Beam line 2-3 is a bending magnet side station dedicated to x-ray imaging and micro x-ray absorption spectroscopy (edge, EXAFS) as well as micro diffraction of biological, material, and geological samples. A Kirkpatrick-Baez mirrors system is used to achieve microfocus with a beam size of ~ 2 x 2 microns. The energy range of the beam line optics covers 4.9-23 keV, with detection of fluorescent x-rays as low as Si. BL2-3 is equipped with a Vortex silicon drift detector and ionization chambers. Sample positions are controlled with submicron accuracy by two different sample stages depending on the experiment. BL2-3 is ideal for obtaining elemental maps of small samples (about 10 microns to 25 mm) as well as performing spectroscopy on selected points in the sample (~ 2 x 2 microns).
Status | Open |
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Supported Techniques | X-ray absorption spectroscopy imaging |
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Main Scientific Disciplines | Bioscience Environmental Sciences Materials Sciences |
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Beam Line Specifications | |||||||||||
Source1.3 Tesla Bend Magnet, 0.75 mrad acceptance
OpticsKirkpatrick-Baez System (microfocus) Monochromator: water cooled, double crystal, Si(111), Si(220), Si(400). Monochromator Crystal Glitch Library Crystal changes need to be scheduled and coordinated in advance with BL support staff. Absorption584 microns Be, 10.7 meters He, 15.2 microns C |
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Instrumentation | Detectors: ionization chambers, Vortex Silicon Drift Detector, CCD detector for µXRD Sample Positioning: Newport Micro sample positioner, SmarAct Piezo positioner for tomographysample positioner |
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Sample Environment | Ambient temperature and pressure Sample size: flexible, ~24 X 24 mm in one image, also accommodates larger samples |
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Data Acquisition and Analysis | Microscan GUI, MicroXAS, XMap Gui, SMAK (Microtoolkit), SixPAK. |
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Beam Line Phone | 650-926-5223. On-site Users: Contact the Duty Operator at 9-926-4040 |
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Beam Line Contact |