title: Fast-ion Dαspectrum diagnostic in the EAST.
abstract: In toroidal magnetic fusion devices, fast-ion D-alpha diagnostic (FIDA) is a powerful method to study the fast-ion feature. The fast-ion characteristics can be inferred from the Doppler shifted spectrum of Dαlight according to charge exchange recombination process between fast ions and probe beam. Since conceptual design presented in the last HTPD conference, significant progress has been made to apply FIDA systems on the Experimental Advanced Superconducting Tokamak (EAST). Both co-current and counter-current neutral beam injectors are available, and each can deliver 2-4 MW beam power with 50-80 keV beam energy. Presently, two sets of high throughput spectrometer systems have been installed on EAST, allowing to capture passing and trapped fast-ion characteristics simultaneously, using Kaiser HoloSpec transmission grating spectrometer and Bunkoukeiki FLP-200 volume phase holographic spectrometer coupled with Princeton Instruments ProEM 1024B eXcelon and Andor DU-888 iXon3 1024 CCD camera, respectively. This paper will present the details of the hardware descriptions and experimental spectrum.
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: Y M
authors.initials: YM
authors.lastname: Hou
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: C R
authors.initials: CR
authors.lastname: Wu
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: J
authors.initials: J
authors.lastname: Huang
authors.affiliation: Department of Physics and Astronomy, University of California, Irvine, California 92697, USA.
authors.forename: W W
authors.initials: WW
authors.lastname: Heidbrink
authors.affiliation: Diagnostic Team, ITER Organization, Route de Vinon-sur-Verdon, Saint Paul Lez Durance 13067, France.
authors.forename: M G
authors.initials: MG
authors.lastname: von Hellermann
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Xu
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Jin
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: J F
authors.initials: JF
authors.lastname: Chang
authors.affiliation: Department of Physics and Astronomy, University of California, Irvine, California 92697, USA.
authors.forename: Y B
authors.initials: YB
authors.lastname: Zhu
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: W
authors.initials: W
authors.lastname: Gao
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: Y J
authors.initials: YJ
authors.lastname: Chen
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: B
authors.initials: B
authors.lastname: Lyu
authors.affiliation: School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors.forename: R J
authors.initials: RJ
authors.lastname: Hu
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: P F
authors.initials: PF
authors.lastname: Zhang
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: L
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: W
authors.initials: W
authors.lastname: Gao
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.
authors.forename: Z W
authors.initials: ZW
authors.lastname: Wu
authors.affiliation: School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Yu
authors.affiliation: School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors.forename: M Y
authors.initials: MY
authors.lastname: Ye
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, Anhui 230031, China.