title: Upgraded high time-resolved x-ray imaging crystal spectroscopy system for J-TEXT ohmic plasmas.
abstract: This paper presents the upgraded x-ray imaging crystal spectrometer (XICS) system on Joint Texas Experimental Tokamak (J-TEXT) tokamak and the latest experimental results obtained in last campaign. With 500 Hz frame rate of the new Pilatus detector and 5 cm × 10 cm spherically bent crystal, the XICS system can provide core electron temperature (Te), core ion temperature (Ti), and plasma toroidal rotation (VΦ) with a maximum temporal resolution of 2 ms for J-TEXT pure ohmic plasmas. These parameters with high temporal resolution are very useful in tokamak plasma research, especially for rapidly changed physical processes. The experimental results from the upgraded XICS system are presented.
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: W
authors.initials: W
authors.lastname: Jin
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: D W
authors.initials: DW
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: Q L
authors.initials: QL
authors.lastname: Li
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: W
authors.initials: W
authors.lastname: Yan
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: Y H
authors.initials: YH
authors.lastname: Luo
authors.affiliation: National Fusion Research Institute, Daejeon 305-333, South Korea.
authors.forename: S G
authors.initials: SG
authors.lastname: Lee
authors.affiliation: National Fusion Research Institute, Daejeon 305-333, South Korea.
authors.forename: Y J
authors.initials: YJ
authors.lastname: Shi
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: Y H
authors.initials: YH
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: R H
authors.initials: RH
authors.lastname: Tong
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: B
authors.initials: B
authors.lastname: Rao
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: Y H
authors.initials: YH
authors.lastname: Ding
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: G
authors.initials: G
authors.lastname: Zhuang