title: Design of vibration compensation interferometer for Experimental Advanced Superconducting Tokamak.
abstract: A vibration compensation interferometer (wavelength at 0.532 μm) has been designed and tested for Experimental Advanced Superconducting Tokamak (EAST). It is designed as a sub-system for EAST far-infrared (wavelength at 432.5 μm) poloarimeter/interferometer system. Two Acoustic Optical Modulators have been applied to produce the 1 MHz intermediate frequency. The path length drift of the system is lower than 2 wavelengths within 10 min test, showing the system stability. The system sensitivity has been tested by applying a periodic vibration source on one mirror in the system. The vibration is measured and the result matches the source period. The system is expected to be installed on EAST by the end of 2014.
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei, Anhui 230031, People's Republic of China.
authors.forename: Y
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei, Anhui 230031, People's Republic of China.
authors.forename: G S
authors.initials: GS
authors.lastname: Li
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei, Anhui 230031, People's Republic of China.
authors.forename: H Q
authors.initials: HQ
authors.lastname: Liu
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei, Anhui 230031, People's Republic of China.
authors.forename: Y X
authors.initials: YX
authors.lastname: Jie
authors.affiliation: Department of Physics and Astronomy, University of California at Los Angeles, Los Angeles, California 90095, USA.
authors.forename: W X
authors.initials: WX
authors.lastname: Ding
authors.affiliation: Department of Physics and Astronomy, University of California at Los Angeles, Los Angeles, California 90095, USA.
authors.forename: D L
authors.initials: DL
authors.lastname: Brower
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei, Anhui 230031, People's Republic of China.
authors.forename: X
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei, Anhui 230031, People's Republic of China.
authors.forename: Z X
authors.initials: ZX
authors.lastname: Wang
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei, Anhui 230031, People's Republic of China.
authors.forename: L
authors.initials: L
authors.lastname: Zeng
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei, Anhui 230031, People's Republic of China.
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Zou
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei, Anhui 230031, People's Republic of China.
authors.forename: X C
authors.initials: XC
authors.lastname: Wei
authors.affiliation: University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
authors.forename: T
authors.initials: T
authors.lastname: Lan