14 ID Beamline


The 14-ID-B station is an insertion device station with two in-line undulators (U23 and U27). A series of choppers, shutters and mirrors is used to isolate a single 100 ps X-ray pulse and to focus the X-ray beam onto the sample. This produces a high peak power in a short 100 ps burst. In the standard mode of operation, the monochromator is not used and the primary KB mirrors focus the full beam to 20 x 80 um2 (H x V). The secondary KB mirrors reduce the X-ray spot size down even further to 15 x 15 um2 (H x V) but larger beams sizes can easily be generated. If the monochromator is used, 100 ps monochromatic experiments can be performed. This station supports Laue and Time-Resolved Crystallography, and Time-Resolved Solution Scattering. It also supports all standard macromolecular crystallography techniques using the full, unpulsed monochromatic beam.




  • Heat Load Chopper: Reduces heat load on downstream optics by ~99 %.
  • Si (111) double-crystal monochromator: Can be used to produce monochromatic beam. 
  • Primary KB mirror system
  • Julich chopper: Used to isolate single X-ray bunches from the APS in 24 bunch and hybrid modes.
  • Secondary KB mirror system



Beam Characteristics

  • Energy range:
    - 7-20 keV (monochromatic)
    - Polychromatic (pink and white) beam capability
  • Bandpass:
    - ΔE/E: 1.4 x 10-4 (monochromatic)
    - ΔE/E: 5 x 10-2 (polychromatic)
  • Beam size, horizontal x vertical (FWHM):
    - 0.020 x 0.015 mm2
  • Pink beam flux:
    - 3 x 1010 photons/100ps X-ray pulse in APS hybrid mode




  • Sample positioning:
    - ALIO diffractometer with a 1 um sphere of confusion
    - High resolution color sample alignment cameras
    - Automated crystal centering
  • Sample to detector distance:
    - 100 to 800 mm adjustable
  • Sample temperature control:
    - Liquid nitrogen sample cooler
  • Rayonix MX340-HS



Other Equipment/Facilities Available