title: Measurement of the edge plasma rotation on J-TEXT tokamak.
abstract: A multi-channel high resolution spectrometer was developed for the measurement of the edge plasma rotation on J-TEXT tokamak. With the design of two opposite viewing directions, the poloidal and toroidal rotations can be measured simultaneously, and velocity accuracy is up to 1 km∕s. The photon flux was enhanced by utilizing combined optical fiber. With this design, the time resolution reaches 3 ms. An assistant software "Spectra Assist" was developed for implementing the spectrometer control and data analysis automatically. A multi-channel monochromatic analyzer is designed to get the location of chosen ions simultaneously through the inversion analysis. Some preliminary experimental results about influence of plasma density, different magnetohydrodynamics behaviors, and applying of biased electrode are presented.
authors.affiliation: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
authors.forename: Z F
authors.initials: ZF
authors.lastname: Cheng
authors.forename: J
authors.initials: J
authors.lastname: Luo
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Wang
authors.forename: Z P
authors.initials: ZP
authors.lastname: Zhang
authors.forename: X L
authors.initials: XL
authors.lastname: Zhang
authors.forename: S Y
authors.initials: SY
authors.lastname: Hou
authors.forename: C
authors.initials: C
authors.lastname: Cheng
authors.forename: G
authors.initials: G
authors.lastname: Zhuang