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The neutron imaging program at the Oak Ridge National Laboratory comprises capabilities at both the Spallation Neutron Source and the High Flux Isotope Reactor. Currently under commissioning, VENUS is a time-of-flight neutron imaging beamline optimized to provide unique contrast capabilities with two techniques, Bragg edge and resonance imaging. Bragg edge radiography measures transmitted neutrons through crystalline materials. Resonance imaging is based on the absorption of neutrons with energies above 0.5 eV by nuclei in the sample. VENUS is designed to allow efficient and automated change from one capability to another. Started in October 2018 and completed in August 2024, the construction project focused on the design, procurement, testing, and installation of the beamline equipment. During the project, the beamline “cold” commissioning (without neutrons) consisted of integrating equipment controls into a user-friendly interface. The “hot” commissioning with neutrons started in September 2024 and is a continuation of the integration of equipment controls such as debugging the user interface and integrating detectors. A few experiments were performed to demonstrate the core capabilities of the instrument. This manuscript shows a general layout of the beamline, its key capabilities and equipment, and initial commissioning experiments performed at VENUS.

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Early Commissioning Activities at the Spallation Neutron Source VENUS Imaging Beamline

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • Hassina Z. Bilheux,
  • Harley Skorpenske,
  • Kevin Yahne,
  • Greg Guyotte,
  • Matthew Pearson,
  • Matthew J. Frost,
  • Jean C. Bilheux,
  • Shimin Tang,
  • Chen Zhang,
  • Yuxuan Zhang,
  • James Torres,
  • Matthew Balafas

摘要

The neutron imaging program at the Oak Ridge National Laboratory comprises capabilities at both the Spallation Neutron Source and the High Flux Isotope Reactor. Currently under commissioning, VENUS is a time-of-flight neutron imaging beamline optimized to provide unique contrast capabilities with two techniques, Bragg edge and resonance imaging. Bragg edge radiography measures transmitted neutrons through crystalline materials. Resonance imaging is based on the absorption of neutrons with energies above 0.5 eV by nuclei in the sample. VENUS is designed to allow efficient and automated change from one capability to another. Started in October 2018 and completed in August 2024, the construction project focused on the design, procurement, testing, and installation of the beamline equipment. During the project, the beamline “cold” commissioning (without neutrons) consisted of integrating equipment controls into a user-friendly interface. The “hot” commissioning with neutrons started in September 2024 and is a continuation of the integration of equipment controls such as debugging the user interface and integrating detectors. A few experiments were performed to demonstrate the core capabilities of the instrument. This manuscript shows a general layout of the beamline, its key capabilities and equipment, and initial commissioning experiments performed at VENUS.