Experimental Station 10-2a

Beam line 10-2 is a wiggler end-station that splits time between the front hutch (BL10-2a), which is instrumented for x-ray absorption spectroscopy imaging, and the rear hutch (BL10-2b), which has a dedicated 6-circle diffractometer that is used for materials scattering.  The front hutch utilizes a polycapillary focusing optic to provide a beam spot as small as ~10 microns up to 200 microns.   Samples as large as 300 x 600 mm can be measured in one image, but larger samples can also be accommodated.  In addition, BL10-2 can be set up for confocal x-ray fluorescence using two polycapillary focusing optics to obtain information from different depths in a sample.

Status
Open
Supported Techniques
X-ray Absorption Spectroscopy
X-ray absorption spectroscopy imaging
Main Scientific Disciplines
Bioscience
Environmental Sciences
Materials Sciences
Beam Line Specifications

Source

33-pole, 1.27-Tesla wiggler, 1.5 mrad acceptance

  Energy Range Resolution ΔE/E Spot Size Flux
Focused 4500-30000 eV 1 x 10-4 0.2 x 0.43 mm2 N/A
Unfocused 4500-45000 eV 1 x 10-4 2.0 x 20.0 mm2 N/A

 

Optics

Polycapillary focusing system (can be set up in confocal mode)

Monochromator: LN2 cooled, Si(111) ϕ = 90o, Si(220) ϕ = 90o, upward reflecting, double crystal

Monochromator Crystal Glitch Library 

Crystal changes need to be scheduled and coordinated in advance with BL support staff

Absorption

508 micron Be, 4.4 m He, 205 micron graphite (fixed), 1016 micron graphite (insertable, user controlled)

Instrumentation

Detectors: Ionization chambers, Vortex detector (can be fitted for confocal)

Sample Positioning: Newport sample positioner

 

Sample Environment

Ambient temperature and pressure

Sample size: flexible, can measure ~300 X 600 mm in one image

Data Acquisition and Analysis

Microscan GUI, MicroXAS, SMAK (Microtoolkit), SixPAK.

Useful links:

BL10-2 Wiki

X-ray Wiki

Beam Line Phone
650-926-5102. On-site Users: Contact the Duty Operator at 9-926-4040
Beam Line Contact

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