13 BM-C Beamline

Supported Techniques

  • Surface Diffraction
  • High Pressure Diamond Anvil Cell
  • Single Crystal Diffraction
  • In Situ Powder Diffraction

Major Beamline Components

  • Monochromator
  • One-Meter Long Rhodium-Coated Silicon Vertical Mirror
  • Newport Kappa Six-Circle General Purpose Diffractometer


  • Vortex Single-Element and 4-Element SDD Detectors
  • Dectris Pilatus 100K Pixel Array Detector
  • Dectris Pilatus3 1M Pixel Array Detector

Additional Equipment

  • Environmental cells for surface scattering that support in situ mineral-water interface chemistry, interfacial redox chemistry, electrochemistry, and radioactive samples.
  • Access to GSECARS laboratories including microscopy instrumentation, wet lab, fume hood, laminar-flow hood, glove box, and sample prep areas

Experiments in the 13 BM-C station.

  • Surface diffraction : 15 keV. Collects entire 1.5 mrad fan focused on sample with monochromator.
  • In situ powder diffraction : 15 or 29 keV.  Time-resolved powder diffraction collected while manipulating chemistry, heating, electrochemistry, etc.
  • Diamond anvil cell diffraction and imaging : 29 keV. Can use either entire 1.5 mrad fan and focused on sample, or smaller horizontal beam focused by KB mirror in hutch.
  • Partnership for Extreme Crystallography (PX^2) at 13 BMC. Click for more info

Beamline Optics

The bending magnet fan is divided into two parts.   An outboard fan of 2.5 mrad feeds the 13-BM-D station, and an inboard fan of 1.5 mrad feeds the 13-BM-C station.   These fans are separated  by 1 mrad. The extreme inside and outside 0.5 mrad on each edge of the 6 mrad fan is not used.

The 13-BM-C beamline has a focusing Si <111> and Si<311> single-crystal side-bounce monochromator.  It operates at a fixed angle where the <111> is 15 keV and the <311> is 29 keV.  There is a 1 m long vertical focusing mirror in the 13-BM-B optics station.  This mirror is used for some experiments and removed for others.  There are small K/B mirrors that are placed on the experimental table in 13-BM-C.

BM-C Contacts


Peter Eng

Beamline Scientist
Interface / Surface Studies and Powder Diffraction
(630) 252-0424

Joanne Stubbs

Beamline Scientist
Interface / Surface Studies and Powder Diffraction
(630) 252-0427

Vitali Prakapenka

Beamline Scientist
High Pressure / High Temperature Diamond Anvil Cell (DAC)
(630) 252-0439

Dongzhou Zhang

Beamline Scientist