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Beamline 12-BM-B: Multipurpose X-ray absorption and scattering beamline


Materials Science, Polymer Science, Chemistry, Physics, Environmental Science

Description

12-BM is a bending magnet beamline dedicated to spectroscopy, SAXS, and scattering experiments. The beamline uses a water-cooled, double-crystal, fixed-exit monochromator with Si(111)/Si(311) crystals capable of operations between 4.5 and 30keV. A double mirror system (flat plus torroidal) with a cutoff energy of 23 keV focuses the beam in the experimental station to 0.5 mm x 1.0 mm. Unfocused beam can be used for higher energies. The end station is equipped with a 13-element Ge detector, two area detector (MX225 and marccd 165), and a 6-circle Huber diffractometer. Supported techniques include XAFS, XANES, SAXS, scattering and diffraction.

 

Supported Techniques

  • X-ray absorption fine structure
  • General diffraction
  • X-ray reflectivity
  • Fluorescence spectroscopy
  • Small-angle x-ray scattering
  • Wide-angle x-ray scattering

Beamline Controls and Data Acquisition

Linux workstation running EPICS with VME and SPEC software, Windows running EPICS applications

Detectors

  • Ionization chambers
  • Cyberstar Scintillation Detector
  • Canberra 13-element Ge
  • MX225 (6144x6144 pixels)
  • MarCCD 165 (2048x2048 pixels)
  • Pilatus 100K (detector pool)
  • Vortex-ME4 (detector pool)

Additional Equipment

  • Spectroscopy table
  • 6-circle Huber goniometer
  • Ventilated Hutch, no HEPA filter
  • 3D Printed Sample Mounts

Local Contacts

Name SUNGSIK LEE
Phone 630.252.7491
Name BENJAMIN REINHART
Phone 630.252.7128

Beamline Specs

Source

Bending Magnet

Monochromator Type

Si(111)

Energy Range

4.5-23 keV

Resolution (ΔE/E)

1.4 x 10 -4

Flux (photons/sec)

2 x 1011 @12 keV

Beam Size (HxV)

Focused

500µm x 1000µm

Monochromator Type

Si(311)

Energy Range

10-30 keV

Resolution (ΔE/E)

2 x 10 -5

Flux (photons/sec)

5 x 1010 @12 keV

Beam Size (HxV)

Unfocused

10mm x 2mm

For additional information see:
https://www1.aps.anl.gov/Sector-12/12-BM

Current Status:

Operational/Accepting General Users

Access Mode:

On-site