Beamline 12-ID / BESSRC-CAT

More Information (PDF file)

Scientific focus:

Scientific programs:

Materials science

• elastic and inelastic scattering
• MOCVD
• x-ray standing waves
• electrochemistry

Geoscience

• mineral-liquid interface characterization by x-ray scattering and spectroscopy

Chemistry

• small-angle scattering

Atomic Physics

• spectroscopy

Optics & Optical Performance

BESSRC standard monochromator

• Si(111) crystal
• 3-27 keV energy range
• 35 mm offset
• liquid-nitrogen cooling
• 2nd crystal: Cu braid, liquid-nitrogen cooling
• UHV vacuum compatibility

flat focusing monochromatic mirror

• 40 m from source
• Pt, Pd, and SiO₂ coatings
• 2.5-4 mrad incident angle
• ~100 μm focus in 12-ID-B

Experiment Stations

12-ID-A

• white beam first optics enclosure
• monochromator
• quad photodiode
• monochromator pinhole apertures

12-ID-B

• spectroscopy
• elastic and inelastic scattering
• reflectivity
• small-angle scattering

12-ID-C

• atomic physics
• small-angle scattering (low Q)

12-ID-D

• MOCVD chamber
• surface chamber
• x-ray scattering

Detectors

• ionization chambers
• Bicron
• Lytle detector
• solid-state detectors
• single-element Si and Ge
• Canberra 9-element Ge
• 2-D proportional wire dectector
• gold CCD camera

Beamline Controls and Data Acquisition

12-ID-B

• Linux workstation running EPICS with VME and SPEC software
• Windows NT running EPICS applications
• Macintosh with MacOS software running EPICS applications

12-ID-C

• Linux workstation running EPICS with VME and SPEC software
• Windows NT running EPICS applications
• Macintosh with MacOS software running EPICS applications

12-ID-D

• Linux workstation running EPICS with VME and SPEC software

Beamline Support Equipment/Facilities

12-ID-B

• spectroscopy table
• 8-circle Huber ψ goniometer

12-ID-C

• optics table
• small-angle scattering instrumentation

12-ID-D

• surface chamber
• MOCVD apparatus

Source Characteristics (nominal)