title: Filterscope diagnostic system on the Experimental Advanced Superconducting Tokamak (EAST).
abstract: A filterscope diagnostic system has been mounted to observe the line emission and visible bremsstrahlung emission from plasma on the experimental advanced superconducting tokamak during the 2014 campaign. By this diagnostic system, multiple wavelengths including Dα(656.1 nm), Dγ(433.9 nm), He ii (468.5 nm), Li i (670.8 nm), Li ii (548.3 nm), C iii (465.0 nm), O ii (441.5 nm), Mo i (386.4 nm), W i (400.9 nm), and visible bremsstrahlung radiation (538.0 nm) are monitored with corresponding wavelength filters. All these multi-channel signals are digitized at up to 200 kHz simultaneously. This diagnostic plays a crucial role in studying edge localized modes and H-mode plasmas, due to the high temporal resolution and spatial resolution that have been designed into it.
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Xu
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: Z W
authors.initials: ZW
authors.lastname: Wu
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: W
authors.initials: W
authors.lastname: Gao
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: Y J
authors.initials: YJ
authors.lastname: Chen
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: C R
authors.initials: CR
authors.lastname: Wu
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: L
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: J
authors.initials: J
authors.lastname: Huang
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: J F
authors.initials: JF
authors.lastname: Chang
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: X J
authors.initials: XJ
authors.lastname: Yao
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: W
authors.initials: W
authors.lastname: Gao
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: P F
authors.initials: PF
authors.lastname: Zhang
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Jin
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China.
authors.forename: Y M
authors.initials: YM
authors.lastname: Hou
authors.affiliation: General Atomics, San Diego, California 92186-5608, USA.
authors.forename: H Y
authors.initials: HY
authors.lastname: Guo