BL11-NCD
Non Crystalline Diffraction beamline
NCD experiments, both at low and high angles named as SAXS and WAXS respectively, are useful to a variety of scientific disciplines as they provide simultaneously structural and functional information at the molecular level. The specific aim is to study semi-ordered systems, long-range structures, diffuse systems, solution and bulk scattering. The experiments require high photon flux and small focal spot. Because of it the beamline is using an in-vacuum undulator as a photon source in order to take full advantage of the high natural collimation of the beam emitted by ALBA.
Figure: Rat tail tendon collagen pattern collected at NCD, October 2012
Status
The optical system was defined in May 2006. Reception and subsequent assembly of the beamline components will start summer 2008. Installation of is now completed and the beamline started to receive external users in July 2012.
Staff
Miguel Ángel García Aranda: Acting beamline responsible
Christina Kamma-Lorger: Beamline scientist
Juan Carlos Martínez Guil: Beamline scientist
Edmundo Fraga: Mechanical engineer
Guifré Cuni: Controls engineer
Gabriel Jover: Controls engineer
Josep Nicolás Román: Optics and Metrology
Beamline characteristics
| Wavelength range |
0.9 - 1.9 Å (or 6.5 -13 keV) |
| Flux at sample | >2 1012 ph/s 1.24 Å for a beam current of 400 mA |
| Bandpass (ΔE/E) |
< 10-3 |
| Beam size at sample | Variable between ~65 - 1200 μm horizontally ~30 - 265 μm vertically |
| Beam divergence at sample | <0.5x0.1 mrad2 |
Technical Descriptions
- Source
- Optics
- Detectors
- NCD End Station
- Micro-focus Option
- Calibration
Installations
- Lead hutches
- Mechanical, Electrical and PSS services
- Triggering Unit
- Mirror Systems
- Double Crystal Monochromator
- Cryo-cooler system
Beam Line Layout
Below is shown a schematic layout of the beamline. The position of the optical elements, beam conditioning and diagnostic components are indicated.
