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Title: Preparations for the motional Stark effect diagnostic on EAST

Measurement and control of the current profile is essential for high performance and steady state operation of Experimental Advanced Superconducting Tokamak (EAST). For this purpose, a conventional Motional Stark Effect (MSE) diagnostics utilizing photoelastic modulators is proposed and investigated. The pilot experiment includes one channel to verify the feasibility of MSE, whose sightline intersects with Neutral Beam Injection at major radius of R = 2.12 m. A beam splitter is adopted for simultaneous measurements of Stark multiplets and their polarization directions. A simplified simulation code was also developed to explore the Stark splitting spectra. Finally, the filter is optimized based on the viewing geometry and neutral beam parameters.
Authors:
; ; ; ;  [1] ; ; ; ;  [2] ;  [2] ;  [3]
  1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031 (China)
  2. School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026 (China)
  3. (Korea, Republic of)
Publication Date:
OSTI Identifier:
22303685
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAM INJECTION; CONTROL; HT-7U TOKAMAK; MULTIPLETS; POLARIZATION; SIMULATION; SPECTRA; STARK EFFECT; STEADY-STATE CONDITIONS