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Purpose <p>The 4W1B beamline at the Beijing Synchrotron Radiation Facility (BSRF) has undergone significant upgrades to enhance its capabilities in X-ray fluorescence (XRF) mapping and X-ray emission spectroscopy (XES), addressing the thermal load challenges induced by the increased beam current (900&#xa0;mA) and meeting the demand for high-precision light-element analysis.</p> Methods <p>Key modifications have been implemented: the original 500-μm-thick diamond window upstream of the focusing mirror is replaced with a 200-μm-thick graphene window, and an additional 200-μm-thick graphene-like window is installed in the front-end section.</p> Results <p>The present paper focuses on the comprehensive improvements of the beamline, covering the above window structure upgrades, enhancement of beamline performance, development of XRF mapping fly-scan functionality, advanced data processing tools, and high-resolution XES methodologies.</p> Conclusion <p>This beamline primarily provides core support services for users engaged in fields including geological minerals, biomedicine, environmental science, materials science, catalytic materials, mineral materials, humanities and archaeology, condensed matter physics, and public security.</p>

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Enhanced capabilities in XRF mapping and XES methods at the upgraded 4W1B beamline

  • 期刊论文

  • 发表日期：

    2026年4月19日

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  • Shuoxue Jin,
  • Hongxin Xie,
  • Zhiying Guo,
  • Yujun Zhang,
  • Chun Li,
  • Quanjie Jia,
  • Dongliang Chen

摘要

Purpose

The 4W1B beamline at the Beijing Synchrotron Radiation Facility (BSRF) has undergone significant upgrades to enhance its capabilities in X-ray fluorescence (XRF) mapping and X-ray emission spectroscopy (XES), addressing the thermal load challenges induced by the increased beam current (900 mA) and meeting the demand for high-precision light-element analysis.

Methods

Key modifications have been implemented: the original 500-μm-thick diamond window upstream of the focusing mirror is replaced with a 200-μm-thick graphene window, and an additional 200-μm-thick graphene-like window is installed in the front-end section.

Results

The present paper focuses on the comprehensive improvements of the beamline, covering the above window structure upgrades, enhancement of beamline performance, development of XRF mapping fly-scan functionality, advanced data processing tools, and high-resolution XES methodologies.

Conclusion

This beamline primarily provides core support services for users engaged in fields including geological minerals, biomedicine, environmental science, materials science, catalytic materials, mineral materials, humanities and archaeology, condensed matter physics, and public security.