Scattering volume in the collective Thomson scattering measurement using high power gyrotron in the LHD
作者: S. KuboM. NishiuraK. TanakaD. MoseevS. OgasawaraT. ShimozumaY. YoshimuraH. IgamiH. TakahashiT.I. TsujimuraR. Makino
作者单位: 1National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
2Dept. Energy Eng. Sci., Nagoya University, Furo-cho, Chikusa, Nagoya 464-8606, Japan
3Graduate School of Frontier Science, the University of Tokyo, Kashiwa 277-8641, Japan
4Max-Planck Institute for Plasma Physics, Greifswald D-17491, Germany
刊名: Journal of Instrumentation, 2016, Vol.11 (6)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1748-0221/11/06/C06005
原始语种摘要: High-power gyrotrons prepared for the electron cyclotron heating at 77 GHz has been used for a collective Thomson scattering (CTS) study in LHD. Due to the difficulty in removing fundamental and/or second harmonic resonance in the viewing line of sight, the subtraction of the background ECE from measured signal was performed by modulating the probe beam power from a gyrotron. The separation of the scattering component from the background has been performed successfully taking into account the response time difference between both high-energy and bulk components. The other separation was attempted by fast scanning the viewing beam across the probing beam. It is found that the intensity of the scattered spectrum corresponding to the bulk and high energy components were almost proportional...
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  • gyrotron 回旋管
  • scattering 散射
  • viewing 观察
  • background 背景
  • scattered 散射的
  • subtraction 减法
  • probing 探测
  • volume 体积
  • proportional 成比例的
  • collective 集体