Biological Small-Angle Neutron Scattering Instrument (Bio-SANS)

Wavelength: 6 < λ < 25 Å
Wavelength resolution: Δλ ⁄ λ = 12– 45%
Q range: 0.001 – 1 Å-1
Sample-to-detector distance: 1 – 15 m
Detector: 2-D 3He
Detector size: 1 × 1 m²
Detector resolution: 5.1 × 5.1 mm² pixels
Max count rate: 25 kHz

Bio-SANS was designed and optimized for analysis of the structure, function, and dynamics of complex biological systems. Bio-SANS is the cornerstone of the Center for Structural Molecular Biology (CSMB) at Oak Ridge National Laboratory. The Bio-SANS instrument is supported by additional CSMB capabilities that include development of advanced computational tools for neutron analysis and modeling, as well as biophysical characterization and X-ray scattering infrastructure. A dedicated biological sample preparation laboratory is located adjacent to the instrument.

Detector tanks for the new SANS instruments at HFIR. The Bio-SANS detector is on the right.

Detector tanks for the new SANS instruments at HFIR. The Bio-SANS detector is on the left.

Applications

Bio-macromolecules and their assemblies

  • Protein complexes
  • Protein/DNA complexes
  • Lipids
  • Viruses
  • Carbohydrates

Hierarchical biological structures

  • Gels
  • Fibers and fibrils
  • Vesicles
  • Microemulsions

Membrane diffraction

Biomimetic and bio-inspired systems

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