title: Experimental results from an X-ray imaging crystal spectrometer utilizing multi-wire proportional counter for KSTAR.
abstract: The inconsistency of the first experimental results from the X-ray imaging crystal spectrometer for the Korea Superconducting Tokamak Advanced Research device utilizing a multi-wire proportional counter (MWPC) is clarified after improving the photon-count rate of the data acquisition system for the MWPC and ground loop isolator for the whole spectrometer system. The improved MWPC is successfully applied to pure Ohmic plasmas as well as plasmas with high confinement modes.
authors.affiliation: National Fusion Research Institute, Daejeon, South Korea.
authors.forename: S G
authors.initials: SG
authors.lastname: Lee
authors.affiliation: Korea University of Science and Technology, Daejeon, South Korea.
authors.forename: J W
authors.initials: JW
authors.lastname: Yoo
authors.affiliation: National Fusion Research Institute, Daejeon, South Korea.
authors.forename: Y S
authors.initials: YS
authors.lastname: Kim
authors.affiliation: Korea Astronomy and Space Science Institute, Daejeon, South Korea.
authors.forename: U W
authors.initials: UW
authors.lastname: Nam
authors.affiliation: Korea Atomic Energy Research Institute, Daejeon, South Korea.
authors.forename: M K
authors.initials: MK
authors.lastname: Moon