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Beamline 11-BM is a dedicated high-resolution powder diffractometer at the APS. It offers high resolution powder diffraction data (< 1.2 x 10-4 Δd/d) over moderate time scales (10 minutes – 1 hour). Beamline 11-BM offers both on-site and mail-in modes of access. On-site experiments allow for a wide variety of sample environments, including variable temperature (5 K – 1800 C), electrochemical cells, and gas flow and loading.

Beamline 11-BM: High Resolution Powder Diffractometer

Currently 11-BM is down for the APS Upgrade. Reach out to us in the fall when we expect to be in operations again! We are updating our mail-in system and some links many not be functional currently. If you have any questions or data requests, please contact beamline staff directly.

Beamline 11-BM is a dedicated powder diffraction instrument at the APS. It offers the highest resolution powder diffraction data available in the Americas. Learn how powder diffraction could be be used in your research.

Proposals for both on-site experiments or mail-in access are accepted. New users, or those with a limited number of samples, should consider 11-BM's unique rapid-access mail-in program.

11-BM combines the brilliance of an APS bending magnet source with the efficiency of a sagittally focused double-crystal Si monochromator to achieve world-class sensitivity and resolution.

The diffractometer uses multiple single-crystal analyzer detectors to simultaneously offer high-speed (≤ 1 hr) and high-resolution (< 1.2 x 10-4 ΔQ/Q) data collection.

Learn more about the 11-BM user program and access for industrial users, explore the instrument's design and performance, and read about science performed at the beamline.

The APS operates dedicated powder diffraction beamlines. Find more information on the Structural Science group website.

See the 11-BM User Wiki page for the most recent 11-BM notes and detailed user information.