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

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4896960· OSTI ID:22303479

Lee, Seung Hun; Jang, Juhyeok; Hong, Joohwan; Jang, Siwon; Choe, Wonho ^[1]; Pacella, D.; Romano, A.; Gabellieri, L. ^[2]; Kim, Junghee ^[3]

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1. Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of)
2. Associazione Euratom-ENEA sulla Fusione, C.R. Frascati 00044 (Italy)
3. National Fusion Research Institute, Daejeon 305-806 (Korea, Republic of)

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.

• OSTI ID: 22303479
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

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