Experimental Station 7-2

Beam line 7-2  is a wiggler end station dedicated for x-ray absorption spectroscopy large scale rapid imaging. (After many years of service, the materials science scattering capability was moved from BL7-2 to BL17-2 which is currently in development/commissioning)

Supported Techniques
X-ray absorption spectroscopy imaging
Main Scientific Disciplines
Environmental Sciences
Materials Sciences
Beam Line Specifications


20-pole, 2-Tesla wiggler, 0.5 mrad acceptance

Energy Range Resolution ΔE/E Spot Size Flux
5000-16,200 eV 1x10-4 50 and 100 micron 1 x 10



Capillary optics, Si(111)

M0 mirror: vertical focusing, flat bent, 0.6 m, Si, Rh-coated

Monochromator: LN2-cooled Si(111), ϕ = 0o, double-crystal Sagittal focusing


546 μm Be, 15 μm C


Detectors: ionization chambers, 4-element Vortex Silicon Drift Detector, CCD detector for µXRD

Sample Positioning: Newport sample positioner

Cryocooler (60-300K), or Displex (20-300K), or Anton Paar (to 700C) heated stage may be scheduled.

Other: Shutter and variable filters to protect detectors and alleviate sample beam damage. 

Sample Environment

Ambient temperature and pressure, N2 atmosphere

Sample temperature: see above

Vacuum Chuck for reflection geometry samples

Anton-Parr Heater

Sample size: up to 30 cm x 1 m

Data Acquisition and Analysis
Beam Line Phone
650-926-5272. On-site Users: Contact the Duty Operator at 9-926-4040
Beam Line Contact

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