Experimental Station 2-2

Beam line 2-2 is a bending magnet end-station beam line dedicated to in-situ X-ray absorption spectroscopy, Quick-EXAFS, and EXAFS measurements of samples with absorption edges of 4.5 - 24 keV. BL2-2 is equipped with a water-cooled double crystal monochromator, with multiple crystal sets available [Si(111), Si(220)]. Available detectors at BL2-2 are currently limited to ionization chambers, Lytle, 13-element Ge array, and Vortex detectors. 

Status
Open
Supported Techniques
X-ray Absorption Spectroscopy
Instrument Development
Main Scientific Disciplines
Bioscience
Catalysis
Energy Science
Materials Sciences
Beam Line Specifications

Source

Bend Magnet, End Station, 0.4 mrad acceptance

  Energy Range Resolution ΔE/E Spot Size Flux
Unfocused 5000 to 37000 eV N/A 3.0 x 15.0 mm2 N/A

 

Optics

Monochromator: water cooled, double-crystal, non-fixed exit slit, multiple crystals sets available.

Absorption

673 microns Be, 12.4 meters He, 15.2 microns C

Instrumentation

Detectors: ionization chambers, and Lytle.

Cryostat: Oxford LHe cryostat, LN2 cryostat

Future: Flammables gas cabinet with mass flow controllers to enable gas handling and mixing of toxic and flammable gas for use in catalytic applications.

Sample Environment

Ambient pressure and likely a variety of in-situ flow cells with gas handling and mixing capabilities.

Data Acquisition and Analysis

XASSERV, EXAFSPAK, SixPAK

Beam Line Phone
650-926-5222 . On-site Users: Contact the Duty Operator at 9-926-4040
Beam Line Contact
Beam Line Engineering Notes

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