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Background <p>Synchrotron X-ray imaging has become indispensable for multidisciplinary research. Over decades of operation, beamline 4W1A at the Beijing Synchrotron Radiation Facility (BSRF) has supported a wide range of research fields and developed a variety of experimental methods.</p> Objectives <p>This paper presents the advancements and upgrades achieved in recent years at beamline 4W1A, focusing on experimental methodologies, technical innovations, and enhanced intelligent data processing capabilities. These include implementing a pink beam mode and a micro-resolution spectroscopic imaging system, developing advanced techniques (flying‑scan, mirrored diffraction enhanced imaging, scanning absorption grid imaging), and integrating machine learning algorithms.</p> Results <p>These technological improvements have enabled beamline 4W1A to evolve from conventional structural imaging toward quantitative, multi‑contrast, and functional imaging, significantly broadening its applicability in energy, materials science, biomedical research, and environmental science. This paper offers a systematic overview of these methodological developments and their user‑driven scientific outcomes. Following the BEPCII upgrade by the end of 2024, the beamline will operate in full‑year parasitic mode and be fully available to external users.</p>

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Recent upgrades and progress at beamline 4W1A of the Beijing synchrotron radiation facility

  • 期刊论文

  • 发表日期：

    2026年6月19日

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  • Jin Zhang,
  • Shanfeng Wang,
  • Yan Wang,
  • Kai Zhang,
  • WanXia Huang,
  • Qingxi Yuan

摘要

Background

Synchrotron X-ray imaging has become indispensable for multidisciplinary research. Over decades of operation, beamline 4W1A at the Beijing Synchrotron Radiation Facility (BSRF) has supported a wide range of research fields and developed a variety of experimental methods.

Objectives

This paper presents the advancements and upgrades achieved in recent years at beamline 4W1A, focusing on experimental methodologies, technical innovations, and enhanced intelligent data processing capabilities. These include implementing a pink beam mode and a micro-resolution spectroscopic imaging system, developing advanced techniques (flying‑scan, mirrored diffraction enhanced imaging, scanning absorption grid imaging), and integrating machine learning algorithms.

Results

These technological improvements have enabled beamline 4W1A to evolve from conventional structural imaging toward quantitative, multi‑contrast, and functional imaging, significantly broadening its applicability in energy, materials science, biomedical research, and environmental science. This paper offers a systematic overview of these methodological developments and their user‑driven scientific outcomes. Following the BEPCII upgrade by the end of 2024, the beamline will operate in full‑year parasitic mode and be fully available to external users.