D2AM is a beamline dedicated to structural investigations using anomalous scattering in materials science, with two instruments: a Kappa diffractometer and a small angle scattering camera.
Status:  open


  • Physics
  • Chemistry
  • Materials and Engineering
  • Environmental Sciences
  • Cultural Heritage
  • Earth and Planetary Sciences


  • Material sciences
  • Semi-conductors
  • Nanostructures
  • Metallurgy
  • Soft matter (polymers)


  • XRD - X-ray diffraction
  • MAD - multi-wavelength anomalous dispersion
  • GID - grazing incidence diffraction
  • DAFS - diffraction anomalous fine structure
  • SAXS - small-angle X-ray scattering
  • USAXS - ultra-small-angle X-ray scattering
  • WAXS - wide-angle X-ray scattering
  • GISAXS - grazing incidence small-angle scattering

Energy range

  • 5.0 - 40.0  keV

Beam size

  • Minimum (H x V) : 50.0 x 50.0  µm²
  • Maximum (H x V) : 2.0 x 0.5  mm²

Sample environments

  • Furnace
  • Cryostat (10K)
  • xyz motorized sample holder
  • rxry, txtytz motorized sample holder (in 2012)


  • photomultipliers
  • 2D CCD (Princeton)
  • 2D pixel detector (XPAD)
  • 1D gas detector (Vantec)

Technical details

An upgrade program is taking place on the French CRG D2AM (BM02) to improve its capabilities in anomalous materials studies. Thus the beamline will be closed to users March-June 2011 for extension of the experimental hutch (adding 3 m). The new hutch will accommodate a new 6-circle diffractometer in kappa geometry from Newport (foreseen for April 2012) and an enlarged SAXS table. A new monochromator, designed for spectroscopy, is also under construction and will be installed on the beamline during the long ESRF winter 2011 shutdown. The program will be completed by new mirrors.

[1] Ferrer J.L., Simon J.P., Bérar J.F., Caillot B., Fanchon E., Kaikati O., Arnaud S., Guidotti M., Pirocchi M., Roth M., "D2AM, a beamline with a high-intensity point-focusing fixed-exit monochromator for multiwavelength anomalous diffraction experiments", J. Sync. Rad. 5 (1998) 1346-1356. [2] Bérar J.F., Boudet N., Breugnon P., Caillot B., Chantepie B., Clemens J.C., Delpierre P., Dinkespiler B., Godiot S, Meessen Ch., Menouni M., Morel C., Pangaud P., Vigeolas E., Hustache S., Medjoubi K., "XPAD3 hybrid pixel detector applications", Nucl. Instr. and Meth. A 607 (2009) 233-235.