XRD1 is the X-ray diffraction crystallography beamline at Elettra Synchrotron, a 2.0/2.4-GeV storage ring in Trieste (Italy).
The beamline light source is a multipole wiggler with a photon energy range from 4 to 21 keV. The optics consist in a vertical collimating mirror, a double-crystal Si(111) monochromator followed by a bendable focusing mirror. The multipole wiggler spectrum includes high photon flux at low energies, allowing accurate measurements of anomalous signal of several heavy atoms edges up to 4 KeV (Calcium edge), and offering the enhancement of the Sulphur anomalous signal in native structures. Phasing through Xenon derivatives is routinely done and gas pressurised crystallography experiments are also possible.
The experimental set-up consists in
- Huber goniometer with k-geometry fully controllable from remote
- CCD165 detector (MarResearch) installed on a 2-theta arm
- 2M Pilatus detector (Dectris)
- Cryocooler (700 series Oxford Cryosystems)
- Pressurization cell (Oxford Cryosystem) for gas-derivatives
- Sample changer based on SPINE standard and ESRF pucks type
- The Amptek DP5 silicon drift detector
- Helium purged beam path for soft X-ray phasing
Software programs commonly used for protein crystallography: iMosflm, XDS, CCP4, Phenix, CNS, etc.
More information at: http://www.elettra.trieste.it/elettra-beamlines/xrd1.html
XRD2, the new MX dedicated beamline is currently under construction at Elettra. The light source is a superconducting multipole wiggler and the available spectrum at the sample will spread from 8 to 35 keV. Commissioning will start in 2013.