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Title: Installation of soft X-ray array diagnostics and its application to tomography reconstruction using synthetic KSTAR X-ray images

Four-array system of soft X-ray diagnostics was installed on KSTAR tokamak. Each array has 32 viewing chords of two photo-diode array detectors with spatial resolution of 2 cm. To estimate signals from the soft X-ray radiation power, typical n{sub e}, T{sub e}, and argon impurity line radiation profiles in KSTAR are chosen. The photo-diodes were absolutely calibrated as a function of the incident photon energy in 2–40 keV range with a portable X-ray tube. Two-dimensional T{sub e} image properties by multi-energy method were simulated and visualized with six combinations of beryllium filter sets within the dynamic range of signal ratio.
Authors:
; ; ; ;  [1] ;  [2] ; ; ;  [3] ;  [4] ;  [2]
  1. Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of)
  2. (Korea, Republic of)
  3. Associazione Euratom-ENEA sulla Fusione, C.R. Frascati 00044 (Italy)
  4. National Fusion Research Institute, Daejeon 305-806 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22303479
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; ARGON; BERYLLIUM; ENERGY DEPENDENCE; FILTERS; PHOTODIODES; PHOTONS; SIGNALS; SOFT X RADIATION; SPATIAL RESOLUTION; TOKAMAK DEVICES; TOMOGRAPHY; X-RAY TUBES