A Calibration of Setting of Mach Probes by Observing GAM Oscillations

• ITOH Kimitaka

  National Institute for Fusion Science Research Center for Plasma Turbulence, Kyushu University

• ZHAO Kaijun

  Southwestern Institute of Physics

• DONG Jiaqi

  Southwestern Institute of Physics

• ITOH Sanae-I.

  Research Center for Plasma Turbulence, Kyushu University Research Institute for Applied Mechanics, Kyushu University

• FUJISAWA Akihide

  Research Center for Plasma Turbulence, Kyushu University Research Institute for Applied Mechanics, Kyushu University

• INAGAKI Shigeru

  Research Center for Plasma Turbulence, Kyushu University Research Institute for Applied Mechanics, Kyushu University

• SASAKI Makoto

  Research Center for Plasma Turbulence, Kyushu University Research Institute for Applied Mechanics, Kyushu University

• NAGASHIMA Yoshihiko

  Research Center for Plasma Turbulence, Kyushu University Research Institute for Applied Mechanics, Kyushu University

• KOSUGA Yusuke

  Research Center for Plasma Turbulence, Kyushu University Research Institute for Applied Mechanics, Kyushu University Institute for Advanced Study, Kyushu University

• CHENG Jun

  Southwestern Institute of Physics

• KOBAYASHI Tatsuya

  National Institute for Fusion Science

Bibliographic Information

Other Title

• Calibration of Setting of Mach Probes by Observing GAM Oscillations

Abstract

The influence of relative displacement of Mach probe (which is placed near the top of magnetic surface) on the interference of signals is discussed. An error can arise in measured value of poloidal electric field. The Mach number perturbation at the GAM frequency has an interference from the density perturbation. The interference from the density perturbation can propagate to all of Mach number measurement. By observing the signals associated with GAM oscillations, the error in setting the probe arrays can be detected. This result can be applied to correct the positioning of probes.

Journal

• Plasma and Fusion Research

  Plasma and Fusion Research 11 (0), 1402002-1402002, 2016

  The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

• geodesic acoustic mode
• probe measurement
• Mach probe
• probe alignment

Details

• CRID: 1390282680229695232
• NII Article ID: 130005311633
• NII Book ID: AA12346675
• DOI: 10.1585/pfr.11.1402002
• ISSN: 18806821
• HANDLE: 10655/00012678
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/10697
• Web Site: https://www.jstage.jst.go.jp/article/pfr/11/0/11_1402002/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed