title: Installation of soft X-ray array diagnostics and its application to tomography reconstruction using synthetic KSTAR X-ray images.
abstract: 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 ne, Te, 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 Te 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.affiliation: Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.
authors.forename: Seung Hun
authors.initials: SH
authors.lastname: Lee
authors.affiliation: Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.
authors.forename: Juhyeok
authors.initials: J
authors.lastname: Jang
authors.affiliation: Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.
authors.forename: Joohwan
authors.initials: J
authors.lastname: Hong
authors.affiliation: Associazione Euratom-ENEA sulla Fusione, C.R. Frascati 00044, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Pacella
authors.affiliation: Associazione Euratom-ENEA sulla Fusione, C.R. Frascati 00044, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Romano
authors.affiliation: Associazione Euratom-ENEA sulla Fusione, C.R. Frascati 00044, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Gabellieri
authors.affiliation: Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.
authors.forename: Siwon
authors.initials: S
authors.lastname: Jang
authors.affiliation: National Fusion Research Institute, Daejeon 305-806, Republic of Korea.
authors.forename: Junghee
authors.initials: J
authors.lastname: Kim
authors.affiliation: Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.
authors.forename: Wonho
authors.initials: W
authors.lastname: Choe