title: Development of advanced x-ray imaging crystal spectrometer utilizing a large area segmented proportional counter for KSTAR.
abstract: An advanced x-ray imaging crystal spectrometer (XICS) for KSTAR tokamak has been developed by utilizing a segmented two dimensional (2D) position-sensitive multiwire proportional counter. The XICS for the KSTAR tokamak provides time-resolved measurements of the radial ion and electron temperature profiles, toroidal plasma rotation velocity, and ionization equilibrium. The segmented 2D detector with delay-line readout and supporting electronics has been adopted to improve the photon count rate capability. The current fabrication status of the XICS for the KSTAR tokamak and the first performance test results of the prototype segmented 2D detector are presented.
authors.affiliation: National Fusion Research Center, Taejeon 305-333, Korea. sglee@nfrc.re.kr
authors.forename: S G
authors.initials: SG
authors.lastname: Lee
authors.forename: J G
authors.initials: JG
authors.lastname: Bak
authors.forename: U W
authors.initials: UW
authors.lastname: Nam
authors.forename: M K
authors.initials: MK
authors.lastname: Moon
authors.forename: J K
authors.initials: JK
authors.lastname: Cheon
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013052:Spectrometry, X-Ray Emission / Q000295:instrumentation* / Q000379:methods