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X-RAY RUNS: Apply for Beamtime

2017  Nov 1 - Dec 21

2018  Feb 7 - Apr 3
2018  Proposal/BTR deadline: 12/1/17

2018  Apr 11 - Jun 4
2018  Proposal/BTR deadline: 2/1/18

 A1      A2      B1      C1      D1      F1      F2      F3      G1      G2      G3    


G1 Beamline Information

G1 Station Summary
Source: 1.5m CHESS Compact Undulator
Energy: 8-13 keV
Detectors: Finger Lakes CCD
    The G1 station is used for general high-flux small and wide angle monochromatic x-ray scattering that is tolerant of 1.5% energy bandwidth. Current upgrades include:
  • online* size-exclusion chromatography (SEC-SAXS) for separating protein mixtures
  • disposable low-scattering plastic microfluidic cells for SEC-SAXS and high-throughput SAXS
  • online* multi-angle and dynamic light scattering (MALS & DLS)
  • renovation of beamline control area (new furniture and partitions) to improve utilization of space and accommodate larger user groups
  • organic solvent compatible temperature control SAXS cell
  • GISAXS/GIWAXS custom-built furnace

* “online” refers to simultaneous or in situ data collection using x-rays in combination with other complementary methods. Terms like “SEC-SAXS” are also referred to as hyphenated methods.

    R&D activities:
  • Combining inline size exclusion SAXS data with dynamic and static light scattering
  • Cryogenic SAXS to prolong sample lifetime and trap intermediates
  • Microfluidic dialysis of biological samples in situ on the beamline [1]
  • Time-resolved BioSAXS

Size exclusion chromatograph (left) connected inline with BioSAXS sample cell (right) on G1 beamline. Direct connection allows unstable samples to be purified and analyzed rapidly before they aggregate.

[1] M. Skou, S. Skou, T.G. Jensen, B. Vestergaard, R.E. Gillilan, Journal of Applied Crystallography 47, 1355-1366 (2014).