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Linghan WAN (万凌寒), Zhoujun YANG (杨州军), Ruobing ZHOU (周若冰), Xiaoming PAN (潘晓明), Chi ZHANG (张弛), Xianli XIE (谢先立), Bowen RUAN (阮博文). Design of Q-band FMCW reflectometry for electron density profile measurement on the Joint TEXT tokamak[J]. Plasma Science and Technology, 2017, 19(2): 25602-025602. DOI: 10.1088/2058-6272/19/2/025602
Citation: Linghan WAN (万凌寒), Zhoujun YANG (杨州军), Ruobing ZHOU (周若冰), Xiaoming PAN (潘晓明), Chi ZHANG (张弛), Xianli XIE (谢先立), Bowen RUAN (阮博文). Design of Q-band FMCW reflectometry for electron density profile measurement on the Joint TEXT tokamak[J]. Plasma Science and Technology, 2017, 19(2): 25602-025602. DOI: 10.1088/2058-6272/19/2/025602

Design of Q-band FMCW reflectometry for electron density profile measurement on the Joint TEXT tokamak

Funds: This work is supported by the National Magnetic Confinement Fusion Energy Research Project (No.2014GB108001 and No.2015GB120003) and Fundamental Research Funds for the Central Universities of China, Huazhong University of Science and Technology (Grant No. 2015TS010).
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  • Received Date: May 17, 2016
  • The Q-band (33–50 GHz) fast sweep frequency modulated continuous wave (FMCW) reflectometry has been recently developed for electron density profile measurement on the Joint TEXT tokamak. It operates in ordinary mode (O-mode) with a 20 μs sweeping period, covering the density range from 1×1019m−3 to 3×1019 m−3. On the bench test, a Yttrium Iron Garnet (YIG) filter is used for the dynamic calibration of the voltage controlled oscillator (VCO) to obtain a linear frequency sweep. Besides, the use of a power combiner helps to improve the sideband suppression level of the single side-band modulator (SSBM). The reconstructed density profiles are presented, which demonstrate the capability of the refiectometry.
  • [1]
    Hartfuss H J, Geist T and Hirsch M 1997 Plasma Phys. Control. Fusion 39 1693
    [2]
    Simonet F 1985 Rev. Sci. Instrum. 56 664
    [3]
    Laviron C et al 1996 Plasma Phys. Control. Fusion 38 905
    [4]
    Moreau P et al 2000 Rev. Sci. Instrum. 71 74
    [5]
    Zhang S et al 2014 Plasma Sci. Technol. 16 311
    [6]
    Xiao W W et al 2006 Plasma Sci. Technol. 8 133
    [7]
    Zhong W L et al 2014 Rev. Sci. Instrum. 85 013507
    [8]
    Zhuravlev V et al 1997 Fusion Engineering and Design 34 421
    [9]
    Sabot R et al 2007 Plasma Phys. Control. Fusion 48 561
    [10]
    Mazzucato E 1998 Rev. Sci. Instrum. 69 2201
    [11]
    Clairet F et al 2010 Rev. Sci. Instrum. 81 10D903
    [12]
    Zhuang G et al 2013 Nucl. Fusion 53 104014
    [13]
    Sabot R et al 2009 IEEE Proc. First Int. Conf. on Advancements in Nuclear Instrumentation Measurement Methods and Applications (Marseille, France) (doi: 10.1109/ANIMMA.2009.5503756)

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