Development of the calibration method for a fast steering antenna for investigating the mode conversion window used in EBW heating in the LHD plasma

• Goto, Yuki

• Kubo, Shin

• Igami, Hiroe

• Nishiura, Masaki

• SHIMOZUMA, Takashi

• Yoshimura, Yasuo

• Takahashi, Hiromi

• TSUJIMIRA, Toru

Abstract

0000-0001-6636-8500

In this study, we developed a calibration method for a fast steering antenna for investigating the mode conversion window used in electron Bernstein wave heating in the large helical device. The calibration was carried out in under-dense plasma against a line-of-sight with an optical thickness which varied spatially. Although multi-reflected background radiation becomes dominant in optically thin lines-of-sight, we succeeded in calibrating the fast steering antenna by including the effect of multi-reflected background radiation in the solution of the radiation transfer equation as the constant by which the temperature of the center of the plasma is multiplied. In addition, we report the initial results of experiments investigating the mode conversion window in over-dense plasma using the calibrated antenna.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 58 (10), 106001-, 2019-09-09

  IOP Publishing

Keywords

• General Physics and Astronomy
• Physics and Astronomy (miscellaneous)
• General Engineering

Details

• CRID: 1050288603084124032
• NII Article ID: 120007098357
• NII Book ID: AA12295836
• ISSN: 00214922
• ISSN: 13474065
• DOI: 10.7567/1347-4065/ab3e58
• HANDLE: 10655/00012533
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/10549
• Web Site: http://iopscience.iop.org/article/10.7567/1347-4065/ab3e58
• Web Site: http://iopscience.iop.org/article/10.7567/1347-4065/ab3e58/pdf
• Web Site: https://iopscience.iop.org/article/10.7567/1347-4065/ab3e58/pdf
• Web Site: https://iopscience.iop.org/article/10.7567/1347-4065/ab3e58
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN