Beamlines

About 5-ID SRX Beamline

The SRX beamline enables x-ray fluorescence microscopy with submicron spatial resolution with an incident x-ray beam energy of 4.5-20 keV.

The x-rays are focused onto the sample by a pair of Kirkpatrick-Baez mirrors. High-resolution x-ray fluorescence (XRF) mapping can be performed in addition to x-ray absorption near edge structure (XANES) spectroscopy.

XANES can be performed in fluorescence or transmission mode. Future developments include additional imaging capabilities such as x-ray fluorescence tomography.

About 4-BM XFM Beamline

XFM is a versatile and multimodal x-ray fluorescence microscope designed for the characterization of elemental abundances and chemical speciation in heterogeneous materials. XFM is an imaging beamline designed for spatially-resolved spectroscopy (XANES + EXAFS) in the 2.3-23 keV energy range (optimized 4-20 keV), and capable of microdiffraction (XRD) in transmission geometry, which also offers a polychromatic "pink-beam" mode ideal for rapid 2D and 3D fluorescence imaging and tomography.

XFM uses a Canberra SXD 7-element SDD with Quantum Detectors Xspress3 electronics for XRF contrast and a Perkin Elmer 1621 XRD area detector for diffraction contrast. XFM employs compound focusing to achieve a tunable spot size (5 to 10 microns) while maintaining a long working distance for physically large samples and custom in situ environmental cells.

About 8-BM TES Beamline

The TES beamline is a tender x-ray microspectroscopy beamline with an energy range of 2-5.5 keV (1-8 keV as designed) using Si(111) double crystal monochromator (DCM). The x-rays are focused onto the sample by a pair of Kirkpatrick-Baez mirrors. The beam size is 5-20 um tunable. Spatial-resolution x-ray fluorescence (XRF) mapping and x-ray absorption fine structure (XAFS) spectroscopy can be performed.

For XAFS, the beamline offers fluorescence mode, using an ultra-low energy germanium detector, while a Si drift detector is also available. In addition, the beamline also offers total electron yield mode. Unfocused mode is also available (beam size: ~2.5 mm). Energy down to 1.6 keV and up to 8 keV is under commissioning.