Spectrum response and analysis of 77 GHz band collective Thomson scattering diagnostic for bulk and fast ions in LHD plasmas
作者: M. NishiuraS. KuboK. TanakaR. SekiS. OgasawaraT. ShimozumaK. OkadaS. KobayashiT. MutohK. KawahataT. WatariLHD Experiment GroupT. SaitoY. TatematsuS.B. KorsholmM. Salewski
作者单位: 1Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Chiba 277-8561, Japan
2National Institute for Fusion Science, 322–6 Oroshi-cho, Toki 509-5292, Japan
3FIR FU, University of Fukui, 3-9-1 Bunkyo, Fukui, 910-8507, Japan
4Association Euratom–DTU, Technical University of Denmark, DK-4000 Roskilde, Denmark
刊名: Nuclear Fusion, 2014, Vol.54 (2)
来源数据库: Institute of Physics Journal
DOI: 10.1088/0029-5515/54/2/023006
原始语种摘要: A collective Thomson scattering (CTS) diagnostic was developed and used to measure the bulk and fast ions originating from 180 keV neutral beams in the Large Helical Device (LHD). Electromagnetic waves from a gyrotron at 77 GHz with 1 MW power output function as both the probe and electron cyclotron heating beam. To clarify the diagnostic applicability of the gyrotron in the 77 GHz frequency band, we investigated the dependence of the probe and receiver beam trajectories in plasmas with high electron densities of (4–5) × 1019 m−3 and low electron densities of (1–2) × 1019 m−3. At high density, a stray radiation component was observed in the CTS spectrum whereas it was negligibly small at low density. The CTS spectrum was measured and analysed...
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  • scattering 散射
  • measured 量过的
  • cyclotron 回旋加速器
  • electron 电子
  • gyrotron 回旋管
  • spectrum 光谱
  • diagnostic 诊断的
  • heating 加热
  • dependence 从属
  • analysis 分析