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Beamline 11-BM-B: High-resolution/High-throughput Powder Diffractometer

X-ray Science Division, APS
Chemistry, Materials Science, Physics, GeoScience


The 11-BM diffractometer has 12 analyzers and offers simultaneous high-speed (<= 1 hr) and high-resolution (~2 x 10-4 ΔQ/Q) data collection. Users can access the instrument via mail-in access or can submit proposals for on-site use.  

 Mail-in collection is performed with select scan conditions at a fixed energy (typically ~30 keV). Rapid access mail-in users are limited to 8 samples or 8 hours (1 shift).  

 Users may submit a standard (non-rapid access) proposal requesting beamtime for work that cannot be accomplished under the mail-in service.


Supported Techniques

  • Powder diffraction

Beamline Controls and Data Acquisition

EPICS/MEDM, plus Python based GUI interfaces


  • Multiple Scintillators (LaCl3)

Additional Equipment

  • Cryostream (100-450 K)
  • Hot Air Blower (< 950 C)
  • Flowcell/Controlled Atmospheres
  • XYZ Stage for User Supplied Equipment

Local Contacts

Name SAUL LAPIDUS (Powder Diffraction)
Phone 630.252.
Name LYNN W. RIBAUD (Powder Diffraction)
Phone 630.252.6833

Beamline Specs


Bending Magnet

Monochromator Type


Energy Range

25-35 keV

Resolution (ΔE/E)

2 x 10 -4

Flux (photons/sec)

2.5 x 1011 @25 keV

Beam Size (HxV)


500µm x 400µm

For additional information see:

Current Status:

Operational/Accepting General Users

Access Mode:

On-site Mail-in