New evidence and impact of electron transport non-linearities based on new perturbative inter-modulation analysis
作者: M. van BerkelT. KobayashiH. IgamiG. VandersteenG.M.D. HogeweijK. TanakaN. TamuraH.J. ZwartS. KuboS. ItoH. TsuchiyaM.R. de BaarThe LHD Experiment Group
作者单位: 1Department of Fundamental Electricity and Instrumentation, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium
2DIFFER—Dutch Institute for Fundamental Energy Research, PO Box 6336, 5600HH Eindhoven, Netherlands
3Fellow of the Japan Society for the Promotion of Science (JSPS
4National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-city, Gifu, 509-5292, Japan
5Department of Mechanical Engineering, Eindhoven University of Technology, Dynamics and Control Group, PO Box 513, 5600MB Eindhoven, Netherlands
6Department of Applied Mathematics, University of Twente, PO Box 217, 7500AE, Enschede, Netherlands
7Department of Mechanical Engineering, Eindhoven University of Technology, Control Systems Technology Group, PO Box 513, 5600MB Eindhoven, Netherlands
刊名: Nuclear Fusion, 2017, Vol.57 (12)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1741-4326/aa827a
原始语种摘要: A new methodology to analyze non-linear components in perturbative transport experiments is introduced. The methodology has been experimentally validated in the Large Helical Device for the electron heat transport channel. Electron cyclotron resonance heating with different modulation frequencies by two gyrotrons has been used to directly quantify the amplitude of the non-linear component at the inter-modulation frequencies. The measurements show significant quadratic non-linear contributions and also the absence of cubic and higher order components. The non-linear component is analyzed using the Volterra series, which is the non-linear generalization of transfer functions. This allows us to study the radial distribution of the non-linearity of the plasma and to reconstruct linear...
全文获取路径: IOP 

  • linearity 线性
  • evidence 
  • methodology 方法学
  • modulation 
  • transport 输运
  • component 成分
  • electron 电子
  • inter 
  • impact 冲击碰撞
  • reconstructed 修]重构[建