
Beamline 7.2W
Macromolecular Crystallography
Proposal Submission to Beamline
~17 min per scan
~51 min per sample (for 3 scans)
Standard transmission mode
XANES measurements
Technique / Mode
Estimated Scan Time
Standard transmission mode
EXAFS measurements
~18 min per scan
~72 min per sample (for 4 scans)
Fluorescence mode
XANES measurements
~24 min per scan
~96 min per sample (for 4 scans)
Fluorescence mode
EXAFS measurements
~23 min per scan
~92 min per sample (for 4 scans)
On-The-Fly transmission mode
XANES measurements
2eV/sec; ~4.30 min per scan
~14 min per sample (for 3 scans)
On-The-Fly transmission mode
EXAFS measurements
10eV/sec; ~2.15 min per scan
~9 min per sample (for 4 scans)
Bulk XRF
5 min per scan
~72 min per sample (for 4 scans)
Micro-XRF
Mapping area: 1 × 1 mm² (H × V)
Beam step size: 30 µm
For material samples:
-
Exposure time per step: 5 sec
-
Estimated scan time: ~100 min per sample
For biological samples:
-
Exposure time per step: 20–30 sec
-
Estimated scan time: ~6.5–9 hr per sample
Micro-XAS
~24 min per scan
~96 min per sample (for 4 scans)
GIWAXS
Collect 1 image in 300 sec
MX
Collect 360 oscillations scans in 120 min
GIXAS
~24 min per scan
~96 min per sample (for 4 scans)
WAXS
Collect 1 image in 60-120 sec
TXRF
Concentration 0.2-1.2 ppm or 1-6 pg
Exposure time: 100 sec
~300 sec per sample (for 3 scans)
👉For the external instrument that users will bring and install for their beamtime (Please discuss with beamline staff).
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Estimate Your Beamline Shifts
This table provides estimated scan times for different techniques to help you plan the number of shifts required for your experiment. The times shown are approximate per scan or per sample.