title: Wavelength calibration of x-ray imaging crystal spectrometer on Joint Texas Experimental Tokamak.
abstract: The wavelength calibration of x-ray imaging crystal spectrometer is a key issue for the measurements of plasma rotation. For the lack of available standard radiation source near 3.95 Å and there is no other diagnostics to measure the core rotation for inter-calibration, an indirect method by using tokamak plasma itself has been applied on joint Texas experimental tokamak. It is found that the core toroidal rotation velocity is not zero during locked mode phase. This is consistent with the observation of small oscillations on soft x-ray signals and electron cyclotron emission during locked-mode phase.
authors.affiliation: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
authors.forename: W
authors.initials: W
authors.lastname: Yan
authors.affiliation: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Chen
authors.affiliation: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
authors.forename: W
authors.initials: W
authors.lastname: Jin
authors.affiliation: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
authors.forename: D W
authors.initials: DW
authors.lastname: Huang
authors.affiliation: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
authors.forename: Y H
authors.initials: YH
authors.lastname: Ding
authors.affiliation: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
authors.forename: J C
authors.initials: JC
authors.lastname: Li
authors.affiliation: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
authors.forename: X Q
authors.initials: XQ
authors.lastname: Zhang
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: School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
authors.forename: G
authors.initials: G
authors.lastname: Zhuang