XALOC - BL13
Macromolecular Crystallography beamline
XALOC aims to provide the present and future Structural Biology groups with a flexible and reliable tool to help in solving structures of macromolecules and complexes. The beamline shall cope with a broad variety of crystal sizes, and will allow both wavelength dependent and independent experiments.
Status
The beamline is under construction
The process of building the beamline is shown here.
Beamline infrastructure has been mostly installed in first half 2009. The main optical elements, namely the Si(111) monochromator and the Horizontal and Vertical Focusing Mirrors (HFM and VFM), were set up in June 2009. Slits and XBPMs in the Optical Hutch were installed in October 2009. Last remaining elements (Photon Shutter, Fluo screens and White beam Attenuator) will be installed between May and fall 2010.
The end-station is currently in the procurement and installation phases. The detector has been awarded.
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Status of XALOC 18 March 2010 (view of the inside of the Experimental Hutch) The End Station starts installation. The diffractometer (white) is in place on its positioning table (blue). On the right it is shown the automatic sample changer (yellow).
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Staff
Jordi Juanhuix & Jordi Benach: Beamline Scientists
Carles Colldelram and Claude Ruget : Mechanical Engineers
Roger Martín : Mechanical Engineer (End-Station)
Julio Lidón : Electronics Engineer
Guifré Cuní: Control Engineer
Alejandro Enrique: Beamline Technician
Beamline characteristics
| Photon Energy (Wavelength) range | 5-21 keV (2.4-0.6 A) |
| Flux at sample | >2 1012 photons/s in 0.1x0.1 mm2 |
| Energy resolution (DE/E) |
2 10-4 |
| Beam size at sample | Adjustable 50-200 (H) x 10-100 (V) μm2 |
| Beam divergence at sample | <0.5 x 0.1 mrad2 |
The beam size will be fitted to the crystal dimensions by (a) adjusting the focus of the mirrors along the beam path, and (b) having two operation modes of the beamline: vertically focused and vertically unfocused.
Technical Description
Documentation
- Original Proposal of the beamline (2005)
- Conceptual Design (2006)
- Minutes 1a Reunión de Usuarios de Líneas de Luz de Cristalografía Macromolecular de España (22 Octubre 2007)
- Poster XALOC in 4th Annual Meeting BioXHit (16-18 April 2008)
- Poster XALOC in Spanish Synchrotron Users Meeting (AUSE4, 15-18 September 2009)
