ID09 - White Beam Station - Time-resolved Beamline

Synopsis

Beamline for experiments with a time resolution down to 100 picoseconds. Structural change is initated by short laser pulses and the structural changes are probed by delayed x-ray pulses. Set-up includes unique x-ray optics for making intense white beams.
Status:  open

Disciplines

  • Life Sciences
  • Chemistry
  • Physics
  • Materials and Engineering

Applications

  • Protein dynamics in crystals
  • Time-resolved Laue diffraction with laser-initiated crystals
  • Protein dynamics in solution initiated by flash photolysis
  • Chemical dynamics in solution
  • Small-molecule structures probed in time along with the hydrodynamics of the solvent
  • Surface melting and surface reactions probed by grazing incidence reflectivity, diffraction and scattering

Techniques

  • XRD - X-ray diffraction
  • WAXS - wide-angle X-ray scattering
  • SAXS - small-angle X-ray scattering
  • GID - grazing incidence diffraction
  • Laue diffraction

Energy range

  • 8.5 - 28.0  keV

Beam size

  • Minimum (H x V) : 90.0 x 50.0  µm²
  • Maximum (H x V) : 250.0 x 100.0  µm²

Sample environments

  • 1-circle diffractometer with x, y and z sample position
  • 2-circle cradle available upon request
  • Liquid nitrogen jet for sample cooling (85-320K)
  • Laminar jet for rapid sample exchange

Detectors

  • FReLon CCD detector (2048 x 2048) - pixel size: 50 x 50 um2, detection area: 105 x 105 mm2 (phosphor screen), readout in 0.53 s/image at 16 bits
  • Cyberstar scientilation detector for single-pulse x-ray dianostics
  • GaAs photo detector for single-pulse x-ray and laser dianostics
  • Diamond detector for single-pulse diagnostics
  • PIN diode detectors for intensity measurements
  • Autocorrelator for pulse profile measurements of laser pulses (0.1 ps resolution, range 0-5 ps)

Technical details

ID09 permits time-resolved diffraction for single and poly crystals, as well as Laue diffraction. One unique feature is the intense pink beam from the in-vacuum undulator U17. The U17 is a "single-harmonic" undulator tunable between 15 and 20 keV. The raw undulator spectrum, which is asymmetric in shape, has a bandwidth of 3%. The spectrum can, if needed, be made symmetric with multilayer crystals (1-3% bw). Narrow bandwidths are also avaiable from a conventional channel-cut silicon monochromator (Si111). The chopper system can make 100 picosecond, microsecond or millisecond pulses.

[1] M. Wulff, A. Plech, L. Eybert, R. Randler, F. Schotte, P. Anfinrud, "Realisation of sub-nanosecond pump and probe experiments at the ESRF", Proceedings of the Faraday Discussion 122 (2002) 13-26. [2] M. Cammarata, F. Ewald, L. Eybert, W. Reichenbach, M. Wulff, P. Anfinrud, F. Schotte, Q. Kong, B. Lindenau, J. Rabiger, S. Polachowski, "Chopper system for single pulse experiments with synchrotron radiation", Review of Scientific Instruments, 80 (2009) 015101-015111.

Latest publications

View all publications
Structural photoactivation of a full-length bacterial phytochrome

Björling A., Berntsson O., Lehtivuori H., Takala H., Hughes A.J., Panman M., Hoernke M., Niebling S., Henry L., Henning R., Kosheleva I., Chukharev V., Tkachenko N.V., Menzel A., Newby G., Khakhulin D., Wulff M., Ihalainen J.A., Westenhoff S.,
Science Advances 2, e1600920-1-e1600920-10 (2016)