Effect of background polarized light in magnetic equilibrium reconstruction
ORAL
Abstract
In addition to the multi-channel motional Stark effect (MSE) diagnostic system for the Korea Superconducting Tokamak Advanced Research (KSTAR), the polychrometer-based MSE system with the same number of sight lines has been adopted for the simultaneous measurement and subtraction of the background polarized light. Two independent MSE systems are compared to estimate the effect of the background polarized light with intermediate plasma densities on the magnetic equilibrium reconstruction. The systematic errors introduced from the background polarized light evaluated from this comparative studies can be extrapolated for high-density plasma discharges such as those in ITER.
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Presenters
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Jin-Seok Ko
National Fusion Research Institute, Natl Fusion Res Inst, University of Science and Technology in Korea, NFRI, National Fusion Research Institute, National Fusion Research Institute
Authors
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Jin-Seok Ko
National Fusion Research Institute, Natl Fusion Res Inst, University of Science and Technology in Korea, NFRI, National Fusion Research Institute, National Fusion Research Institute
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Steven Douglas Scott
Princeton Plasma Physics Laboratory, PPPL
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Robert T Mumgaard
Commonwealth Fusion Systems, Massachusetts Inst of Tech-MIT, CFS