 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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ISSN:0741-3335
1361-6587
DOI:10.1088/0741-3335/55/8/084004