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<p>This article reviews the technological details of a 2-m Schwob-Fraenkel soft X-ray multichannel spectrometer (SOXMOS) which has been installed in the Large Helical Device (LHD) to study impurity behaviors. Experimental setup of the SOXMOS operated in the duo-multichannel detector mode is described together with the peripheral equipment and remote control systems customized for the LHD. The absolute wavelength is carefully calibrated using the positions of reference lines based on the two different fitting methods. The data acquisition and registration are completely automated, and the secondary physical data resulting from the wavelength calibration and the peak detection are also made available for all the LHD users. The SOXMOS data have been widely used for various research topics relevant to impurity transport as well as atomic physics.</p>

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Spectroscopy Using a Schwob-Fraenkel Grazing Incidence Spectrometer

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月20日

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  • Chihiro Suzuki,
  • Hisamichi Funaba,
  • Naoki Tamura

摘要

This article reviews the technological details of a 2-m Schwob-Fraenkel soft X-ray multichannel spectrometer (SOXMOS) which has been installed in the Large Helical Device (LHD) to study impurity behaviors. Experimental setup of the SOXMOS operated in the duo-multichannel detector mode is described together with the peripheral equipment and remote control systems customized for the LHD. The absolute wavelength is carefully calibrated using the positions of reference lines based on the two different fitting methods. The data acquisition and registration are completely automated, and the secondary physical data resulting from the wavelength calibration and the peak detection are also made available for all the LHD users. The SOXMOS data have been widely used for various research topics relevant to impurity transport as well as atomic physics.